Sprint GT Alternative Thermostat

No, mate sorry.

 

I don't know that I would be willing to spend ANY money until I am sure what I am buying will solve the problem. I would use one of those electronic non- contact thermometers and sense the upper radiator hose temp. I would be looking for a temp reading of 195°-210°f. You can also tape a mechanical thermometer to the hose an get a reading that is close enough. I would just stick it on with some duct tape and run the engine to get a reading. Also be certain your cooling fan is cycling on and off properly as needed before you start buying parts. ...J.D.

 

When you say runs hot, what do you mean, what's it doing?.

 

Guess he got what he wanted. ...

 

I would be inclined to check that the radiator is passing air through before worrying about thermostats. I am of course assuming you haven't yet looked at the radiator, apologies if you have.

 

Take out the thermostat , test it !
Test method :- put thermostat in a pot , cover it with water , put it on a stove , slowly bring it to the boil , watch to see if it opens ! With a thermometer you can assess whether it is opening at the right temperature.
If it is , the problem Lie's elsewhere ! If it doesn't open you have two options ! Cut centre of thermostat out and refit the outer ring or buy a replacement.
Refitting the outer ring on it's own is at best a temporary repair , engines treated to this repair take longer to warm up to operating temperature.

 

This fix won't affect EFI any differently than a carbureted engine , it will just take three times longer to reach running temperature if the bike is ridden and moving air through the radiator before it's hot ! As the opening for coolant to flow through is fully open , it might run slightly cooler in general too.
I've used this fix on truck , car and bike motors , it give you time to find and install a new working part...

 

I had the same problem and I have cleaned the radiator...from outside with warm water, soap an a soft brush and from inside with liqui moly radiator cleaner.....after this procedure I filled up with ready mixed coolant from motul...the bike runs much cooler and I'm very satisfied.



I hope it works with the pic.....it shows my 4 years old coolant

sorry---cannot upload a pic