how long do you wait for turbo to cool down?
09-27-2005, 06:44 PM
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how long do you wait for turbo to cool down?
and do you only do it after driving hard? I do a lot of around town driving - below 3K rpm, do I really need to sit there after every stop or can I just shut it off?
09-28-2005, 02:54 AM
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Re: how long do you wait for turbo to cool down?
Remember, any time spent pulling into the parking lot, navigating down side streets, coasting down an off-ramp, pulling into the rest area, or parallel parking, etc., all counts toward cooldown.
What you don't want to do is pull off the road and immediately shut off the motor with a glowing turbo. BAD, BAD, BAD!
In practice, there aren't many cases where you actually have to sit in the car and "wait."
What you don't want to do is pull off the road and immediately shut off the motor with a glowing turbo. BAD, BAD, BAD!
In practice, there aren't many cases where you actually have to sit in the car and "wait."
09-28-2005, 01:51 PM
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dont think so, i just saw a couple B6ers with turbo timers at the Hartford GTG...I always let the
car idle for 15-30 secs after driving...sometimes a little more if I'm on the highway pushing it.
09-28-2005, 01:57 PM
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yeh it takes me a minute or so to pull into my garage (opening up the door and such)
so I wont be needed the turbo timer...I thought maybe they piping got better so it wont fri the turbo...guess not...
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09-29-2005, 06:36 PM
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when pushing the car hard, the turbo creates boost, which heats up the turbo fairly
quickly. When it gets really hot, you can see the turbo glowing red when looking at it under the hood.
So when it's very hot and you shut off the car immediately, since the turbo depends on oil circulation to cool it, the oil will sit there on the hot turbo "cooking" there and baking onto the turbo which is not good. This reduces the life of the turbo because it gets clogged up with "cooked" oil pretty much and circulation is not at it's best.
so when pushing it right up before you get where you're going, let the turbo "cool" down by letting the oil circulate for a minute or two to let the temps back down then u can safely shut off the car.
a good way to eliminate this if you don't have the patience to wait or just don't want to, don't hit heavy amounts of boost. Drive conservatively so that the turbo won't spool up much, if at all. This way, the turbo isn't super hot and won't have oil cooked on it when shutting off the car.
I usually give it 10 to 20 seconds (if not pushing it) after stopping and letting the oil circulate for those few seconds. Guess better piece of mind for me.
So when it's very hot and you shut off the car immediately, since the turbo depends on oil circulation to cool it, the oil will sit there on the hot turbo "cooking" there and baking onto the turbo which is not good. This reduces the life of the turbo because it gets clogged up with "cooked" oil pretty much and circulation is not at it's best.
so when pushing it right up before you get where you're going, let the turbo "cool" down by letting the oil circulate for a minute or two to let the temps back down then u can safely shut off the car.
a good way to eliminate this if you don't have the patience to wait or just don't want to, don't hit heavy amounts of boost. Drive conservatively so that the turbo won't spool up much, if at all. This way, the turbo isn't super hot and won't have oil cooked on it when shutting off the car.
I usually give it 10 to 20 seconds (if not pushing it) after stopping and letting the oil circulate for those few seconds. Guess better piece of mind for me.
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