T-stat for 5.7 HO TBI

Vince is the man. He figured out the the T-stat was in upside down. I put the new one in the same way I took the old one out. Flipped it over works fine. So i think before i change anything else I will check with him first. Thanks again for the help.

Pretty sure that's a bypass thermostat so yes it will be open to some extent and fully open when the engine gets hotter. That's all I got for you, call Vince at Skidim

The temp doesn't even get to 120deg. When you look at this T-stat you can see right thru it. That is what i am trying to tell you it is not like a normal stat. I did take it out on a lake a week ago. It never got near 120. One thing i noticed today while running it on the trailer is that the front of the engine water pump and intake area always is cold. Like 80-90 deg. Checked with a heat gun. But the center of the intake shows 188-190deg. Is something blocked within the cooling system??

Maybe I should have looked into the T-stat further. The new one arrived today and it looked
just like the old one. These T-stats don't look like like normal t-stats. As far as what they look like in the closed position. So I installed it anyway. The engine still will not come up to normal operating temp. I ran it today for 20 min. on the trailer. It's not the temp. gauge or sending unit.

Yes, It is stuck in the full open position. Engine will not come up to normal temp.

My nearest dealer is 1- 1/2 away. So I've been buying most parts online. This engine falls into like a grey area when ordering parts. Even PCM said it's a little odd that this motor a 350 was put in this 96 Nautique.

Have you checked SkiDim's website or simply called your local dealer?

Looks like this one

Does any know the correct T-stat for this engine? It's a 96 TBI electronic dist. no points. I'll try to attach a pic. of the one that is in there now.