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Yo Tim...FWIW
The float and float needle *can* be removed from the 'dexter' carburetor without removing the carb.
To order new float needles, I needed the number on the seat. Now there are two on order: http://www.mgcycle.com/index.php?mai...oducts_id=1335 Hopefully that'll solve my carb leaking problem. Oh, the floats are plastic, not brass. No gas in them, so apparently they're not leaking. |
Yo Tim...FWIW
3:20 PMPoco Deplorevole
The float and float needle *can* be removed from the 'dexter' carburetor without removing the carb. To order new float needles, I needed the number on the seat. Now there are two on order: http://www.mgcycle.com/index.php?mai...oducts_id=1335 Hopefully that'll solve my carb leaking problem. Oh, the floats are plastic, not brass. No gas in them, so apparently they're not leaking. ..... I wonder why two different needle sets offered for the same model carbs? Maybe one for higher performance? Can't see that though. Strange... |
Yo Tim...FWIW
On Sat, 29 Apr 2017 18:14:19 -0700 (PDT), Tim wrote:
3:20 PMPoco Deplorevole The float and float needle *can* be removed from the 'dexter' carburetor without removing the carb. To order new float needles, I needed the number on the seat. Now there are two on order: http://www.mgcycle.com/index.php?mai...oducts_id=1335 Hopefully that'll solve my carb leaking problem. Oh, the floats are plastic, not brass. No gas in them, so apparently they're not leaking. .... I wonder why two different needle sets offered for the same model carbs? Maybe one for higher performance? Can't see that though. Strange... That's why I had to take the carb apart to find the damn number. |
Yo Tim...FWIW
Apr 30Poco Deplorevole - show quoted text - That's why I had to take the carb apart to find the damn number. ..... Oh I'm familiar with that. I'm just curious of thy they had two needle applications. I wonder what the difference is between the two numbers... |
Yo Tim...FWIW
On Mon, 1 May 2017 08:15:33 -0700 (PDT), Tim wrote:
Apr 30Poco Deplorevole - show quoted text - That's why I had to take the carb apart to find the damn number. .... Oh I'm familiar with that. I'm just curious of thy they had two needle applications. I wonder what the difference is between the two numbers... Here you go. They had three different sizes for different bikes, even though the carbs were the same 'PHF'. I suppose the LeMans, etc, sucked up gas a bit quicker than Millie. "Dellorto float needle and seat size 250 for PHF and PHM series carburetors. The 250 size is normally used on the mid-valve touring models of 850, 1000, and 1100cc. Guzzi used part number 17939167 for 1000 Convert with PHF carbs, Mille GT, 850 T5, 1000 G5 with PHF carbs, California II with PHF carbs, California III, CX100 with PHF carbs.' Dellorto float needle and seat size 300 for PHF and PHM series carburetors. The 300 size is used on the 850 LeMans, LeMans II, 850 LeMans III, and LeMans 1000, as well as the big valve 1991 1000S, 1100 Sport, big valve California III, California 1100 carbed, Strada 1000, SP III. Guzzi used part number 14939150 as well as 30939110. Dellorto float needle and seat size 200 for PHF, PHBH, and VHBZ. The 200 size was used on the small twins V35, V50, V65 and V75 models when equipped with PHBH carbs, as well as 850T5 first and second series. Guzzi used part number 19934600. Dellorto number 8649200 " |
Yo Tim...FWIW
On Mon, 1 May 2017 08:15:33 -0700 (PDT), Tim wrote:
Apr 30Poco Deplorevole - show quoted text - That's why I had to take the carb apart to find the damn number. .... Oh I'm familiar with that. I'm just curious of thy they had two needle applications. I wonder what the difference is between the two numbers... This is interesting. I've paid that much just for the OEM u-joint. Now some German outfit is making a 'kit' for about the same price. http://www.mgcycle.com/index.php?mai...oducts_id=1931 |
Yo Tim...FWIW
So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked...
