Craig,
Early engines fitted to cars up to commission number CC32142 and CP26998
were fitted with long nose crankshafts which had the much lighter flywheel
as fitted to your car. Moss UK state that between 5 and 9 lb can be removed
depending on which flywheel is fitted. 4lb as recommended by Kastner would
appear to be your best bet. What else are you planning to do to your engine?
Derek Graham
CP54529-O
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
Behalf Of Cregg Cowan
Sent: 09 January 2001 22:34
To: 6pack@autox.team.net
Cc: cowan@erg.sri.com
Subject: flywheel weight and how much to remove
Hi,
From lurking on triumphs-digest@autox.team.net for a while (I just joined
this group) I got the idea to lighten my flywheel while working on my
clutch.
I had read that 18 pounds was a good target, and that about 10 pounds of
metal would need to be removed (wow, that's a lot). However, when I took
my flywheel to the machine shop yesterday it only weighed about 21
pounds. It is from an early TR6 engine (CC29630HE) and shows no signs of
being lightened before. There happened to be a late engine in the shop for
comparison --- it's flywheel weighed about 26 pounds. Does this make
sense? Or was the scale very inaccurate?
In any case, what is a good target weight for an early flywheel for a
street driven car? Kastner's Competition Preparation Manual says
approximately four pounds can be removed, which would be about 17 pounds.
This is assuming that the manual, which was published in 1968, refers to
the early engine.
Whaddayathink?
TIA,
Cregg Cowan
Mountain View, California
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