The Saab Link Forums - View Single Post - spec clutch & flywheels
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Old 07-02-2012, 09:44 AM   #14
mike saunders
 
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Join Date: Mar 2004
Location: Boston, MA
Posts: 6,468
Heavier flywheel = more rotating mass = more drivetrain loss = slower time to build speed. A heavy flywheel would help if you revved the crap out of the car during a standing start, but the additional mass likely puts additional stress on the clutch.

The major immediate downside to a lightened flywheel is the mental and physical adjustment that the driver needs to make to compensate for the difference in clutch engagement. I stalled out a few times when I made the switch...
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