10-08-2009, 08:50 AM
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#10 (permalink)
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A True Z Fanatic
Join Date: Nov 2008
Location: Columbus, OH
Posts: 1,940
Drives: Mag. Black 2009 370Z
Rep Power: 705
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Quote:
Originally Posted by kannibul
OK. Thanks for sharing.
So, cars come with a turbo-brake on them now to prevent them from burning the oil in the bearings?
I mean, most oils start to have issues around 400F. Exhaust temps are what, 1300F....
You shut off the engine, you lose all oil pressure. What's feeding the bearings to your turbo, that's still spinning...?
Compare that to a belt driven supercharger...you shut off the engine, the supercharger stops spinning.
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Turbo timers help prevent oil cooking issues with aftermarket turbos. Essentially, they allow your car to idle for a minute or less once you remove the key from the ignition. This keeps oil circulating through the engine and turbo to not only allow for any necessary lubrication of the spinning turbo, but to circle the oil throughout the engine to help cool it.
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