Does the engine actually get hotter after its off?
Thread Starter
Racer
Joined: May 2013
Posts: 297
Likes: 0
From: Stowe VT
Does the engine actually get hotter after its off?
After driving my 86 in 92 degree heat and made the long climb up my steep street , as i went to shut it off i noticed the temp gauge at 220,after a few min i turned the key to the aux position and the temp gague read 246 degrees. What im asking is are you just heat soaking the sending unit to the digital gauge or since there is no more coolant flow the engine actually IS getting hotter, but then again there is no combustion going on to increase temps. Sorry if my question was a little confusing.
Racer
Joined: Apr 2001
Posts: 433
Likes: 0
From: Gig Harbor WA
There are a lot of engine parts which are much hotter than the coolant. When you shut down, those parts transfer their heat to the surrounding parts and fluids. So, yup - your coolant does get hotter after shutdown.
Thread Starter
Racer
Joined: May 2013
Posts: 297
Likes: 0
From: Stowe VT
I was asking,because i was worried about head gasket damage. If i shut the engine down at 220 and in five min it climbs to 245 while off, is it the same as if the engine climbed to 245 while running?
Racer
Joined: Apr 2001
Posts: 433
Likes: 0
From: Gig Harbor WA
With turbocharged aircraft engines, they have a specified "cool down" period after landing before shutdown. They also prohibit pulling the engine back to idle suddenly to avoid "thermal shock" from sudden cooling.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
That temp level is normal in L98's -- after shutdown. Don't worry.
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