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#11
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
jamesgangnc wrote: Are you sure that no one has removed the drains on the manifolds or the sides of the block? Both locations have removable plugs designed to allow the engine to be drained for winter. When I winterize my boat I take them out and leave them out until spring. It is not old enough for corrosion to have taken out the casting aka "freeze" plugs unless someone mistakely used steel ones when it was built. One of the differences in marine engines is the use of brass casting plugs isntead of steel ones. Changing the impeller in the outdrive would not have any effect on the water coming out the sides of your engine so this is a different problem. When the original impeller went south how long did the engine run overheated? Perhaps the overheating could have had some other effect leading to this problem. Such as melted water or exhaust hoses on the manifolds. The manifolds will get very hot if the boat is run for any length of time without cooling water. The rubber parts in and connected to the exhaust system will not take it for long before they melt. The motor only ran long enough for me to park my truck/trailer and for the wife to pull to the dock to pick me up. I would roughly guess around 3 - 5 minutes. Following the replies last night, I went back into the engine compartment and found one of the expansion plugs laying next to the bilage pump. The other plug is still in but must be cocked for it is leaking. This one will be a problem for it is directly behind a motor mount. I am going to purchase a couple of plugs and install them to see if there are any other pending (hidden) issues. I had been told that I could get expansion plugs from a local parts dealer that are expandable by way of a bolt instead of the "tap in" types that would be supplied by Volvo (or aftermarket). Has anyone used these types of plugs? Can anyone recommend how to replace the plug that is behind the motor mount? It would be much easier to take it to a local repair shop but I want to do the work myself.... how else am I to learn the fundamentals? |
#12
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
Yes, there are rubber plugs that you put in and tighten with a nut in the
center. These are simpler to use with the engine in place because the metal ones have to be driven in and it is hard to get a straight go at the block while it is in the boat. That is a good recomendation. If you can get behind the mount that would be the best as I'm sure you've figured out :-) If not you will need to support the engine on that side while you remove the motor mount. Sounds like you are prety handy since you've spotted the casting plug problem. If you place some wood in the bottom of the boat you should be able to get a hydralic bottle jack to hold up the side of the engine at the edge of the oil pan where it is bolted to the bottom of the block. You will have to play around with wood scraps to get a flat platform to rest the bottle jack on. You want to distibute the load on the bottom of the boat as much as is practical with the wood. Probably 2-300 lbs of load involved so it is not a lot worse than a big guy standing on one foot. You may also need to place a small scrap of wood on top of the bottle jack to keep from crushng the edge of the oil pan. Typically there is not enough room directly under the oil pan for a jack, that's why you have to go at the edge of the block. Break the bolts that hold the mount on the block free but do not loosen. Remove the top big nut on the boat end of the mount. Then jack just until the engine mount starts to lift a little. Then you should be able to remove the mount from the block. As you can imagine try to make sure the bottle jack is solidly in place and take care not to jar anything any more than you have to while the side of the engine is on the jack. Of course do not reach under the engine either. Have everything ready to go so that you can complete the repair and do not have to leave the engine on the jack any longer than needed. Be careful because we don't want any injured rec.boat posters :-) "landshrk4" wrote in message ps.com... jamesgangnc wrote: Are you sure that no one has removed the drains on the manifolds or the sides of the block? Both locations have removable plugs designed to allow the engine to be drained for winter. When I winterize my boat I take them out and leave them out until spring. It is not old enough for corrosion to have taken out the casting aka "freeze" plugs unless someone mistakely used steel ones when it was built. One of the differences in marine engines is the use of brass casting plugs isntead of steel ones. Changing the impeller in the outdrive would not have any effect on the water coming out the sides of your engine so this is a different problem. When the original impeller went south how long did the engine run overheated? Perhaps the overheating could have had some other effect leading to this problem. Such as melted water or exhaust hoses on the manifolds. The manifolds will get very hot if the boat is run for any length of time without cooling water. The rubber parts in and connected to the exhaust system will not take it for long before they melt. The motor only ran long enough for me to park my truck/trailer and for the wife to pull to the dock to pick me up. I would roughly guess around 3 - 5 minutes. Following the replies last night, I went back into the engine compartment and found one of the expansion plugs laying next to the bilage pump. The other plug is still in but must be cocked for it is leaking. This one will be a problem for it is directly behind a motor mount. I am going to purchase a couple of plugs and install them to see if there are any other pending (hidden) issues. I had been told that I could get expansion plugs from a local parts dealer that are expandable by way of a bolt instead of the "tap in" types that would be supplied by Volvo (or aftermarket). Has anyone used these types of plugs? Can anyone recommend how to replace the plug that is behind the motor mount? It would be much easier to take it to a local repair shop but I want to do the work myself.... how else am I to learn the fundamentals? |
