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Re: [Fot] Hardened & Ground washers for cyl. head & rocker post nuts

To: "'Tim Murphy'" <timmurph@fastbytes.com>, "'FOT'"
Subject: Re: [Fot] Hardened & Ground washers for cyl. head & rocker post nuts
From: "Jack Brooks" <jibjib@att.net>
Date: Tue, 8 Jul 2008 20:08:56 -0700
Tim,

Ken G. has hardened washers, as well as double height nuts for heads, so the
loading on each thread is lessened.

Jack 

-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of Tim Murphy
Sent: Tuesday, July 08, 2008 5:04 PM
To: 'FOT'
Cc: Ryan Murphy; Ryan Murphy (work)
Subject: [Fot] Hardened & Ground washers for cyl. head & rocker post nuts

I'm looking for hardened and ground washers for the cylinder head nuts and
the rocker stud nuts.  Been reading Carroll Smith's book on fasteners and he
makes sense to use these washers in this application, especially the
cylinder head which has spot faced locations for the washers.  I have washer
from Moss but they all are "crushed" and obviously not very hard.  (Checked
with a file and they are just plain washers as far as I can tell, the right
size though,
almost.)  On the rocker studs, I had used double Gr. 8 washers and they
still got "dished" into the rocker pedestal holes.  I'm wondering if some of
the rocker pedestal stud breakage is from not having a good hardened and
ground washer under the nut and the nut loosing it's tension and/or bending
causing the breakage that has been reported.  This has probably been
discussed and maybe everyone is already using these type of washers.  I'm
still pretty new at this and still have a lot to learn.

Would appreciate anyone who has a source for these type of washers in the
size needed.  Did the usual Google thing and haven't come up with a supplier
who would sell just 20 or so.

Thanks,
Tim
1961 TR4 #317
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