what is a good running temperature

[mannydvk11]

hello every one i took my boat out last Sunday i have a 1996 23.5 Larson Hampton with a 5.7 mercruser i know-this after running at 30 mph my temperature was a bit hi in the gauge show running at normal speed at 180f when i give it some speed its running at 190f some times a bit higher if i slow down it go back to normal so i think can some one tell me what is the normal running temp

 

[Don S]

Re: what is a good running temperature

If this is a raw water cooled engine with a 160? thermostat as it should have, then you have a problem some where. How old is the impeller? What drive do you have? Is it raw water cooled or do you have closed cooling? Do you boat in salt or fresh water?

 

[Bondo]

Re: what is a good running temperature

hello every one i took my boat out last Sunday i have a 1996 23.5 Larson Hampton with a 5.7 mercruser i know-this after running at 30 mph my temperature was a bit hi in the gauge show running at normal speed at 180f when i give it some speed its running at 190f some times a bit higher if i slow down it go back to normal so i think can some one tell me what is the normal running temp

Ayuh,.... I'd Guess, yer overdue for a new Impeller.....

 

[mannydvk11]

Re: what is a good running temperature

If this is a raw water cooled engine with a 160? thermostat as it should have, then you have a problem some where. How old is the impeller? What drive do you have? Is it raw water cooled or do you have closed cooling? Do you boat in salt or fresh water?[/QUOTE


thanks for the quick replay i have a alpha one salt water i don't know what is the impeller o where is is

 

[Don S]

Re: what is a good running temperature

thanks for the quick replay i have a alpha one salt water i don't know what is the impeller o where is is

The impeller is something that should be replaced every few years in salt water boats. It's located in the top portion of the lower unit on the outdrive.

View attachment A1G2 Impeller Replace.pdf

Problem is, if it hasn't been looked at since then, what else is behind in maintenance. Has the drive been off and/or the bellows checked and replaced? Alignment checked? Coupler splines greased?
Has the exhaust elbows ever been off and the gasket surface and water passages inspected?
If you don't know, things could easily start going bad at this point and the cost of repairs could start getting really ugly.

 

[mannydvk11]

Re: what is a good running temperature

wow so many things i just got this boat from a friend he had it for a few years and for the pass 3 years the boat have not being in the water to now

 

[Don S]

Re: what is a good running temperature

Then just ask him about what he has done to the boat maintenance wise while he owned it. He probably won't mind sharing once he finds you want to get it fixed up.
Sitting for 3 years, you do need to pull the drive, look at things, and replace the impeller and check things out before you go out again.

 

[ktbarrentine]

Re: what is a good running temperature

The question now is.... are you capable, (and ready) to begin tackling all the required maintenance items, or do you plan on taking the boat to a shop for the work? (I guess we answered the original question of this thread, and it seems obvious that this little gem needs some TLC!).

 

[mannydvk11]

Re: what is a good running temperature

Then just ask him about what he has done to the boat maintenance wise while he owned it. He probably won't mind sharing once he finds you want to get it fixed up.
Sitting for 3 years, you do need to pull the drive, look at things, and replace the impeller and check things out before you go out again.

well i just call him he tells me he don't remember but he always change the engine oil, sparks plugs wires but that was long ago

 

[mannydvk11]

Re: what is a good running temperature

The question now is.... are you capable, (and ready) to begin tackling all the required maintenance items, or do you plan on taking the boat to a shop for the work? (I guess we answered the original question of this thread, and it seems obvious that this little gem needs some TLC!).

i love diy i don't know much about boats but i can learn really fast i am and elevator mechanic and really on hands on cars

i think i am up for the challenge with a bit of help from you guys i can post pics and videos of the work done so where do i need to start

 

[Bondo]

Re: what is a good running temperature

so where do i need to start

Ayuh,..... In the Adults Only section at the top of this forum.....

 

[Don S]

Re: what is a good running temperature

Here are a couple of items you WILL need.
These are downloadable OEM service manuals for your engine and one for your drive.

Engine - http://www.4shared.com/office/yskQdytS/17__GM_V8_305-350_93-97.html?
Drive - http://www.4shared.com/office/2V0kM3lL/14__Alpha_I_Gen_II__Drives_91-.html?

 

[mannydvk11]

Re: what is a good running temperature

is there any good brand o company i can order the kit

 

[stonyloam]

Re: what is a good running temperature

Yeah, Mercruiser/Quicksilver. IMHO OEM for critical parts, and what you are replacing are ALL critical.

 

[mannydvk11]

Re: what is a good running temperature

i just order the new kit from west marine it will be here tomorrow i will be working on it Saturday or Sunday if i have a chance ill post some pictures

 

[mannydvk11]

Re: what is a good running temperature

hello guys i have some updates i install the new gaskets and new impeller also i find out the engine did not had a thermostat so i put a new one after i put everything together i test the lower unit by turning the engine on and running water now i have a small Question is it normal if water comes out from the areas you see in the pic i get small amount of water sprinkle out of the back and on the joint around is this normal o somthing is wrong

there is a small hole there

behind the here

 

[Bondo]

Re: what is a good running temperature

hello guys i have some updates i install the new gaskets and new impeller also i find out the engine did not had a thermostat so i put a new one after i put everything together i test the lower unit by turning the engine on and running water now i have a small Question is it normal if water comes out from the areas you see in the pic i get small amount of water sprinkle out of the back and on the joint around is this normal o somthing is wrong

there is a small hole there

Ayuh,.... The huge exhaust cavity is full of water, 'n very wet when runnin'....

Those are the weep holes, which drains those areas....

Perfectly normal...

 

[mannydvk11]

Re: what is a good running temperature

i feel better now but just in case how will i know if something is wrong

 

[thumpar]

Re: what is a good running temperature

Check the drive lube for water intrusion and the boat for water coming in. Other than that you should be good.

 

[mannydvk11]

Re: what is a good running temperature

Check the drive lube for water intrusion and the boat for water coming in. Other than that you should be good.

i did not took the hall unit out i only took out the bottom part where the impeller is will that bring water in to the boat will i only know when i put it in the water o i can do that with the garden hose

something i forgot to ask is it good i did not had a thermostat and i add it a new one should i live it with out it will it preform better