Re: Turbo cool down

Posted by Jon Hagen on March 21, 2006 at 22:07:17 from (69.26.29.68):

In Reply to: Turbo cool down posted by NC Wayne on March 21, 2006 at 21:31:01:

There is a bit more to it than just letting the turbo spool down at idle. You might see Exhaust gas temp of 500-600 at no load idle,but at full rpm and load,exhaust gas temp is more likely to be 900-1200 degrees (red hot)which will coke up the bearing/seals with burned oil if you shut it down under those conditions. The oil does not coke up on a running engine because new cool oil is constantly being pumped through the bearing.

If you let the engine idle untill the exhaust gas which is in the 500-600 degree range has cooled the exhaust turbine and housing to that temp,the turbo lube oil will not burn and coke up the bearing.

Replies:

• Re: Turbo cool down Old Pokey 06:27:39 03/22/06 (0)
• Re: Turbo cool down Bobcat 04:57:19 03/22/06 (1)
  • Re: Turbo cool down Harley 13:01:49 03/22/06 (0)

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