From digest.v6.n719 Sun Jun 1 22:18:24 1997
From: Jeff Krause <m5jeff_at_driversedge.com>
Date: Sun, 01 Jun 1997 16:58:37 -0400
Subject: Re: rotational inertia
My brother-in-law-to-be is a physics whiz, and we just did some napkin
math on an E30 M3 flywheel. The stock wheel is 19lbs. If you reduce this
to 14lbs, not only will the engine speed up much quicker for
doublecluthing, but in first gear it gives the equivalent of 22 HP!
In second it's only about 8 HP, but I wasn't looking for power, I was
looking for quickness in the gear change.
As it turns out, an '84 318i flywheel is, you guessed it, 14 lbs, and
will bolt right into an M3. I just got one, and I'll let the list know
when I get it installed and what it's like.
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