[TR] Overheating GT6

[GHaynesTR4 at aol.com]

Darrell,
I had a similar overheating problem with my Mk I GT6 (w/Mk III engine) except 
mine would keep creeping up the gage until it boiled over.   
As you know, the filler cap is not the highest point in the system and air 
can be trapped.   
The list suggested slowly topping up the system with the front of the car 
raised as high off the ground as possible, then "burping" the lower hose until 
all bubbles were eliminated.   I also put a   petcock thingie at the highest 
point of the cooling system, which is adjacent to the heater.   I can crack that 
open to expel any trapped air.   Make sure the ducting is in place in front of 
the radiator, and run a 165 degree thermostat.   As additional insurance, I'm 
now using both the engine-driven fan and an electric fan in front of the 
radiator, which has a high-density core.   I'm gonna add an oil cooler next; can't 
have enough backup help!   Most recently, the gage reads about 1/3 of the 
scale.   Like to think the problem is gone, but not really sure yet.   We"re 
talking about driving it to Ypsilanti (from Rochester, NY), along with the TR4A; a 
reasonable test drive.   See you there, and you'll get a full report!   Good 
luck!
George Haynes


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