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Yo Tim...FWIW
11:42 AMPoco Deplorevole
On Mon, 1 May 2017 08:15:33 -0700 (PDT), Tim wrote: - show quoted text - This is interesting. I've paid that much just for the OEM u-joint. Now some German outfit is making a 'kit' for about the same price. http://www.mgcycle.com/index.php?mai...oducts_id=1931 ..... Now that's the way to go. New couplers means new splines as well. Don't know how many grievances I've read on forums about worn splines on the shafts of high mileage machines. Occasionally low mile bikes as well... |
Yo Tim...FWIW
On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote:
So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. |
Yo Tim...FWIW
12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. ..... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... |
Yo Tim...FWIW
On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote:
12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. |
Yo Tim...FWIW
12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. .... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g |
Yo Tim...FWIW
On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim
wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... It is probably like that Walbro carburetor that shows up in virtually every piece small 2 stroke equipment these days. It is the same casting with dozens of different jet combinations. |
Yo Tim...FWIW
On 5/1/2017 2:15 PM, Tim wrote:
12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? |
Yo Tim...FWIW
On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole
wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) |
Yo Tim...FWIW
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Yo Tim...FWIW
On Mon, 1 May 2017 11:15:23 -0700 (PDT), Tim wrote:
12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Holy ****...$400 for one muffler. Those babies aren't cheap! I wouldn't buy anything from Harpers. Actually, the Jackal has plenty of power anyway. I'll bet you could outrun Harry's Ducati on the straights and in the twisties! |
Yo Tim...FWIW
On Mon, 1 May 2017 14:47:14 -0400, "Mr. Luddite"
wrote: Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. In this case, other than a slightly bigger displacement it was mostly at the cost of low RPM emissions. I didn't run it at low RPM that much anyway ;-) I was working midnights by then so sitting in traffic was not a factor. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. There is a lot of snake oil being sold out there. In the boat business it seems to be their stock and trade. Yamalube? Really? |
Yo Tim...FWIW
On Mon, 1 May 2017 14:27:26 -0400, "Mr. Luddite" wrote:
On 5/1/2017 2:15 PM, Tim wrote: 12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 Here's the K&N installation: http://www.spedizione.nl/wp-content/...-3-2015-41.jpg |
Yo Tim...FWIW
On Mon, 1 May 2017 15:05:05 -0400, Keyser Soze wrote:
I've made no mods to my truck, other than installing a pair of "shock absorber" lifts for the front hood. For reasons I don't understand, Toyota didn't put them on the truck, even though they put them on their car hoods. Maybe they are trying to increase the perceived longevity of the truck since these air springs are a frequent replacement item. I notice my Honda has a stick too. I suppose a pair of real steel springs like we had for 5 decades is too heavy or more likely too expensive. I know IBM fell in love with those air springs in the 70-80s and we used to order them by the case. In regular daily use, they don't last very long at all. Some sizes seem to last longer than others. The long ones on hatch back glass were the worst. |
Yo Tim...FWIW
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Yo Tim...FWIW
On Mon, 1 May 2017 14:47:14 -0400, "Mr. Luddite" wrote:
On 5/1/2017 2:29 PM, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. For the truck I use the Delco filter. Some outfit did a test of various air filters, including K&N, for the Duramax, and the Delco came out on top. Some outfit in Rhode Island, not GM. I've no reason to change the truck filter. Here's some of those test results: http://www.thedieselpageforums.com/t...ad.php?t=11674 Besides, Amazon carries those Delco filters pretty cheap. |
Yo Tim...FWIW
On Mon, 1 May 2017 15:05:05 -0400, Keyser Soze wrote:
