Trevor,
1) Slave leaking?
2) Wrong rebuild kit?
3) Bore is microscopically pitted? (Make up a little honing tool.)
Mike L.
60A,67E,59Bug
----- Original Message -----
From: Trevor Boicey <tboicey@brit.ca>
To: <mgs@autox.team.net>
Sent: November 9, 2000 10:22 PM
Subject: MGA/ZB Magnette master cylinder doesn't hold a rebuild
> When I first put my ZB Magnette on the road, I had
> to rebuild the combined master brake/clutch cylinder
> because the clutch was leaking internally. (car would start
> to creep if you held the clutch down, very dangerous
> when manoevering the car around the shop!)
>
> So I put a new rubber kit in the car, and it worked
> fine when installed. I haven't used the car in a month
> or so, but now it's slipping again.
>
> Talking to the previous owner, he had rebuilt the
> master cylinder not long before I got the car and
> never even got the car licensed. So the car has
> done about 100 miles on three clutch master
> rebuilds. Obviously, something is wrong.
>
> When rebuilding it the bore feels smooth and
> perfect, but I only gave it a quick feel around
> because at the time I didn't realize I was
> rebuilding a cylinder that was just rebuilt,
> I assumed I was pulling out decades-old rubber
> and it'd be fine.
>
> Is there a failure mode I don't know about? Or
> is there a way I can see if my bore needs resleeving
> or something? I guess that is the next step but
> it didn't seem to show any problems.
>
>
> --
> Trevor Boicey, P. Eng.
> Ottawa, Canada, tboicey@brit.ca
> ICQ #17432933 http://www.brit.ca/~tboicey/
> Waiting for Guffman.
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