[Fot] use of BRONZE GUIDES

[Jim Gray]

I use bronze guides from BFE and clearance them to .003 - .004 with no
issues. The ones from British Frame & E are rounded on one end to help 
fuel/air & exhaust flow. I don't have problems with bronze guides
with the proper clearance. 
So, with iron guides can/should we run tighter clearances?

Jim g

-----Original Message-----
From: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] On
Behalf Of Alexandre Camoletti
Sent: Friday, November 04, 2011 10:48 AM
To: n197tr4 at cs.com; Gt6steve at aol.com; Gregmogdoc at surfnetusa.com;
fot at autox.team.net
Subject: Re: [Fot] use of BRONZE GUIDES

Moss sells in Europe aluminium-bronze guides in their TT range.
Clearance is 0.0035'' according to TR Enterprises in the UK, they use these.
Fitted in my (Tr3) head and reamed to 0.0033'', engine still on the bench so
no ROE (return of experience).
Any thoughts/comments?
Thank you and cheers!
Alex

-----Message d'origine-----
De : fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] De la
part de n197tr4 at cs.com
Envoyi : vendredi 4 novembre 2011 16:05
@ : Gt6steve at aol.com; Gregmogdoc at surfnetusa.com; fot at autox.team.net
Objet : [Fot] use of BRONZE GUIDES

 Outstanding posts on this subject.

Thank you everyone.

RISK MANAGEMENT.....with the information made available, so far,  folks can
make a more intelligent decision about who they have do their heads and be
able to ask better questions.

Thanks again....keep the comments coming.   It's good to see the FOT LIST
alive and well.

It might be good to know the trusted source of the best bronze guides.

Joe A



-----Original Message-----
From: Gt6steve <Gt6steve at aol.com>
To: Gregmogdoc <Gregmogdoc at surfnetusa.com>; fot <fot at autox.team.net>;
n197tr4 <n197tr4 at cs.com>
Sent: Fri, Nov 4, 2011 9:23 am
Subject: Re: [Fot] Zinc Additive.  now use of BRONZE GUIDES



I was about to make a post very similar to Greg's posting.  I explored this
with my trusted machinist after watching several instances of stuck valves
in
TR4 heads.  He explained that it was the silicon-bronze guides that were
causing all the trouble and recommended going to the manganese-bronze as
Greg has stated.  I've had no issues with that advice.  Knock on Wood ;-))
Steve



In a message dated 11/3/2011 3:37:17 P.M. Pacific Daylight Time,
Gregmogdoc at surfnetusa.com writes:
We have   found that Manganese-Bronze guides have greater "lubricity"
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