Ken,
Here is an email I posted to the list a while back. It has a comment
from Michael Salter as well.
John P. New
-----Forwarded Message-----
From: Michael Salter <msalter@precisionsportscar.com>
To: 'John New' <jnew@hazelden.ca>, healeys@autox.team.net
Subject: RE: Valve Adjustments
Date: Sat, 03 Aug 2002 15:29:12 -0400
Hi John,
Your sleuthing is correct.
The adjusting screw is not a standard bolt because it has a ball on one
end, a reduced diameter slot in the other end and is hollow to permit
oil to be fed to the ball end, but the nut is a 3/8" NF thread thin nut.
Michael Salter
www.precisionsportscar.com
-----Original Message-----
From: owner-healeys@autox.team.net [mailto:owner-healeys@autox.team.net]
On Behalf Of John New
Sent: 3-Aug-02 2:41 PM
To: John P. New
Cc: Healey-List
Subject: Re: Valve Adjustments
With some more investigation on my part, I may have answered my own
question.
According to my parts manual, the rocker arm adjusting screw is not a
standard bolt, and thus it can't be referenced to a UNF/UNC bolt code (I
don't think). But then I thought, there is a locking nut that goes onto
that screw that might be a standard nut.
Sure enough, the parts manual specifies the nut as FNN 206, which,
according to Anderson/Moment p. 186, is a plain, non-lock type nut
(FNN), lock nut (half thickness) and normal strength (2), 3/8" screw
diameter (06). Ignoring the apparent contradiction between the FNN and 2
designations, the table on p. 184 states a 3/8" shank diameter UNF
thread has 24 threads per inch! Of course I am assuming that the screw
has a UNF (not UNC) thread.
Anyone care to comment on my brilliant sleuthing abilities? :-)
John P. New
London, Ontario, Canada
67 BJ8
On Tue, 2004-04-20 at 13:33, Freese, Ken wrote:
> Does anyone happen to know the thread pitch on the 3000 valve adjusting
> screws? I want to try my Feelz it tool again.
> Ken Freese
> 65 3000
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