[TR] [6pack] Clutch M/C Impact

[Bob Danielson]

Dick,
I've been searching through my old email because last year I traded emails
with list member, Mike Denman, who used a different M/C to get the lighter
clutch feel his wife wanted. I just found the email. Here it is:

"Herman said that several customers had already experimented with changing
the master cylinders and he had heard that they were happier with the final
result. With that information I contacted Apple Hydraulics (copy of the
actual email below). Lazar of Apple Hydraulics quickly responded with some
information to help me select the right master cylinder. I ordered and
installed the 5/8 bore master cylinder from an Austin Healey 3000 and am
very happy with it. The clutch pedal effort is reduced and the additional
movement required at the clutch pedal gives the engagement more "feel" and
is less abrupt. The installation of the new master cylinder looks exactly
like the original. Installation is no different that replacing a bad master
cylinder with a stock master cylinder. "

Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
http://tr6.danielsonfamily.org 


-----Original Message-----
From: Sally or Dick Taylor [mailto:tr6taylor at webtv.net] 
Sent: Sunday, March 02, 2008 3:43 PM
To: Bob Danielson
Cc: 'list Triumph'; 6pack at autox.team.net
Subject: Re: [6pack] Clutch M/C Impact

Bob---There is no reason why the .75 CMC wouldn't work with the hydraulic
t/o bearing and the 5 speed. We know that the (heavier
feel).75 bore pushes more fluid down the pipe, but this is not needed with
the hydraulic t/o. In fact, if one had a mind to, an even smaller than the
.70 bore would be nice. This would mean finding a CMC with such a bore, and
piping it in.

The hydraulic clutch setup only uses a partial clutch pedal depression to
release the clutch, and this is why there is a "pedal stop bolt" with
Herman's kit. A CMC with a smaller bore would mean a lighter clutch feel,
and with plenty of pedal to activate the clutch, this might be welcome for
some owner/drivers. 

I find that the .70 bore with the hydraulic clutch has a slightly lighter
feel than when the stock linkage was used to activate the clutch. Less pedal
drag from eliminating all of the linkage friction would be my guess as to
why that it.



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