For what it's worth the GT40 tappets can also be installed in a 6 cylinder
block but you need to have the tappet bores machined oversized to allow them
to fit. I can vouch for the bad tappets out there, BTDT.
Marty Sukey
-----Original Message-----
From: owner-triumphs@autox.team.net [mailto:owner-triumphs@autox.team.net]
On Behalf Of AMfoto1@aol.com
Sent: Friday, December 30, 2005 6:22 PM
To: triumphs@autox.team.net
Subject: Re: tappets
The latest and greatest replacement/upgrade tappets for the 4-cylinder
TR
motor are said to be GT40 with a specially fitted sleeve, available from
www.britishframeandengine.com here in the U.S. ( or www.racetorations.co.uk
in
England). Reports are these have consistently tested to be of high quality,
and
arewell proven in the cars. These tappets are said to be hard enough to hold
up
quite well themselves and yet not be too hard as to excessively wear the cam
flat in a very short time. I wonder if there might be some advantage to the
slightly smaller diameter, too (which is why sleeves are needed)? Used TR
camshafts and tappets I've seen over the years seem to show most damage,
besides
normal wear, as flaking or chipping at the edges of the cam lobes and/or
around
the rims of the tappet.
GT40 tappets are more expensive (largely due to the extra sleeve) and
for a modestly driven car there are likely some less expensive alternatives.
One
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