Depends on the car and the turbo.
First, many turbos are water cooled. They don't have any cool down
problems. Just shut the car down like a normal car.
Oil cooled turbo units, those can require a bit of a cool down, as well run
synthetic oil, it doesn't coke up the way regular dino oil does.
As for heat up and spool up, it takes place in just a few seconds. The
turbo kicks in with boost just pulling away from a stop sign. The harder
you romp it, the higher the boost and the higher the heat.
Generally speaking, sane driving for a minute or two before shutting down
will suffice with an oil cooled turbo.
----- Original Message -----
From: "Dan Kroninger" <d_kroninger@hotmail.com>
To: <gwishon@nd.edu>; "Shop Talk" <shop-talk@autox.team.net>
Sent: Wednesday, June 09, 2010 10:54 AM
Subject: Re: [Shop-talk] Premium for Turbos
> The "P.S." part is interesting. Prolonged boost would only occur from
> aggressive highway driving or street racing, correct. Normal usuage
> around
> town or highway cruising would not cause the the turbo to be running high
> boost levels. Am I correct in this thinking? I don't want to have to sit
> in
> a parking lot with the engine running for a few minutes everytime I drive
> the
> car. As I understood, the boost only kicks in as needed (aggressive
> accelleration).
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