I think there is a mistake in the identification of the part that causes the
difference. The alloy bell housings are cast identically to the steel ones
so that should not make a difference.
That said, there typically is a difference in thickness of the alloy
flywheel as opposed to the steel ones. Of course it depends entirely on
which alloy flywheel we are talking about. The one I got from Ted is
definitely thicker than the stock steel flywheel.
Joe C.
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of Herald948@aol.com
Sent: Saturday, November 15, 2008 10:11 AM
To: gaf3@charter.net; mark@bradakis.com
Cc: fot@autox.team.net
Subject: Re: [Fot] Was Weber carbs now SU Questions now Spit Clutch Release
Questions
In a message dated 11/15/2008 10:10:28 A.M. Eastern Standard Time,
gaf3@charter.net writes:
Ted Schumacher mentioned that the aluminum bell housing uses a different
release bearing sleeve. Does anyone know how to tell the difference??
==AM==
I don't have any MkIV or 1500 parts books handy, but I do have them for the
earlier cars. From what I can tell, both the throwout bearing sleeve and
"clutch disengaging lever sleeve" carry different part numbers between
early
Spitfire (coil spring clutch) and later Mk2 and beyond (diaphragm clutch).
Also, from what I can tell, the diaphragm clutch uses the 7/8" bore slave
cylinder. How to tell the levers and sleeves apart, I don't know (unless
there
are part numbers on them); sorry!
As for the alloy bellhousing, I don't think that matters in regard to
clutch
action...except possibly that there are a couple variants of the alloy
bellhousing. There's one with a rather thin flange as used on Herald 948 and
earlier 1200 models, and there's one with a thicker flange as used on
earlier
Spitfires (but which should be usable on any three-rail gearbox, AFAIK). I
don't
know offhand if there's a difference in overall depth between those two
bellhousings...but I can measure if anyone really cares! ;-)
--Andy Mace
*Mrs Irrelevant: Oh, is it a jet?
*Man: Well, no ... It's not so much of a jet, it's more your, er, Triumph
Herald engine with wings.
-- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
Triumph 10 / Herald / Sports 6 vehicle consultant, The Vintage Triumph
Register: _http://www.vtr.org_ (http://www.vtr.org/)
Check out the North American Triumph Sports 6 (Vitesse 6) and Triumph
Herald
Database: _http://triumph-herald.us_ (http://triumph-herald.us/)
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