#13
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
landshrk4 wrote:
I am going to purchase a couple of plugs and install them to see if there are any other pending (hidden) issues. I had been told that I could get expansion plugs from a local parts dealer that are expandable by way of a bolt instead of the "tap in" types that would be supplied by Volvo (or aftermarket). Has anyone used these types of plugs? Can anyone recommend how to replace the plug that is behind the motor mount? It would be much easier to take it to a local repair shop but I want to do the work myself.... how else am I to learn the fundamentals? The rubber expansion plugs will work, to a point. In a marine environment, I would only use them to diagnose any further issues on a test basis, which I have done, because they have a probability of popping out, which will very quickly fill the bilge to a dangerous level with very little advance notice. No typical bilge pump would be able to keep up. If you can somehow extract the obstructed view/access one, you can probably slip a temporary plug in blind, tighten & test, otherwise you are looking at pulling the engine twice if you go rubber, once if you go with the brass to start & luck out with no other issues at re-start. Which brings us back to the initial failure - did you get ALL rubber fragments/parts out of the engine & drive when changing the impeller? If you can account for all parts, do the brass plugs and hope that the block is not cracked. Did you have any kind of low temperature alert or alarm in your storage area? Rob |
#14
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
I'd only agree to a point. This is a trailer boat. I'm betting he's not
taking it 20 miles offshore. If the plug comes out the water will stop coming in when he stops the engine. One could run a while and then stop to let the bilge pump catch up. Besides we're talking about 3 or 4 lbs of pressure. I've seen these rubber plugs go for years in cars with 15lb pressures. I agree that it's certainly a good idea to get them in to make sure there are no other problems but similarly I would not pull the engine just to replace a couple casting plugs. He's not going to be in a position to pull the engine himself and a yard will charge him a grand or so to do it. I do share your concern that these plugs did not come put because of the overheating. It really sounds like this block may have frozen and the newer thin walled blocks seldom survive that. "trainfan1" wrote in message et... landshrk4 wrote: I am going to purchase a couple of plugs and install them to see if there are any other pending (hidden) issues. I had been told that I could get expansion plugs from a local parts dealer that are expandable by way of a bolt instead of the "tap in" types that would be supplied by Volvo (or aftermarket). Has anyone used these types of plugs? Can anyone recommend how to replace the plug that is behind the motor mount? It would be much easier to take it to a local repair shop but I want to do the work myself.... how else am I to learn the fundamentals? The rubber expansion plugs will work, to a point. In a marine environment, I would only use them to diagnose any further issues on a test basis, which I have done, because they have a probability of popping out, which will very quickly fill the bilge to a dangerous level with very little advance notice. No typical bilge pump would be able to keep up. If you can somehow extract the obstructed view/access one, you can probably slip a temporary plug in blind, tighten & test, otherwise you are looking at pulling the engine twice if you go rubber, once if you go with the brass to start & luck out with no other issues at re-start. Which brings us back to the initial failure - did you get ALL rubber fragments/parts out of the engine & drive when changing the impeller? If you can account for all parts, do the brass plugs and hope that the block is not cracked. Did you have any kind of low temperature alert or alarm in your storage area? Rob |
#15
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
James wrote:
I'd only agree to a point. This is a trailer boat. I'm betting he's not taking it 20 miles offshore. If the plug comes out the water will stop coming in when he stops the engine. One could run a while and then stop to let the bilge pump catch up. Besides we're talking about 3 or 4 lbs of pressure. The pressure is of little concern here - it's volume if it does pop out, & the lack of notice. The boat may well go on running happily for some time until the water comes up over the floor. I've seen these rubber plugs go for years in cars with 15lb pressures. I agree that it's certainly a good idea to get them in to make sure there are no other problems but similarly I would not pull the engine just to replace a couple casting plugs. He's not going to be in a position to pull the engine himself and a yard will charge him a grand or so to do it. Your jacking/support suggestion was good, if it only needs to be done once, and a complete visual can be done at the same time. Will save on alignment issues especially. Rob |
#16
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
