17 replies to this topic

[dklawson]

I cannot read which dots have changed colors in your picture.  What highest temperature do they indicate.

 

Sorry about your post on the other board.  I tried to prompt people there to get back on track with helpful suggestions.

 

Your idea of the capillary gauge is also good.  Even if you don't decide to keep using that type of gauge, you can at least fit a modestly priced one temporarily until you become confident about what  the engine temp is really doing.  You will find it a lot easier to check the calibration of the mechanical gauge against the thermocouple you have borrowed.  Just bring a pot of water to boiling and put both the capillary tube gauge's expansion bulb and the thermocouple in the water but not touching the pot.  Record the starting temperature reading of both, then turn off the heat and every few minutes write down what both instruments are displaying.  This is much easier with the capillary gauge than with an electric one.

Edited by dklawson, 26 May 2014 - 04:26 PM.

[PACINO]

 
Ill get to the bottom of this and list my findings

I don't know if you got to the bottom of the matter... but here you didn't tell or list ANYTHING.
What a bad habit people have of leaving a post unfinished and without telling the end of the story. This would help others.

[lsto]

This is a ten year old thread and the OP was last active in 2022...
My 998 was rebuilt last year, during the run in period it run warmer than I expected, but bear in mind as all the surfaces wear in they will generate a lot of friction which also contributes to the engine temp.
I do a 50 odd mile commute each day in my car, I find the temp gauge sits about half way if I'm driving through town, when on motorways it sits just over 3/4 on the gauge and when I'm sitting in traffic it again goes past half way. It's an old car so I expect a lot of fluctuation on the gauge unlike my modern car what sits perfectly at half way on the gauge.
I installed an auxiliary fan which cuts in when I'm stuck in traffic but as long as the temperature doesn't creep into the red I wouldn't really worry. The engine is cast iron so can take a lot more heat then modern aluminium heads. As long as it doesn't overheat then I wouldn't worry.
Good luck.