Thermostat

[Tony Buchanan]

Hey guys I’m new here and slowly finding all the diagrams for my boat. I’ve got a 1974 SeaRay with a SBC 350 in it. It was rough when I bought it but it runs strong now. In this picture should there be a thermostat? If so what temp? 140-160? Thanks

 

[DennisWittig]

Yes and 160, there’s also a plastic holder that goes in there

 

[Espos4]

I think you need to turn the housing over and look inside there for the thermostat.

 

[DennisWittig]

Go here and find your engine and stern drive package match diagrams are all there https://www.mercruiserparts.com/v-8-sterndrive-engines

 

[Tony Buchanan]

Thanks guys. I’ll pick that up tomorrow.

 

[hpcrank]

My manual says 140 unless you do a lot of slow going like trolling, then use 160. My engine is a 1981 Mercruiser 330/454.