wkim48

Hello, everyone! First time owning the 992 C4S for the past 7 months.
I love the car, it drives great, and lots of fun.
Tonight I noticed that the engine (after being turned off) remained hot for 3-4 hours after turn off (with hot air/heat felt coming through the engine vents), and remains warm with heat felt after 6-7 hours still.
I have no engine or dash warning signs.
But is this normal for a 992?

Would love some insight.
Thanks

M Engineering

Engines have a lot of thermal mass, so it can take quite a bit of time to fully cool down. Porsches also have very tightly packed engines in a small space, so heat can't dissipate as fast as some other cars.

-Charles@M

siberian

However you should still hear the extraction/cooling fans cranking for a while after you switch the engine off.

siberian

lucycan

Totally normal

Jon35

I am often amazed by the symphony of sounds that come out of my car after turning it off. First off one hears the automated noises of the doors, and various other systems adjusting to bieng off. Then there is the fan, Then the singng starts - little random metallic pings that seem to be the metals adjusting and cooling down. That can go on for around 30 mins and then finally silence but oh how it warms up my garage. A good lively drive will raise the temp in my garage by 10 degrees F within an hour. And lets not even talk about the smells from the car, the wheel arches, ahhh the smells.

To the OP don't worry - probably means you got the car to peak operating temperature and burnt off all the water in the system. Makes for a healthy car.....

siberian

I do believe Jon35 just had a(nother) man moment...

siberian

mrmichaelsankey

Yep, they stay hot for hours! Wife’s Macanese Turbo and the C4S both in the garage after being run hot will raise the temperature by a good 10C and the “pops & pings” from the 911 go in for ages!

When you look at the water and oil temp after a good run, both being above water boiling levels will take a while to cool, plus the large metal block will be pretty hot and without air flow it’s going to take a while to chill down.

nothing to worry about, completely normal.

Oh, and the smells from a hot 911, rubber, plastic, oil and whatever else they jammed in the back…. It’s like an orchestra for the senses

Bluehighways

Six hours is industry standard minimum for an engine to cool to the ambient temperature.

siberian

I'm moving the car into the living room come winter...

siberian

icanthelpit

been waiting to see how you handle this

siberian

Need to make sure I do this when TOWMBO isn't looking; I think the kids will be OK with it

siberian

icanthelpit

roger that!

Mr. Dolomite

Yep -- welcome to 911 territory! I typically wait at least 4 hours before placing the dust cover over my 911--in my garage.

r4mi5awi

Reviving an old thread from the dead as I couldn't find consensus.

Is there a cool down period we should be doing after a spirited drive to cool down the turbos? Is it no longer needed on the 992s and just turn engine off the second you're parked from a canyon run?

dudeoverthere

The cool down symphony reminds me of my motorcycle days. Good stuff.

Just turn it off. The fans will run until they stop.

It dips to 50F overnight at my house and the oil still reads low 90s when I fire it up at 6:30 in the morning.