Funny you should mention that. I was reading the TR6 prep manual just an
hour or so ago and wondering the same thing about my PAECO head. What was
the original thickness of a "late model" head?
John Price
-----Original Message-----
From: WEmery7451@aol.com <WEmery7451@aol.com>
To: unv@psu.edu <unv@psu.edu>; WEmery7451@aol.com <WEmery7451@aol.com>;
HRPrentCo@aol.com <HRPrentCo@aol.com>
Cc: fot@autox.team.net <fot@autox.team.net>
Date: Thursday, May 03, 2001 9:33 PM
Subject: Re: how much off of the head
>In a message dated 5/3/01 3:54:15 AM Pacific Daylight Time, unv@psu.edu
>writes:
>
><< Subj: how much off of the head
> Date: 5/3/01 3:54:15 AM Pacific Daylight Time
> From: unv@psu.edu (Dan Styduhar)
> To: WEmery7451@aol.com, HRPrentCo@aol.com
>
> Hi Bill and Hardy,
>
> I need some help. I am having a TR4 and TR4A engine rebuilt.
> I am going to have .090 taken off of each head per Kastner's
> street prep recommendations. The shop I am having do the work wants to
> know how they can tell if any material has already been taken off of the
> head. What can I tell them to measure to check this. I sure would
appreciate
> your help.
>
> Work on the plaque has come to a stand still. I have been very busy but
> I should be getting them done sometime this summer.
>
> Yours in Triumph
> TS25801L
> Dan Styduhar
> >>
>
>Hi Dan,
>
>It has been a long time. My racing efforts have not been progressing very
>well, since I have been forced into doing everything except what I want to
be
>doing -- working on the car. I hope to make a few races later this summer.
>
>I briefly tried to do some measurements with a poor depth gage and skills,
>without taking time to clean off all of the carbon. We are leaving for a
>wedding in Delaware tomorrow.
>
>A 0.125" thick aluminum bar was laid across the engine heads, and the
>following approximate measurements were obtained:
>
> Head with approximately 0.180" removed to be used with flat crown
>pistons: 0.570"
>
> Tabor Head with 0.150" removed to be used with popup pistons:
> 0.587"
>
> Old grease head from the shelf, assumed to be stock:
> 0.730"
>
>You would subtract 0.125" from the above measurements.
>
>If you are using the copper head gasket and not the steel shim gasket, this
>exact measurement shouldn't be too critical. You still might have to shim
up
>the rocker pedestal or use shorter push rods.
>
>I am copying your message to the FOT membership in case someone has the
exact
>measurements, or can forward some information from the archives on this
>subject.
>
>I appreciate the help that you have given me in the past while trying to
race
>at the Ledges, and the racing Triumph videos that you have made.
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