Need to idle down the Turbo on the SS?
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Need to idle down the Turbo on the SS?
I haven't had my head into forced induction in quite a while. Does the traditional advice of idling down the turbo before shutting down the engine, apply to the HHR? Anyone running a turbo timer?
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Joined: 04-03-2008
Posts: 1,434
From: A state of L N F Performance
Taken from a thread in the 2.0 Performance Section.
https://www.chevyhhr.net/forums/2-0l-performance-tech-46/turbo-maintenance-tips-16409/
Link to the thread.
We use these methods:
Even non-turbo cars benefit from #3...it's very sensible to let your engine and driveline stabilize a bit after severe use. Race cars take cool-down laps for this very reason
- In regular driving, no cool down needed.
- If you were JUST on the throttle hard, do not just come to a stop and turn the key off. Let the turbo speed stabilize and some of the temperature in it dissipate...idling for 30 seconds or so is all it takes.
- If you've been beating the car mercilessly, such as canyon-carving, track days or autocross, let it run a few minutes before you shut her down. You can even do this on a 'cool-down' lap...so long as you've been driving at cruising-type conditions for a minute or three, it has the same effect as letting her idle. Fact is, it's even a little better than idling, for the somewhat higher RPM helps move coolant and air through the turbo and engine more effectively, as well as air moving across the radiator and intercooler assist in the objective.
Even non-turbo cars benefit from #3...it's very sensible to let your engine and driveline stabilize a bit after severe use. Race cars take cool-down laps for this very reason
Link to the thread.
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