On 5/1/17 2:47 PM, Mr. Luddite wrote: On 5/1/2017 2:29 PM, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. One of my buddies with a truck similar to mine installed a K&N air filter and some "name brand" exhaust. All the pair did, he said, was to make the truck louder. I've made no mods to my truck, other than installing a pair of "shock absorber" lifts for the front hood. For reasons I don't understand, Toyota didn't put them on the truck, even though they put them on their car hoods. I've got about 13,000 miles on the truck now, after 13 months, and I'm averaging about 23 MPG for the kind of driving I do around here. I've seen 27 MPG on the interstate if I cruise between 65 and 70. Yeah, but I'll bet you've really souped up that Ducati, no? |
Yo Tim...FWIW
1:27 PMMr. Luddite
- show quoted text - Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? ...... Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new... |
Yo Tim...FWIW
2:17 PMPoco Deplorevole
- show quoted text - I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 ---- That's one thing I liked about my old ambassador. It had a simple paper element in a tin box full of vents. Changing the filter was a snap. That was then and this is now... |
Yo Tim...FWIW
On 5/1/2017 3:05 PM, Keyser Soze wrote:
On 5/1/17 2:47 PM, Mr. Luddite wrote: On 5/1/2017 2:29 PM, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. One of my buddies with a truck similar to mine installed a K&N air filter and some "name brand" exhaust. All the pair did, he said, was to make the truck louder. I've made no mods to my truck, other than installing a pair of "shock absorber" lifts for the front hood. For reasons I don't understand, Toyota didn't put them on the truck, even though they put them on their car hoods. I've got about 13,000 miles on the truck now, after 13 months, and I'm averaging about 23 MPG for the kind of driving I do around here. I've seen 27 MPG on the interstate if I cruise between 65 and 70. Your 27 MPG is slightly below the 2016 CAFE mileage mandate for pickup trucks (28.8 mpg). Better get a tune up. :-) |
Yo Tim...FWIW
On 5/1/17 4:15 PM, Mr. Luddite wrote:
On 5/1/2017 3:05 PM, Keyser Soze wrote: On 5/1/17 2:47 PM, Mr. Luddite wrote: On 5/1/2017 2:29 PM, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. One of my buddies with a truck similar to mine installed a K&N air filter and some "name brand" exhaust. All the pair did, he said, was to make the truck louder. I've made no mods to my truck, other than installing a pair of "shock absorber" lifts for the front hood. For reasons I don't understand, Toyota didn't put them on the truck, even though they put them on their car hoods. I've got about 13,000 miles on the truck now, after 13 months, and I'm averaging about 23 MPG for the kind of driving I do around here. I've seen 27 MPG on the interstate if I cruise between 65 and 70. Your 27 MPG is slightly below the 2016 CAFE mileage mandate for pickup trucks (28.8 mpg). Better get a tune up. :-) I'll keep that in mind when I next visit the local CAFE. :) |
Yo Tim...FWIW
On 5/1/2017 3:17 PM, Poco Deplorevole wrote:
On Mon, 1 May 2017 14:27:26 -0400, "Mr. Luddite" wrote: On 5/1/2017 2:15 PM, Tim wrote: 12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 Here's the K&N installation: http://www.spedizione.nl/wp-content/...-3-2015-41.jpg I never tried a K&N on any of my motorcycles so I have no personal experience. However, I was curious and ran across this explanation in a motorcycle forum. Guy seems to know what he's talking about: "Several years ago a bunch of BMW motorcycle enthusiasts decided to test the claims. They dyno tested several bikes with factory air filters, K&N filters, and NO filter, and made several runs. There was exactly zero measurable power increase. The claims tend to work like this: -Factory air filter produces 1.5" H2O pressure drop. -Wonder filter produces only 0.5" H2O pressure drop. Wonder filter is 300% better!!! This ignores the fact that atmospheric pressure is about 384"H2O. Therefore a 1.5" pressure drop represents, at most, a 0.3% power loss. If the improvement were directly proportional to pressure, then the wonder filter might produce a 0.2% power increase, which is completely buried in the noise of temperature variations and barometric pressure changes. But this is not the case. Mass flow varies as the square root of pressure drop, so that difference in pressure allows only 0.1% more mass flow. The actual difference is even less than that though. Because the filter is only part of the total pressure drop between open atmosphere and the inside of the cylinders. Most of the drop is still going to be getting past the intake valve(s). Tuned intakes can mitigate this over narrow rpm ranges, and this is of course where peak torque is measured, so really sensitive measurements may pick up an improvement in peak torque, but anywere else the pressure loss across the filter is meaningless. |
