I'd say you're right as to the diagnosis. Rebuilding the clutch cylinder
is relatively simple (unlike the later brake MCs) so long as the bore
isn't rusty or pitted. Make sure you replace the hose as well.
Robert Berning had this to say:
>If I press the clutch in and hold it, it will start engaging and quickly
>fully engage the clutch. If I hold down the clutch and lift till it feel
>like it the clutch is engaged then press down again, the distance need for
>the clutch to engage decreases every time the petal is pushed to the floor.
>I would assume the fluid is leaking past the rubber seam, and not holding
>I am pretty sure this means my clutch master cylinder is bad. Could it be
>If it is the clutch master cylinder, should I try rebuilding it with a kit
>from Moss or just buy a new/rebuilt one from Moss? I would also
>change/rebuild the slave cylinder too.
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.