I've tried every manner possible and after running then in the dyno I think
that grinding the thing flush gave the best results. BUT, very difficult to
really see any power difference. I have been lead down the garden path so
many times with flow bench numbers I don't believe any of them now.
Experience will cover the testing. If you do a head job a couple times a
year then I think that is the way. You do remove part of the support for
the valve so if you do not pay attention to valve gear and replace stuff in
a reasonable time fashion then, I recommend making the top of the guide into
a cone and then put them in after the porting job.
--------------------------------------------------
From: "Jim Gray" <toodamnfunky@comcast.net>
Sent: Tuesday, November 02, 2010 2:13 PM
To: "Friends of triumph" <fot@autox.team.net>
Subject: [Fot] TR4 Valve guide shape
> FoT
>
> I'm looking for opinions on how to treat the valve guides as
>
> they are in the intake and exhaust runners.
>
> I've seen bullet shaped guides and heard of guides shaved flush with
>
> port wall.
>
> Input is appreciated as always,
>
>
>
> Jim G
> _______________________________________________
> fot@autox.team.net
>
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>
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