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MG MGA - 1500 Master Cylinder weeping

It has the "extended" top to the tank but seems to be weeping fluid around the bolts which secure it to the base. Anyone else had a similar experience ?
Roger Walker

You may need a new gasket. I made a new one for mine from some 1mm sheet rubber I had left over from lining a garden pond! .
The gasket material should go completely around the screws and it's easy to split this area so that brake fluid can travel up the screw and emerge at the head..................Mike
m.j. moore

Roger

Is it an original extension or a repro? I bought a repro and it weeped a bit. I found the mating face was imperfect. I flattened it on a sheet of glass lubricated with valve grinding paste.

Steve
Steve Gyles

You can also use a sheet of 400 wet n dry paper (coarser if you need initially) on a sheet of glass lubricated with WD40 to restore mating faces. Then a new gasket and your problem should be solved.
Mike
Mike Ellsmore

I wonder if the problem is the gasket material? Brake fluid is like diesel, it seeps where no other liquid can go. Have you tried cork?

Barry.
BM Gannon

Interesting comments folks - a bit more work needed - thanks.
R
Roger Walker

This thread was discussed between 26/02/2015 and 28/02/2015

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