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#1
posted to rec.boats
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Volvo Penta V8 Overheating
My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual
props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it. |
#2
posted to rec.boats
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Volvo Penta V8 Overheating
On Sep 4, 9:02 am, Jake S wrote:
My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it. Awesome, what a future this kid has... |
#3
posted to rec.boats
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Volvo Penta V8 Overheating
On Sep 4, 9:36 am, wrote:
On Sep 4, 9:02 am, Jake S wrote: My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it. Awesome, what a future this kid has... Holy crap, wrong thread, I was talking about the racer Chucks group sponsors, sorry Jake, |
#4
posted to rec.boats
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Volvo Penta V8 Overheating
It is a belt driven pump on the front of the engine. It is serviceable.
"Jake S" wrote in message oups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it. |
#5
posted to rec.boats
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Volvo Penta V8 Overheating
On Sep 4, 9:39 am, "jamesgangnc" wrote:
It is a belt driven pump on the front of the engine. It is serviceable. "Jake S" wrote in message oups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it.- Hide quoted text - - Show quoted text - Does the motor still has the traditional water pump on the front like a car does? If so - there are two on the front ? |
#6
posted to rec.boats
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Volvo Penta V8 Overheating
On Tue, 04 Sep 2007 12:55:44 -0700, Jake S wrote:
Does the motor still has the traditional water pump on the front like a car does? If so - there are two on the front ? Yes. |
#7
posted to rec.boats
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Volvo Penta V8 Overheating
Jake S wrote:
On Sep 4, 9:39 am, "jamesgangnc" wrote: It is a belt driven pump on the front of the engine. It is serviceable. "Jake S" wrote in message oups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it.- Hide quoted text - - Show quoted text - Does the motor still has the traditional water pump Yes. Circulation pump... on the front like a car does? If so - there are two on the front ? Yes. And a raw water pump with a rubber impeller. Off to the side or below. Rob |
#8
posted to rec.boats
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Volvo Penta V8 Overheating
On Sep 4, 10:02 pm, trainfan1 wrote:
Jake S wrote: On Sep 4, 9:39 am, "jamesgangnc" wrote: It is a belt driven pump on the front of the engine. It is serviceable. "Jake S" wrote in message groups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it.- Hide quoted text - - Show quoted text - Does the motor still has the traditional water pump Yes. Circulation pump... on the front like a car does? If so - there are two on the front ? Yes. And a raw water pump with a rubber impeller. Off to the side or below. Rob - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - Thanks to all who responded! |
#9
posted to rec.boats
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Volvo Penta V8 Overheating
On Sep 4, 11:12 pm, Jake S wrote:
On Sep 4, 10:02 pm, trainfan1 wrote: Jake S wrote: On Sep 4, 9:39 am, "jamesgangnc" wrote: It is a belt driven pump on the front of the engine. It is serviceable. "Jake S" wrote in message groups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it.- Hide quoted text - - Show quoted text - Does the motor still has the traditional water pump Yes. Circulation pump... on the front like a car does? If so - there are two on the front ? Yes. And a raw water pump with a rubber impeller. Off to the side or below. Rob - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - Thanks to all who responded!- Hide quoted text - - Show quoted text - My Son replaced the impeller and cleaned out somerust buildup in one of the entries in the thermostat housing. He said ti seemed to work - I visited him this week and on the last day there we went out on the boat. Sure enough - take it to full throttle and it over heats - MOST of the time - one time it only went to the midpoint on the gauge. What is interesting is that the performance of the boat was horrible (accelleration was worse than my 4.3L) and full throttle RPM was only about 4200. I have a friend with an same boat and engine but a 98 instead of a 2000 and his goes to 5500 at full throttle. I am suspecting that the poor performance and overheating are related. Does anyine have any idea as to what it could be? Also, what should the top RPM be for this engine? - my 4.3 is 4800 any idea on the timing for this engine? Thanks to any and all who respond. |
#10
posted to rec.boats
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Volvo Penta V8 Overheating
On Oct 12, 12:28 pm, Jake S wrote:
On Sep 4, 11:12 pm, Jake S wrote: On Sep 4, 10:02 pm, trainfan1 wrote: Jake S wrote: On Sep 4, 9:39 am, "jamesgangnc" wrote: It is a belt driven pump on the front of the engine. It is serviceable. "Jake S" wrote in message groups.com... My son has a 2000 Four Winns with a 5.7L V8 Volvo Penta (with the dual props) and it over heats when there is a large group of people on the boat and under throttle. The first thing I would check is the waterpump impeller. I read somewhere that that Volvo Penta doesn't have one in the outdrive (as my OMC or Old Merc did) - If that is the case - where is it and can a boat owner with mechanical ability check it? Are there any other suggestions as to what could be causing this problem? He bought it used earlier this year - it runs great and he has done nothing to it.- Hide quoted text - - Show quoted text - Does the motor still has the traditional water pump Yes. Circulation pump... on the front like a car does? If so - there are two on the front ? Yes. And a raw water pump with a rubber impeller. Off to the side or below. Rob - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - Thanks to all who responded!- Hide quoted text - - Show quoted text - My Son replaced the impeller and cleaned out somerust buildup in one of the entries in the thermostat housing. He said ti seemed to work - I visited him this week and on the last day there we went out on the boat. Sure enough - take it to full throttle and it over heats - MOST of the time - one time it only went to the midpoint on the gauge. What is interesting is that the performance of the boat was horrible (accelleration was worse than my 4.3L) and full throttle RPM was only about 4200. I have a friend with an same boat and engine but a 98 instead of a 2000 and his goes to 5500 at full throttle. I am suspecting that the poor performance and overheating are related. Does anyine have any idea as to what it could be? Also, what should the top RPM be for this engine? - my 4.3 is 4800 any idea on the timing for this engine? Thanks to any and all who respond.- Hide quoted text - - Show quoted text - Something in the mid to high 4k rpm would be better. 5500 is too high. It is possible that the boat has a detonation issue that would cause both a performance problem and an overheating problem. But overheating can also be the cause of detonation. Which in turn causes perfomance problems. So we can't tell which came first without further work. There could also be fuel related problems. So I would do a complete inspection of the cooling system and replace the thermostat. Check the ignition timing with a timing light and test run the boat with premium fuel. If the boat has a lot of lower grade fuel in it then add octane booster and fill the rest of the way with premium. If that doesn't fix it then start checking the fuel system. |
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