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Re: Pushing Gears
Posted by Stephen Goldberger (more from Stephen Goldberger) on Tue, 31 Oct 2000 11:11:19
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

>... As long as the tachometer doesn't hit the 5000 rpm
>red zone (and it never goes much over 3500 rpm, actually), is this
>considered well within the performance parameters of the car? Can I push it
>even further? Or would I be shortening the turbo engine's life?

The infamous Frank Freeman (proprietor of the now defunct Group 6 -
supplier of Saab Performance Accessories for many years) once said that
'the hardest thing you will do in life is wear out one of those little
Swedish motors'.  The case for higher rpm operation being beneficial is
that the oil pressure is higher, and more oil gets splashed up on the
cylinder walls.  The higher engine speed also increases the strength of the
film of oil in the bearings.  

You are not going to damage the engine by driving it in the manner you have
described.  Engines are damaged by poor maintenance (excessive oil change
intervals, coolant change intervals, overheating, etc.), running them hard
before the engine is near operating temperatures, or (for the turbos)
reving the engine just before shutting off the key or as soon as it starts.
Stephen Goldberger, Editor and Publisher
NINES, the magazine of the SAAB Club of North America
vist our web site at http://www.saabclub.com

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