In a message dated 12/3/01 10:36:44 AM Pacific Standard Time,
kaskas@earthlink.net writes:
<< Subj: Re: 6 cylinder pushrod length required
Date: 12/3/01 10:36:44 AM Pacific Standard Time
From: kaskas@earthlink.net (Kas Kastner)
To: WEmery7451@aol.com, GuyotLeonF@aol.com
CC: fot@autox.team.net
Shims under the rocker pedestals is okay until you mill a BUNCH off the head
like I did most of the time..then you can expect a change in change the
rocker geometry and the shims are working the wrong way with the wipe on the
stem being off center. >>
I noticed this effect on one of my early engines with 0.150" off of the head,
standard rods, and thick shims. During the last several years, I have been
using a head that started with 0.175" milled off of it, and probably has
0.185" off of it now. With this head, I have been using very thin shims -- I
would have to mic. them again.
With the Jack Wheeler popup Cosworth pistons, you use a head that is milled
0.150", and still mill some metal off of the flat portions of the piston
crowns.
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