Thread: 300Tdi aftermarket t/stat warning....

"TT265-180, the lower/bottom ring is a touch smaller in OD than the 2 OEM I have but It still does the job. It has 71c stamped up inside the copper tube."

Hi, I am quite certain that any tridon TTxxx-180 thermostat opens at 82degC. The last figure is always temperature in fahrenheit, and 180F is 82C

ok bye

Also, just about every car I have had I have always fitted a lower opening thermostat, this being on account of the cars being either jap or european, but I suspect my logic was/is wrong and really was not based on much except paranoia that I will overcook my engine in the extreme Australian summer, although when I have been to europe in summers I have seen 40degC temps there too. The designers of the engine have worked out an optimum temp for the engine, the proper thermostat just gets it there quicker, the lower opening thermostat will eventually allow the engine to reach the same temp but it slows the process down, so despite my paranoia I know I should be fitting the specified thermostat, but some uncontrollable force within usually drives me to source the lower temp one.

Originally Posted by toc_bat

"TT265-180, the lower/bottom ring is a touch smaller in OD than the 2 OEM I have but It still does the job. It has 71c stamped up inside the copper tube."

Hi, I am quite certain that any tridon TTxxx-180 thermostat opens at 82degC. The last figure is always temperature in fahrenheit, and 180F is 82C

ok bye

Also, just about every car I have had I have always fitted a lower opening thermostat, this being on account of the cars being either jap or european, but I suspect my logic was/is wrong and really was not based on much except paranoia that I will overcook my engine in the extreme Australian summer, although when I have been to europe in summers I have seen 40degC temps there too. The designers of the engine have worked out an optimum temp for the engine, the proper thermostat just gets it there quicker, the lower opening thermostat will eventually allow the engine to reach the same temp but it slows the process down, so despite my paranoia I know I should be fitting the specified thermostat, but some uncontrollable force within usually drives me to source the lower temp one.

well it has 71c stamped in the same spot as the others have 82c.....so go figure??? moot point really as it most probably wont be doing the job propperly due to its physical dimensions.

I choose to run a lower T/stat, becasue I fitted a more powerful engine, to an alreay marginal cooling (both inter and rad) system. I have a winch that blocks 1/3 of the frontal area and I tow a 1.8t trailer daily.....each to there own