"trainfan1" wrote in message et... James wrote: I'd only agree to a point. This is a trailer boat. I'm betting he's not taking it 20 miles offshore. If the plug comes out the water will stop coming in when he stops the engine. One could run a while and then stop to let the bilge pump catch up. Besides we're talking about 3 or 4 lbs of pressure. The pressure is of little concern here - it's volume if it does pop out, & the lack of notice. The boat may well go on running happily for some time until the water comes up over the floor. I've seen these rubber plugs go for years in cars with 15lb pressures. I agree that it's certainly a good idea to get them in to make sure there are no other problems but similarly I would not pull the engine just to replace a couple casting plugs. He's not going to be in a position to pull the engine himself and a yard will charge him a grand or so to do it. Your jacking/support suggestion was good, if it only needs to be done once, and a complete visual can be done at the same time. Will save on alignment issues especially. Rob Just as a side ... as someone else mentioned there may be some NPT pipe thread plugs on each side of the engine below the manifolds. I had an older Mercruiser clone (350 chevy) engine that one of these plugs corroded internally to the point where it starting ****ing water out of the side of the engine. It was late in the season, so an application of MarineTex worked until we pulled the boat in the fall and replaced the plug, as it was impossible to get to without removing the manifold. Marine Tex should be second to a roll of Duct Tape as emergency supplies on an older boat. RCE |
#17
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
Why these plugs are out is still suspect so you are right, it could involve
any of them. The boat owner seems pretty certain that the engine did not freeze so it's still a mystery to me. I've never seen these come out as the result of anything other that freezing or corrosion. The ones at the sides are very low in the cooling jackets. I suppose defective installation is a possiblity. "Tim" wrote in message oups.com... James wrote: I agree that it's certainly a good idea to get them in to make sure there are no other problems but similarly I would not pull the engine just to replace a couple casting plugs. He's not going to be in a position to pull the engine himself and a yard will charge him a grand or so to do it. Please remember though, that there are two plugs on the back of the engine between the block and the flywheel. Obviously that if a couple plugs are damaged, there may be more, and water could eventually seep from the back of the engine, so the engine would have to be removed. Also a head gasket could be leaking. I've seent hem not leak coolant into a cylinder, but be lieaking to the outside. Highly improbable, but not impossible. |
#18
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
On 8 Jun 2006 12:52:51 -0700, "landshrk4"
wrote: jamesgangnc wrote: Are you sure that no one has removed the drains on the manifolds or the sides of the block? Both locations have removable plugs designed to allow the engine to be drained for winter. When I winterize my boat I take them out and leave them out until spring. It is not old enough for corrosion to have taken out the casting aka "freeze" plugs unless someone mistakely used steel ones when it was built. One of the differences in marine engines is the use of brass casting plugs isntead of steel ones. Changing the impeller in the outdrive would not have any effect on the water coming out the sides of your engine so this is a different problem. When the original impeller went south how long did the engine run overheated? Perhaps the overheating could have had some other effect leading to this problem. Such as melted water or exhaust hoses on the manifolds. The manifolds will get very hot if the boat is run for any length of time without cooling water. The rubber parts in and connected to the exhaust system will not take it for long before they melt. The motor only ran long enough for me to park my truck/trailer and for the wife to pull to the dock to pick me up. I would roughly guess around 3 - 5 minutes. Following the replies last night, I went back into the engine compartment and found one of the expansion plugs laying next to the bilage pump. The other plug is still in but must be cocked for it is leaking. This one will be a problem for it is directly behind a motor mount. I am going to purchase a couple of plugs and install them to see if there are any other pending (hidden) issues. I had been told that I could get expansion plugs from a local parts dealer that are expandable by way of a bolt instead of the "tap in" types that would be supplied by Volvo (or aftermarket). Has anyone used these types of plugs? Can anyone recommend how to replace the plug that is behind the motor mount? It would be much easier to take it to a local repair shop but I want to do the work myself.... how else am I to learn the fundamentals? Glad we found the problem. Fixing it is beyond my ken, but there are a bunch of smart folks here who can help. Good luck! -- John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** |
#19
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
I want to thank everyone for their responses and recommnedations. I will attenpt to replace the plugs with the bolt type to determine if there are additional issues. (first attempt willbe without removing the motor mounts). If successful I will boat on! If not, I'll be taking it in to a reputabile repair center and hopefully be back on the water soon. Again, I can't thank all of you enough! Jeff |
#20
posted to rec.boats
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Cooling Problem w/ 4.3 GL vovlo I/O
On 9 Jun 2006 12:31:32 -0700, "landshrk4"
wrote: I want to thank everyone for their responses and recommnedations. I will attenpt to replace the plugs with the bolt type to determine if there are additional issues. (first attempt willbe without removing the motor mounts). If successful I will boat on! If not, I'll be taking it in to a reputabile repair center and hopefully be back on the water soon. Again, I can't thank all of you enough! Jeff You're most welcome, and good luck! |
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