Acceptable Operating Temp
 

I have a debate going with a friend of mine of what is acceptable operating temps in a 911. My range was 190 to 220, he says 200 - 240. We both agree 250 is too high.:rolleyes:

That's not even a debate.

190
 

I like to stay close to 100 degrees plus ambient air temperature. ex 80 plus 100 is 180. 240 is way too built up heat in the engine.

OK Milt, myabe a better question is running the car at a temp of 240 for a 3-4 hour drive really not good for the engine?

Mine's ('89) seasonal,...180-220....

240? sustained? Noway, at least for mine.

Doyle

best power and life expectancy will be ~190F+/-, moving away from that # increases wear and reduces power

AshEvan,

If you want to go by logic you might feel that whatever P's engineers marked on the gauge is-what-it-is ; when it gets near the red line its time to cool down.

There are a few things that will affect a temp rise, such as ambient, a long pull up a hill, running with the ac on, running lean, ambients, timing problems, etc.

Here is a lazy thread search for ya:

http://forums.pelicanparts.com/porsche-911-technical-forum/402203-my-oil-temperature-too-hot.html
http://forums.pelicanparts.com/porsche-911-technical-forum/368323-oil-temperature-gauge-calibration.html
http://forums.pelicanparts.com/porsche-911-technical-forum/396228-2-7l-oil-temperature-questions.html
http://forums.pelicanparts.com/porsche-911-technical-forum/390744-cylinder-best-overall-cylinder-head-temperature-reading.html
http://forums.pelicanparts.com/porsche-911-technical-forum/336573-troubleshooting-oil-temperature-problem.html
http://forums.pelicanparts.com/porsche-911-technical-forum/292351-extreme-oil-temperature-74-2-7s.html
http://forums.pelicanparts.com/porsche-911-technical-forum/280974-ideal-oil-temperature.html
http://forums.pelicanparts.com/porsche-911-technical-forum/227320-there-anything-wrong-temperature-reading.html
http://forums.pelicanparts.com/porsche-911-technical-forum/214451-normal-operating-temperature.html
http://forums.pelicanparts.com/porsche-911-technical-forum/190533-oil-temperature-issues-again.html
http://forums.pelicanparts.com/porsche-911-technical-forum/180107-interesting-retard-ignition-increase-temperature.html
http://forums.pelicanparts.com/porsche-911-technical-forum/129969-911-temperature.html
http://forums.pelicanparts.com/porsche-911-technical-forum/114403-what-temperature.html
http://forums.pelicanparts.com/porsche-911-technical-forum/106676-oil-temperature-concerns.html
http://forums.pelicanparts.com/porsche-911-technical-forum/104525-3-2-normal-operating-temperature-range.html
http://forums.pelicanparts.com/porsche-911-technical-forum/231988-temperature-86-carerra.html
http://forums.pelicanparts.com/porsche-911-technical-forum/88705-oil-temperature-advice.html
http://forums.pelicanparts.com/porsche-911-technical-forum/67661-safest-operating-temperature.html

Thanks Everyone
 

Looks like I win the bet

You win that one, hands down! :)

Tell your friend that he gets to buy lunch for everyone here. :) :)

I'll go easy on ya.

BLT on russian rye; Helman's and lightly toasted, pickle and chips, and no diet soda, one Becks.