Date:         Wed, 7 Jul 2010 12:47:01 -0400
Reply-To:     Mike S <mikes@FLATSURFACE.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mike S <mikes@FLATSURFACE.COM>
Subject:      Re: Flywheel Dowel Pins - Continued
Comments: To: kgrotz@CRAFTECH.COM
In-Reply-To:  <53192.68.238.243.15.1278518473.squirrel@webmail.craftech.c om>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 12:01 PM 7/7/2010, Kurt Grotz wrote...
>I mean the flywheel gets 80 lbs and the clutch only 20 lbs at best?

That's because the flywheel bolts are M12 and the clutch bolts are M8.
For class 10.9, that would call for standard torque values of 83 and 24
ft-lbs. VW's specs are right in line with that.

The flywheel bolts are near the center and the clutch bolts are near
the outside - for the same torque, the clutch bolts are under much less
stress. Also, the clutch bolts only see 1/2 the full torque (from the
pressure place side of the clutch disc - the other side is the
flywheel). The flywheel bolts see all the torque.

The pins are to ensure everything is properly centered before bolting
it down, any imbalance will cause problems.