Yo Tim...FWIW
On 5/1/2017 3:19 PM, Poco Deplorevole wrote:
On Mon, 01 May 2017 14:29:35 -0400, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) Luckily, motorcycles don't have to pass emission inspections. I've not been stopped for noise, although competition pipes are not street legal. They're not as loud as many of the Harleys running around. Harley has been putting a catalytic converter on their bikes since 2010. (2009 in California). They also had them in some models a few years before that as well. No smog inspection on bikes in MA but I think in some states like CA, there is. Actually, MA did away with the tailpipe emission test for all vehicles since 2008 as long as the vehicle has the OBD readout capability. The computer just checks for recorded faults. |
Yo Tim...FWIW
On 5/1/2017 3:52 PM, Tim wrote:
1:27 PMMr. Luddite - show quoted text - Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? ..... Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new... Maybe. But something bothers me about that logic also. The K&N filters are treated with oil and thus can be cleaned and re-used. That's about the only advantage I can see and it would make sense in dirt racing. You wouldn't have to buy a new filter every race. |
Yo Tim...FWIW
On 5/1/17 4:46 PM, Mr. Luddite wrote:
On 5/1/2017 3:52 PM, Tim wrote: 1:27 PMMr. Luddite - show quoted text - Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? ..... Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new... Maybe. But something bothers me about that logic also. The K&N filters are treated with oil and thus can be cleaned and re-used. That's about the only advantage I can see and it would make sense in dirt racing. You wouldn't have to buy a new filter every race. If you are dirt racing in a truck, the $25 an OEM air filter would cost would be among the most minor expenses, and you wouldn't have to mess with cleaning and oiling it. |
Yo Tim...FWIW
On Mon, 1 May 2017 16:21:35 -0400, "Mr. Luddite" wrote:
On 5/1/2017 3:17 PM, Poco Deplorevole wrote: On Mon, 1 May 2017 14:27:26 -0400, "Mr. Luddite" wrote: On 5/1/2017 2:15 PM, Tim wrote: 12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 Here's the K&N installation: http://www.spedizione.nl/wp-content/...-3-2015-41.jpg I never tried a K&N on any of my motorcycles so I have no personal experience. However, I was curious and ran across this explanation in a motorcycle forum. Guy seems to know what he's talking about: "Several years ago a bunch of BMW motorcycle enthusiasts decided to test the claims. They dyno tested several bikes with factory air filters, K&N filters, and NO filter, and made several runs. There was exactly zero measurable power increase. The claims tend to work like this: -Factory air filter produces 1.5" H2O pressure drop. -Wonder filter produces only 0.5" H2O pressure drop. Wonder filter is 300% better!!! This ignores the fact that atmospheric pressure is about 384"H2O. Therefore a 1.5" pressure drop represents, at most, a 0.3% power loss. If the improvement were directly proportional to pressure, then the wonder filter might produce a 0.2% power increase, which is completely buried in the noise of temperature variations and barometric pressure changes. But this is not the case. Mass flow varies as the square root of pressure drop, so that difference in pressure allows only 0.1% more mass flow. The actual difference is even less than that though. Because the filter is only part of the total pressure drop between open atmosphere and the inside of the cylinders. Most of the drop is still going to be getting past the intake valve(s). Tuned intakes can mitigate this over narrow rpm ranges, and this is of course where peak torque is measured, so really sensitive measurements may pick up an improvement in peak torque, but anywere else the pressure loss across the filter is meaningless. My use of K&Ns on the Guzzi is purely convenience...and they're cheap. The two on their now have lasted over 25 years. Can't bitch about that. |
Yo Tim...FWIW
On Mon, 1 May 2017 16:46:57 -0400, "Mr. Luddite" wrote:
