engine not reaching operating temp

I live on Breton Bay, just south of you. Splashed our 340 this past weekend. Only got up to 150 degrees. Bay water temp was only like 50 degrees. Colder water going in, more effective cooling. No worries - as soon as the water warms up you will be right back up to your normal temps.
 
Thanks for all the advice and tips on my cooling problem. Finally got a nice day and took Scoflaw's advice and "RAN IT LIKE I STOLE IT". Ideled out for about 15 mins, temp still around 135. Got up on plane and temps came up to 160 and stayed there. All is good. Thanks Again.

Lucky you!

Got to go for a ride AND fixed a problem.
 
Hi there
Can anyone please confirm what issues I can expect from the engine not reaching normal op temp? The reason I ask is because we replaced our engine because it overheated and stopped, we had replaced the thermostat housing (the GLM aftermarket one) and for some reason I think an airlock developed stopping water from entering the engine? We have been told to remove the stat and all seems O.K except not reaching temp although I have noticed a "stumble" develop after slow speed which is most of our speed when towing a small tender and condensation on the intake where the carb attaches to the intake. The GLM unit has the stat in the housing away from the engine is this normal?
Thanks Melissa
 
The issues for the most part are long term, in effect you are always running a "cold" engine which is not good. Nothing is going to break immediately, but long term the engine is likely to develop problems. It's possible your "stumble" and the condensation around the intake are related. As air compresses through the carburetor venturi, it also cools. You need to fix the issue, it's unlikely there was an air lock associated with the thermostat, the more likely problem is the thermostat is installed incorrectly or is the wrong type (even expert mechanics have installed those things backwards!) - especially since you have a different housing. There are dozens of different configurations with gaskets, housings etc. When right they work flawlessly for years, when wrong they can really cause temperature problems.
 
As mentioned above, recheck your gasket and make sure coolant has no means of getting through the thermostat. I've made the gasket mistake on a car in the past.
Your engine will be less efficient if running cold. Your oil can get dirtied quickly so when you figure this out you might want to do an oil change
 
Regards #23, what year are your engines. Carb or fuel injected? Running a fuel injected computer controlled engine cold would certainly have adverse effects. An engine with a carb and no computer not so much.
 
It turned so cold in Chicago, I saw a squirrel this morning blowing on his nuts to keep them warm!
 
Regards #23, what year are your engines. Carb or fuel injected? Running a fuel injected computer controlled engine cold would certainly have adverse effects. An engine with a carb and no computer not so much.
Hi again
Thanks for the replies, yep carb engine I am about to check the engine timing to see where that is at.
 

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