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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Chris is right with the advice he received regarding water cooling and turbos applied to 911 motors, it is not required.
On most engines turbos are applied on short runner cast manifolds. It is the large heat sink these manifolds represent on shutdown that provides the thermal load requiring additional cooling. Since 911 based motors all run tubing manifolds these radiate their heat quickly so temps do not climb to unmanageable levels.
There is still the problem of coking during hot shutdown if the owner is still stuck in the dark ages and runs (burns) dyno oil. Turbos are not compatable with dyno oils period, never have been. The turbine end is too hot during operation and especially after shutdown.
No automotive turbocharger company will tell you this but it is a fact. As long as car companies tell their customers their engines can run dyno based oils , turbo companies will say their products will tolerate it also.

Last edited by copbait73; 05-19-2014 at 09:00 PM..
Old 05-19-2014, 08:56 PM
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