1996 35hp johnson getting very hot

[toker420]

I got a 1996 35hp johnson commpression is 118 on top and 120 on bottom.motor runs good but the power heads get really hot.I checked the water pump and impelit they where good but little drips of water comes out pee hole when idling is that how it supposed to be.when i a give it power a little bit more water come out but i dont think it is enough.what temper should the heads be?I got a tool to check how hot it is.???

 

[tashasdaddy]

Re: 1996 35hp johnson getting very hot

tstats open at 140* full open 160* should not be above 160* it sounds like the impeller should be replaced along with the Tstat, just to be safe. while doing it, flush the system thru the tstat. also make sure no critter have blocked your tale tell hose, run weedeater line or wire, up the hose.

 

[toker420]

Re: 1996 35hp johnson getting very hot

ok I am going to try that this weekend.I will get back to you with the results.
thank you.

 

[toker420]

Re: 1996 35hp johnson getting very hot

ok I replaced the impeller then I opened the head to get to the tstat and fround
a lot of sand in there.going to clean all that out. tstat was bad got to get new one and gaskets.I guess the guy that had it before run it in to the sand
is there any thing else I should look into while I am in there.

 

[tashasdaddy]

Re: 1996 35hp johnson getting very hot

you should be good to go.

 

[Sandhammaren05]

Re: 1996 35hp johnson getting very hot

Unless you use the motor in winter in the north, take out the thermostat and throw it away. I raced OMC motors for 10 years, always removed the thermostat when it was allowed by rules (otherwise, I threw it into boiling water until it sprung and stayed open).

I got a 1996 35hp johnson commpression is 118 on top and 120 on bottom.motor runs good but the power heads get really hot.I checked the water pump and impelit they where good but little drips of water comes out pee hole when idling is that how it supposed to be.when i a give it power a little bit more water come out but i dont think it is enough.what temper should the heads be?I got a tool to check how hot it is.???

 

[tashasdaddy]

Re: 1996 35hp johnson getting very hot

Sandhammaren05, sorry but i totally disagree on removing the tstat. that is fine for racing, but not normal usage.

 

[CATransplant]

Re: 1996 35hp johnson getting very hot

I agree with TD. The manufacturer put a thermostat in the outboard for a reason. They wanted the engine to run at a specific temperature range. Removing it lowers the operating temperature of the engine.

Logic says that they wouldn't have engineered a thermostat into the cooling system without a reason, since they could have made more money by not doing so.

Racing is a completely different animal than normal use of an outboard. What racers do doesn't apply to normal users.

 

[Sandhammaren05]

Re: 1996 35hp johnson getting very hot

It's very fine for normal use, I threw away the thermostats in my 15 and 35.
Will throw aaway the one in my 7.5 if I ever have reason to pull the head waterjacket.

Sandhammaren05, sorry but i totally disagree on removing the tstat. that is fine for racing, but not normal usage.

 

[Sandhammaren05]

Re: 1996 35hp johnson getting very hot

Thermostats are there to warm up the motor for better idling in cold water.
If you want to troll, leave it in but I'd advise against trolling with 15s and 35s.

Ignore the nonsense below, racers can tell normal users how to get more out of their rigs.

I agree with TD. The manufacturer put a thermostat in the outboard for a reason. They wanted the engine to run at a specific temperature range. Removing it lowers the operating temperature of the engine.

Logic says that they wouldn't have engineered a thermostat into the cooling system without a reason, since they could have made more money by not doing so.

Racing is a completely different animal than normal use of an outboard. What racers do doesn't apply to normal users.