Date:         Thu, 8 Oct 1998 16:56:44 -0400
Reply-To:     DJD <dalwin@NETINC.CA>
Sender:       Vanagon Mailing List <Vanagon@vanagon.com>
From:         DJD <dalwin@NETINC.CA>
Subject:      Re: Engine Rebuild
Comments: To: Robert Lilley <vwvanman@MAILEXCITE.COM>
Comments: cc: Vanagon@VANAGON.COM
Content-Type: multipart/alternative;

You seem to have missed the point on Cut To Length Pushrods and Rocker
Arm Geometry. The idea is to have the shaft for theSwivelFoot Adjuster
perpendicular to the valve stem @ 50% lift. The shims move the center of
the SFA so that at 50% lift it is perpendicular and CENTERED OVER THE
VALVE STEM. This way the effort to operate the valves isn't excessively
high=more effective HP, and wear on the valve guides is reduced as the
valves aren't being pushed away at an excessive angle.
Either HotVW's or VW Trends recently had a good article on setting up
rocker arm geometry. Any time I've done any performance work (read: many
times!) involving ratio rockers, performance cams or compression
changes, you HAVE to correctly set the geometry or you'll have wasted
much money on a motor that isn't operating at it's peak potential.
Good luck, your motor sounds like it's going to be an awesome piece of
work.

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