On 5/1/2017 3:52 PM, Tim wrote: 1:27 PMMr. Luddite - show quoted text - Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? ..... Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new... Maybe. But something bothers me about that logic also. The K&N filters are treated with oil and thus can be cleaned and re-used. That's about the only advantage I can see and it would make sense in dirt racing. You wouldn't have to buy a new filter every race. That's the big advantage, along with accessibility, on or off the track with Moto Guzzis. |
Yo Tim...FWIW
3:47 PMMr. Luddite
On 5/1/2017 3:52 PM, Tim wrote: 1:27 PMMr. Luddite - show quoted text - Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? ..... Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new... Maybe. But something bothers me about that logic also. The K&N filters are treated with oil and thus can be cleaned and re-used. That's about the only advantage I can see and it would make sense in dirt racing. You wouldn't have to buy a new filter every race. ..... If memory serves correctly, I'd read on a Brit bike forum and someone was discouraging the use of the really small KNs because of their lack of filtration capabilities. But one advantage was they sure looked way cool those Triumphs with those cute little button filters on them...😋 |
Yo Tim...FWIW
On 5/1/2017 5:01 PM, Poco Deplorevole wrote:
On Mon, 1 May 2017 16:21:35 -0400, "Mr. Luddite" wrote: On 5/1/2017 3:17 PM, Poco Deplorevole wrote: On Mon, 1 May 2017 14:27:26 -0400, "Mr. Luddite" wrote: On 5/1/2017 2:15 PM, Tim wrote: 12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 Here's the K&N installation: http://www.spedizione.nl/wp-content/...-3-2015-41.jpg I never tried a K&N on any of my motorcycles so I have no personal experience. However, I was curious and ran across this explanation in a motorcycle forum. Guy seems to know what he's talking about: "Several years ago a bunch of BMW motorcycle enthusiasts decided to test the claims. They dyno tested several bikes with factory air filters, K&N filters, and NO filter, and made several runs. There was exactly zero measurable power increase. The claims tend to work like this: -Factory air filter produces 1.5" H2O pressure drop. -Wonder filter produces only 0.5" H2O pressure drop. Wonder filter is 300% better!!! This ignores the fact that atmospheric pressure is about 384"H2O. Therefore a 1.5" pressure drop represents, at most, a 0.3% power loss. If the improvement were directly proportional to pressure, then the wonder filter might produce a 0.2% power increase, which is completely buried in the noise of temperature variations and barometric pressure changes. But this is not the case. Mass flow varies as the square root of pressure drop, so that difference in pressure allows only 0.1% more mass flow. The actual difference is even less than that though. Because the filter is only part of the total pressure drop between open atmosphere and the inside of the cylinders. Most of the drop is still going to be getting past the intake valve(s). Tuned intakes can mitigate this over narrow rpm ranges, and this is of course where peak torque is measured, so really sensitive measurements may pick up an improvement in peak torque, but anywere else the pressure loss across the filter is meaningless. My use of K&Ns on the Guzzi is purely convenience...and they're cheap. The two on their now have lasted over 25 years. Can't bitch about that. Understand. My problem are the claims that K&N air filters increase horsepower and performance. By themselves, I don't buy it. If you change your 2 barrel Carter for a 4 barrel Holley and add a K&N ... sure. When I was 16 or 17 my first car was a '62 Ford Galaxie. It was fun to take the air cleaner assembly completely off and floor it to hear the roar of the air entering the intake through carb. Car didn't go any faster. It just made more noise. |
Yo Tim...FWIW
4:22 PMMr. Luddite
- show quoted text - Understand. My problem are the claims that K&N air filters increase horsepower and performance. By themselves, I don't buy it. If you change your 2 barrel Carter for a 4 barrel Holley and add a K&N ... sure. When I was 16 or 17 my first car was a '62 Ford Galaxie. It was fun to take the air cleaner assembly completely off and floor it to hear the roar of the air entering the intake through carb. Car didn't go any faster. It just made more noise. ..... Yup. A buddy did that to his dads 70 olds with a 45, only all he did was take the lid off the filter canister.. Problem was he floored it and the engine coughed and died. He knew the old man was going to kill him for blowing it up. But when we raised the hood we were relieved at what actually happened. When he nailed it, that 700cfm "Rotten-Chester quadra-junk" sucked so hard it grabbed a generous amount of the fiber noise insulation attached to the underside of thehood and tried to eat it. It looked like the carb was full of black cotton candy. With a flashlight and needle nose pliers we dug everything out at least the best we could, put it all together , and luckily it started and ran fine.. he parked it. And not a word was said. Kid never did that again... |
