Flywheel pin information for KH motor

[JShadzi at aol.com]

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Eric, I think the key here is that "heavier isn't better",a but the right
weight flywheel will definitely wake up the motor.  I've run 11lb alum flywheels,
the car is still very driveable, revs noticeably faster in lower gears (which
is really nice is 2nd and 3rd, 1st doesn't really need to be any faster),
turbo spoolup isn't noticeably different.  Some who've said they've removed about
3lbs from the outside of the flywheel are definitely on the right track too,
the factory definitely went overboard with the weight of the flywheel on these
cars.

Javad

In a message dated 8/6/2003 11:39:48 AM Pacific Standard Time,
eric_audi.ql at mindspring.com writes:

> Yes I understand that every bit of inertia robs torque during acceralation.
>  I have never driven a turbo motor with lightened flywheels so you are
> correct I am working on theory in that regard. I have driven wild NA cars with
> aluminum flywheels and multi-disk small diameter clutches.  One accelerated so
> quick you had to leave your hand on the shift lever until you were in 3rd gear
> or you would slam the 9000 rpm readline.  VERY fun, but I think I would last
> about 1 day before I was in jail with that particular car.
>
> My point with the street turbo is the extra inertia of a stock flywheel,
> although not idea, does have a nice side effect of spooling the turbo faster.  I
> am curious to those 4kqt owners out there with lightened flywheels.  From a
> rolling start of say 1500 rpm do you build full boost in first gear?  Javad I
> may be way off base as the wieght of the car may still be plenty to build
> boost with the low gears.  The 4kq is a lot heavier than other things I have
> built in the past.
>
> I do agree the JT flywheel certainly is a pig though.  Todd I got the same
> weight when I measured the flywheel.  I got another 13 lbs for the clutch and
> flywheel (on my $6 bathroom scale).  Worst of all a lot of the wieght is at
> the rim.  Worst of all my crank rang up at 60 lbs.
>
> Back on the original topic does anyone have ideas on the diameter of the
> pin?  Luke said about 3/4" long.  I think I will just use what I have available
> for diameter since the sensor is just looking for a transient.  I just don't
> have any 5k parts to reference.
>
>
> Thanks
> Eric