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29th January 2014, 03:26 PM
#1
Expert
Turbo - to cool down or not to cool down?
So do turbos need cooling down for a few minutes before turning off the motor after a long trip or do you just turn the motor off and walk away??
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29th January 2014 03:26 PM
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29th January 2014, 03:28 PM
#2
The 747
I don't switch off unless the pyro is under 150 deg
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Patrol-Guy (29th January 2014)
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29th January 2014, 03:38 PM
#3
Patrol God
Don't just turn it off after a long run, If you don't have an EGT gauge fitted and going on a trip and you have been sitting on 100kph.
when you get to your destination let it idle for a few minutes , this will allow temps to even out, and the exhaust temps to fall
If your just going to work unless you drive like Mario Andretti, by the time you grab your wallet, papers ,briefcase ,whatever should be enough time to let exhaust temps come down.
after all there is not rush, is there?
04 ST 3lt auto, not enough Mods to keep me happy, but getting there
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Patrol-Guy (29th January 2014)
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29th January 2014, 06:12 PM
#4
I am he, fear me
It's not so much the length of the run as the latent heat in the Turbo/Oil/Engine if it has been working hard.
If you fang it thru the 'burbs and screech into the driveway with EGT's up around 400 then it needs a decent cool down period.
If you drive 1,000 kilometres but the last few K's or so sedately and the EGT's are down then its OK to switch off immediately.
My rule of thumb is similar to Winnies...
If the Water Temp is around 87-89 deg AND the EGT is below 200 I'll switch mine straight off.
If the temps are higher then I'll select a suitable interval on the Turbo Timer or sit and monitor the temps are suitable before I switch off.
Dolphins are so smart that within a few weeks of captivity, they can train people to stand on the very edge of the pool and throw them fish.
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Family4x4 (21st February 2014), Patrol-Guy (29th January 2014)
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29th January 2014, 06:21 PM
#5
Hardcore
If you could see the turbo during a long run at speed at night, it would be cherry red, they need to cool a bit before shutdown IMO.
Cheers, the ferret.
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Patrol-Guy (29th January 2014)
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29th January 2014, 09:24 PM
#6
Administrator
Originally Posted by
Winnie
I don't switch off unless the pyro is under 150 deg
You used to say 200 degrees, are you getting more delicate these days...lol
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29th January 2014, 09:32 PM
#7
Originally Posted by
threedogs
Don't just turn it off after a long run, If you don't have an EGT gauge fitted and going on a trip and you have been sitting on 100kph.
when you get to your destination let it idle for a few minutes , this will allow temps to even out, and the exhaust temps to fall
If your just going to work unless you drive like Mario Andretti, by the time you grab your wallet, papers ,briefcase ,whatever should be enough time to let exhaust temps come down.
after all there is not rush, is there?
totally agree about the rush thing
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29th January 2014, 10:42 PM
#8
The 747
Originally Posted by
AB
You used to say 200 degrees, are you getting more delicate these days...lol
That was the old turbo haha. This is the new one that I paid for with my precious dollars so I want it to last. Hahaha
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30th January 2014, 08:06 AM
#9
Advanced
what are the side effects if you dont let it idle and cool down?
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Patrol-Guy (31st January 2014)
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30th January 2014, 08:30 AM
#10
Thea small layer of oil solidifies on the turbo/pipes (think a sort of cholesterol effect). Eventually the turbo can't be lubricated/cooled effectively.
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The Following User Says Thank You to P4trol For This Useful Post:
Patrol-Guy (31st January 2014)