Yo Tim...FWIW
On Mon, 1 May 2017 14:37:26 -0700 (PDT), Tim
wrote: 4:22 PMMr. Luddite - show quoted text - Understand. My problem are the claims that K&N air filters increase horsepower and performance. By themselves, I don't buy it. If you change your 2 barrel Carter for a 4 barrel Holley and add a K&N ... sure. When I was 16 or 17 my first car was a '62 Ford Galaxie. It was fun to take the air cleaner assembly completely off and floor it to hear the roar of the air entering the intake through carb. Car didn't go any faster. It just made more noise. .... Yup. A buddy did that to his dads 70 olds with a 45, only all he did was take the lid off the filter canister.. Problem was he floored it and the engine coughed and died. He knew the old man was going to kill him for blowing it up. But when we raised the hood we were relieved at what actually happened. When he nailed it, that 700cfm "Rotten-Chester quadra-junk" sucked so hard it grabbed a generous amount of the fiber noise insulation attached to the underside of thehood and tried to eat it. It looked like the carb was full of black cotton candy. With a flashlight and needle nose pliers we dug everything out at least the best we could, put it all together , and luckily it started and ran fine. he parked it. And not a word was said. Kid never did that again... Once paper filters were on cars, the trick was you cut the sides and "horn" off of the top cover and you got most of the sound, better breathing and it still was filtered/flame arrested. My old 53 Merc 312 had that charming Holly carb with the bowl centered over the venturies. A carb fire would just keep going and going so the flame arresting part was very important. |
Yo Tim...FWIW
Mr. Luddite wrote:
On 5/1/2017 2:29 PM, wrote: On Mon, 01 May 2017 13:45:27 -0400, Poco Deplorevole wrote: On Mon, 1 May 2017 10:16:47 -0700 (PDT), Tim wrote: 12:10 PMPoco Deplorevole On Mon, 1 May 2017 09:51:41 -0700 (PDT), Tim wrote: So delorto evidently used the save carb for different apps, excusing the needle and jetting. That's interesting. Using the same CFM Venturi carburation for the wide of a genre cc engines. I can't see it but it must have worked... When I bought the Mille, it was jetted for the USA. Very soon after buying it, I bought a European jetting kit for both carbs. Also put competition pipes on it at the same time. Turned it into a real screamer. .... I thought of looking up performance stuff for my v11, but I figure it's good enough the way it is. Still comptimplating an MV though... The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. Not really a motorcycle but the same sort of thing happened when I rebuilt the "Vega" motor in my 75 Monza. I got a distributor kit and another cam gear that changed the ignition curve and cam timing, along with a little more compression, a little overbore and a different carb made that a pretty fast Monza. I am sure it would not have passed an emission inspection tho ;-) I can understand how those modifications can make a big difference in performance. Usually though, they are at the expense of something else. But the K&N claims have always bothered me. My truck has the 5.4L engine and came with single exhaust. About 4 years ago I was bored and I had a dual exhaust system put on it just for the hell of it. The guy who did the work assured me that I'd get better performance and fuel economy with the dual exhaust. Bull****. Didn't change a thing. I then replaced the stock air filter with a K&N. Didn't change a thing. Since then, I've replaced the dual exhaust with the original OEM single (was getting tired of the "rumble"). I also tossed the K&N for a stock, OEM replacement. Again, no noticeable difference in fuel economy or performance. Snake oil, methinks. It's all about programming the computer these days although a K&N sucking cooler air will help performance and fuel economy but you will need a pipe for that. And maybe a new throttle body. And maybe a new exhaust... |
Yo Tim...FWIW
On Mon, 1 May 2017 17:22:41 -0400, "Mr. Luddite" wrote:
