Slow Engine Warm Up

[Anker]

Reviving an old thread.

Having the 986 S out of winter storage I decided to check the warm up time to full engine temperature (needle covering the 8 in 180). 40 degrees F and suburbian roads with little traffic, max speed 45 mph.

At 5 minutes the needle was between the second and third line, the third being the 180 degree line. At 6 minutes the engine was up to full operating temperature.

At higher ambient temperatures and/or higher speeds the temperature would have risen faster.

If you run a low temperature thermostat in the mistaken belief that it will reduce engine overheating (see Low Temp Thermostats: What’s the Advantage? | Tuner University), then the warm-up temperature will be longer and engine wear will be higher.

[Starter986]

Originally Posted by Anker

Reviving an old thread.

Having the 986 S out of winter storage I decided to check the warm up time to full engine temperature (needle covering the 8 in 180). 40 degrees F and suburbian roads with little traffic, max speed 45 mph.

At 5 minutes the needle was between the second and third line, the third being the 180 degree line. At 6 minutes the engine was up to full operating temperature.

At higher ambient temperatures and/or higher speeds the temperature would have risen faster.

If you run a low temperature thermostat in the mistaken belief that it will reduce engine overheating (see Low Temp Thermostats: What’s the Advantage? | Tuner University), then the warm-up temperature will be longer and engine wear will be higher.

The logic of #8 sold me.

https://rennlist.com/forums/996-forum/621275-does-the-ln-low-temp-thermostat-help-prevent-cracked-heads-cylinders.html

[Boxstard]

Originally Posted by Starter986

The logic of #8 sold me.

https://rennlist.com/forums/996-forum/621275-does-the-ln-low-temp-thermostat-help-prevent-cracked-heads-cylinders.html

And #5, 5hp gain from cooler running engine!

And with a manual radiator fan switch at my fingertip, lower temp thermostat gives greater control to manage temp rise in heavy traffic in hot summer!

[Quadcammer]

Originally Posted by Anker

Reviving an old thread.

Having the 986 S out of winter storage I decided to check the warm up time to full engine temperature (needle covering the 8 in 180). 40 degrees F and suburbian roads with little traffic, max speed 45 mph.

At 5 minutes the needle was between the second and third line, the third being the 180 degree line. At 6 minutes the engine was up to full operating temperature.

At higher ambient temperatures and/or higher speeds the temperature would have risen faster.

If you run a low temperature thermostat in the mistaken belief that it will reduce engine overheating (see Low Temp Thermostats: What’s the Advantage? | Tuner University), then the warm-up temperature will be longer and engine wear will be higher.

Oh boy. First, your coolant gauge is absolutely useless. 2nd, do some research about low temp thermostats on these cars before making such comments.