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Re: Clutch overheating?


 

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I had the same problem some years back with my 23b while using a VW box. After about 5 laps, it did not like to change gears.? I changed and tried everything. The simple cure - new slave cylinder (overhaul kit did not work!). You would not have this problem with a hewland, as, with care, you can change?gears without a clutch, or the opposition knowing that you have a problem.
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Regards
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Eric Salomon
Cape Town, South Africa.

-----Original Message-----
From: silvenm [mailto:Nigel@...]
Sent: 2004-09-03 12:02
To: L23Registry@...
Subject: [L23Registry] Clutch overheating?

I wonder if others have the same problem I have. Twoards the end of a
days track use I start to get gear selection problems. The clutch
slave is a standard girling unit mounted as normal for a Hewland box.
It has a small heatshield but is only 5 inches from the exhaust
manifold. This gets very hot but also so are the resevoirs behind the
radiator. I am assuming that it is this heat that then causes my
clutch to start draging.

Do people duct the hot air from the radiator away from the reservoirs
(I also get some expansion in the brake system which I thionk is down
to this) and do you also provide some ducting in the rear. All I have
is the small opening behind the door to provide air into the rear. As
it only happens late in the day I'm not so bothered and with a
Hewland it's not an issue either but I'm running a Formula Vee syncro
box at the moment and this really does not like being forced when the
clutch does fully dissengage. In the rear I am also running a fairly
large silencer (Elise mk2 style)to meet noise restriction here and
that also creates a large ammount of stagnating hot air.

Is anyone running a slave cylinder integral to the release bearing?
How does that perform?

Any thoughts would be appreciated?

Best Regards
Nigel


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