"where" the rotating mass is makes a big difference. physics class was a long time ago but it is a relatively simple equation to calculate the "work" or power being used to accelerate a rotating mass.
on a "typical" straight, what type of shifting are you doing vs. what type of acceleration?
for my ITB crx, i might get onto a long straight (mid-ohio or road atlanta) and accelerate from say 55 to 110 mph. and this would be while shifting from 3rd to 4th to 5th.
now the rotating mass on the wheels are only "accelerating" on a rotational basis once from 55 to 110 or doubling. but the rotating mass on the motor might be going from 4500 to 6500 rpm's three (3) different times.
i sort of think of this as a really good steak in a nice restaurant. i have paid nearly $50 for a 16 oz steak before, would i spend $50 to remove a pound of weight from the car? yes.
and although you can balance the flywheel, i would confirm the rules about surfacing it. look for lower weight pressure plates and clutches.
1985 CRX Si competed in Solo II: AS, CS, DS, GS
1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
1988 CRX Si competed in ITA & STL
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