Re: Flywheel lightening - Saab Sonett Bulletin Board - Saabnet.com
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Re: Flywheel lightening
Posted by Andy in PDX (more from Andy in PDX) on Wed, 26 Sep 2001 21:26:12
In Reply to: Re: Flywheel lightening, Andy in PDX, Wed, 26 Sep 2001 21:13:31
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I have tuning specs for the V-4 from the old Competition Department. If you have a V-4, the factory specs for lightening the flywheel are: Turn the outside diameter to 9.645", leaving a supporting flange of .078" thickness behind the ring gear (the illustration shows that as the radius from the center of the flywheel, but that can't be right).
Note: The flywheel must be balanced after turning; maximum unbalance is .052 oz.
This is a Competition spec and I'm not sure that is suitable for street use where you tend to idle a lot more than with a competition car. Smoothness will suffer as the flywheel helps sustain engine inertia between plug firings.
posted by 207.225.9...
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