Hey Gang,
Back a lifetime or two ago I hade a '63 E-type with
a trashed master cylinder. It came apart easily
enough but there was surface rust in the bore. To
address this I selected a dowel rod a couple
millimeters smaller diamtere than the bore and taped
onto it a length of paper towel. That was the
cussion. I then wrapped a length of 1000# emery
cloth. Both were taped to the dowell and wrapped the
same direction. I oiled this home-made tool up and
cleaned the bore rotating only in the direction of the
wrap while cycling the tool in and out. It took a few
oil cleanings and replacement cloths but the bore
polished up beautifully.
Was this high tech - or even recommended? Probably
not but it did make for a fine working master cylinder
without problems. Please remember that the seal is
rubber on steel, not steel on steel, so the bore needs
to be very smooth, but not necessarily of perfect
geometry.
Yea, I know. Someone is going to write, "And you
trust your LIFE to such a procedure?" The answer is
yes when I did the work. In fact, I'd probably trust
that further than some outfit that rebuilds these
things in their off time between Ford and Chevy jobs.
Advice is worth what you paid for it...
rick
--- "Dodd, Kelvin" <doddk@mossmotors.com> wrote:
> Roxter:
>
> Let us know how you get on and also the part number
> of the pliers if you
> find they work well.
>
> I've got 3 or 4 cylinders around and am willing to
> revise my opinion on
> rebuilding them if you get good results.
>
>
>
> Kelvin Dodd
>
> > -----Original Message-----
> > From:
> mgs-bounces+doddk=mossmotors.com@autox.team.net
> [mailto:mgs-
> > bounces+doddk=mossmotors.com@autox.team.net] On
> Behalf Of The Roxter
> > Sent: Thursday, August 23, 2007 10:02 AM
> > To: mgs@autox.team.net
> > Subject: Re: [Mgs] Advice wanted on MGB Brake
> Master Cylinder
> >
> > Bob Howard wrote:
> > > The washer-looking thing is a spacer made of a
> hard white plastic,
> > > Delrin, I believe. Its fit is snug in the bore
> and I don't believe
> you
> > > can get it to come out by banging it on a board;
> I could not do it.
> I
> > > drilled it and screwed in a self tap screw,
> which I could then hook
> and
> > > pull on to remove the spacer.
> > >
> >
> > Yes, I discovered that last night, did the same &
> it worked.
> > > These MCs are difficult to work on, and I
> have not been able to
> get
> > > them to not leak. Unless you fancy the challenge
> of it all, you
> might
> > > want to buy a new one and be done with the
> hassle.
> > I'm going to Sears today to buy the long-nosed
> circlip pliars. I will
> be
> > honing the bore before reassembling.
> >
> > -The Roxter
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