88 galaxie omc 4.3 thermostat question

[mick97]

Hi,

I have a omc that i just replaced the water pump in.
I had it in the lake and it heated up to 180,then cooled down just fine.
Was just tooling around for 1/2 hour or so.
Then i kicked it down,and all was well.

But all of a sudden it heated up and i had to turn it off.
Put in drive way,checked water pump and its ok.

So im wondering about the thermostat.
I took it off,and it looks dirty.

Im guessing it runs fine until it heats and the thermostat is no good.

So i will have to replace it.
But how do i get it out?

Looks like a long spring in the middle,and im not sure how to get it out.
Anyone do this before?

And do i really need it in there?
Was wondering about just going down as far as i can and cut the spring out of it and run the boat without.
But that was just an idea,lol

Any help would be appreciated.
Scotty

[cr2k]

There is an o-ring that holds it in.

[Kainon]

DO NOT run the boat without the thermostat, its very important to help keep the temps stable for best combustion and performance..


just replace it with a marine one, 160F as mentioned there is a rubber o-ring in there.. you might need a small screw driver or
needle nose pliers..

[mick97]

ok thanks,
An o ring?

i took off the spring,and that let that piece that opens and closes and goes up and down ,free.
i tried to unscrew the top piece,and it seems like it unscrews,but kinda just stops.

I dont see an o ring.
Marine 260 f?
Ok thanks on that one

scotty