On 5/1/2017 5:01 PM, Poco Deplorevole wrote: On Mon, 1 May 2017 16:21:35 -0400, "Mr. Luddite" wrote: On 5/1/2017 3:17 PM, Poco Deplorevole wrote: On Mon, 1 May 2017 14:27:26 -0400, "Mr. Luddite" wrote: On 5/1/2017 2:15 PM, Tim wrote: 12:45 PMPoco Deplorevole - show quoted text - The pipes, jetting and K&N air filters made a hell of a difference in the way mine ran. ... Oh yes I'm sure it would. I'm limited in mine to what I can do. Seeing mine is electronic fuel injected, anout the only things available is through Harpers, there's some "performance" mufflers. And also available is a $300.00 computer box, and that's about it.. http://www.magnumtuning.com/en/detai...zi/jackal-1100 http://www.magnumtuning.com/en/detai...zi/jackal-1100 https://store.58cycle.com/product_p/...FRYbgQodK0oD8g Do you really think K&N air filters make a difference? I've tried them on two different vehicles, one with a carb and one that was fuel injected. Other than being a bit louder under full throttle, I didn't see any performance difference. Isn't it true that a stock air filter is designed to pass the maximum amount of air that the intake can handle? If so, of what benefit is a K&N? They may be capable of more air passing through them under test conditions but if the intake only demands what a stock filter can handle, what's the point? I don't know if the K&Ns pass more air or not. With the three changes I made to my bike it accelerated much faster. I do know that I can dismount, clean, oil, and replace the K&Ns in about a half hour. The stock air filter would take at least an hour just to get to it...buried under the gas tank between frame members with tubes going everywhere. Here's what the stock filter looks like: https://www.harpermoto.com/images/pl...air-filter.jpg Here's a pic showing how it's mounted, but you have to look very closely. It's under the top center frame member, between the two side frame members, snuggled down between the two cylinders. http://image.wikifoundry.com/image/1...3686/GW448H336 Here's the K&N installation: http://www.spedizione.nl/wp-content/...-3-2015-41.jpg I never tried a K&N on any of my motorcycles so I have no personal experience. However, I was curious and ran across this explanation in a motorcycle forum. Guy seems to know what he's talking about: "Several years ago a bunch of BMW motorcycle enthusiasts decided to test the claims. They dyno tested several bikes with factory air filters, K&N filters, and NO filter, and made several runs. There was exactly zero measurable power increase. The claims tend to work like this: -Factory air filter produces 1.5" H2O pressure drop. -Wonder filter produces only 0.5" H2O pressure drop. Wonder filter is 300% better!!! This ignores the fact that atmospheric pressure is about 384"H2O. Therefore a 1.5" pressure drop represents, at most, a 0.3% power loss. If the improvement were directly proportional to pressure, then the wonder filter might produce a 0.2% power increase, which is completely buried in the noise of temperature variations and barometric pressure changes. But this is not the case. Mass flow varies as the square root of pressure drop, so that difference in pressure allows only 0.1% more mass flow. The actual difference is even less than that though. Because the filter is only part of the total pressure drop between open atmosphere and the inside of the cylinders. Most of the drop is still going to be getting past the intake valve(s). Tuned intakes can mitigate this over narrow rpm ranges, and this is of course where peak torque is measured, so really sensitive measurements may pick up an improvement in peak torque, but anywere else the pressure loss across the filter is meaningless. My use of K&Ns on the Guzzi is purely convenience...and they're cheap. The two on their now have lasted over 25 years. Can't bitch about that. Understand. My problem are the claims that K&N air filters increase horsepower and performance. By themselves, I don't buy it. If you change your 2 barrel Carter for a 4 barrel Holley and add a K&N ... sure. When I was 16 or 17 my first car was a '62 Ford Galaxie. It was fun to take the air cleaner assembly completely off and floor it to hear the roar of the air entering the intake through carb. Car didn't go any faster. It just made more noise. Yup. I've never read anything showing K&N performance increases except on K&N pubs or packages. On my bike I think the jetting and open exhaust made the performance increase. And, of course, it helps to have an HIV Positive physique, as Krause would say. |
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