Someone removed the thermostat on my 470

[natemoore]

I live in the panhandle of Florida and don't plan on running my boat when it's really cold out. I suppose someone removed the thermostat because of over-heating concerns.

Should I put one back in?

 

[rodbolt]

Re: Someone removed the thermostat on my 470

removal of the t-stat on the 3.7 motoes is a warrenteed overheat.
read the tech bulliten about it.
the t-stat directs flow for either bypassing the heat exchanger,or not.
if I think about it when I get home or keep bumping this thread I actually have it sitting on my workbench.
DonS may have it as well.

 

[natemoore]

Re: Someone removed the thermostat on my 470

removal of the t-stat on the 3.7 motoes is a warrenteed overheat.
read the tech bulliten about it.
the t-stat directs flow for either bypassing the heat exchanger,or not.
if I think about it when I get home or keep bumping this thread I actually have it sitting on my workbench.
DonS may have it as well.

Do you mean guaranteed or warrantied?

I've been searching the internet for that tech bulletin. No luck. I appreciate you posting it when you have time.

Thanks

 

[Don S]

Re: Someone removed the thermostat on my 470

guaranteed

Install a thermostat, the previous owner probably had an overheat and removed it. May very well be part of why you have the engine out.

 

[natemoore]

Re: Someone removed the thermostat on my 470

guaranteed

Install a thermostat, the previous owner probably had an overheat and removed it. May very well be part of why you have the engine out.

Wilco. It never overheated the three times I took it out, though.

 

[Don S]

Re: Someone removed the thermostat on my 470

Wilco. It never overheated the three times I took it out, though.

It may not have overheated, at least where the temp sender sets, but what about other parts of the engine. The thermostat controls the movement of antifreeze through the engine. Without it, (since liquids follow the path of least resistance,) you have less flow around the back of the engine and more flow around the front.

 

[natemoore]

Re: Someone removed the thermostat on my 470

It may not have overheated, at least where the temp sender sets, but what about other parts of the engine. The thermostat controls the movement of antifreeze through the engine. Without it, (since liquids follow the path of least resistance,) you have less flow around the back of the engine and more flow around the front.

Well, my number 4 cylinder was definitely the problem child. There was coolant stains on the block just below head gasket, there was rust on the cylinder walls, and yesterday while checking the pushrods for straightness, I found the #4 exhaust (?) pushrod (number 8 in the lineup) was bent considerably.