Thanks for all of the comments. As always, they are extremely helpful.
Bud, I gave Carl (Stritz Machine in Oakland, CA) a call. He couldn't
have been more helpful. Apparently, going back to the early years of
unleaded gas, automotive machine shops were having problems with bronze
guides loosening up and sometimes dropping out. According to Carl, it
is mostly due to the bronze alloy and the gasoline changing that has
caused this problem not to have occurred for quite a while. Looks like
the shop I am dealing with had a very bad time way back.
I got my bronze guides from TRF and I believe that they are some of
Richard's. They look good and as always, Richard did a nice job. I
will be putting them in.
Thanks again, Jim
-----Original Message-----
From: RACER BUD [mailto:budscars@comcast.net]
Sent: Tuesday, February 17, 2009 2:23 PM
To: jim hearn; 'Friends of Triumph'
Subject: Re: [Fot] Bronze valve guides?
Hi jim..you might contact Carl Stirtz at Stirtz machine in Oakland...He
has
been doing this stuff for about 40 years..i think you've met Carl.(he's
got
the 2 formula juniors that i think you've seen at the track)...and he's
very
reasonable...he does my stuff..i just spoke to him, and he said that it
makes for tighter clearance in a race engine...he put them in
mine....they
don't last any longer..he used to put them in street engines when bad
gas
1st came out, but he doesn't anymore...he'd be glad to talk to you..Carl
Stirtz..510 536 2772..oakland ca.
Racer Bud
----- Original Message -----
From: "jim hearn" <jimhearn1@comcast.net>
To: "'Friends of Triumph'" <fot@autox.team.net>
Sent: Tuesday, February 17, 2009 1:54 PM
Subject: [Fot] Bronze valve guides?
>I thought I had seen on some posts that bronze valve guides were the
way to
> go with a TR6 so now that I need to do a complete valve job, I bought
> bronze
> guides to do it. When I took it to the machine shop (that has a good
rep
> for doing British stuff), I was told that they had quit putting in
bronze
> guides due to the extra heat in the combustion chamber caused by the
new
> fuel with no lead. They said that early on when they were using
bronze
> guides with the new fuel, due to dissimilar expansion rates for the
> different metals (head and guides), guides were loosing up and falling
> out.
> Has anyone heard this, experienced this, or have any information on
this.
> Is anyone running bronze guides successfully? Mine is a stock motor
but
> if
> this is true, there doesn't seem to be enough good points for the
bronze
> to
> risk the calamity. Any thoughts? Jim
>
> [demime 1.01d removed an attachment of type application/ms-tnef which
had
> a name of winmail.dat]
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