I’m rebuilding brakes as part of a partial resto. Car is a 1964 E-type Series 1, 3.8L, Moss box / non-synchro 1st.
I removed the two brake master cylinders, and pulled them apart. One contains a typical Series 1 piston and related parts. The other contains something similar, but a different configuration. Possibly from a Series 2? I just don’t know, but the brakes have worked fine for the last 25+ years.
The rebuild kits seem to be universal, and contain enough seals and cups for either configuration. I’m tempted to just put in the new bits and be done with it, but would probably be happier with matching Series 1 pistons. Am I over-analyzing, or should I start looking for someone with a rebuildable Series 1 piston. Thanks!
Just for grins, I’m including pics showing the source of a little clutch pedal play. Hahaa!
It is very important to have the ovaled hole part of the clutch clevis fork welded up and the position of the pin put back on the right side of the oval or else your clutch risks not disengaging all the way. This can mean you can wear out your synchro hubs in a few thousand miles or less.
The one on the left is definitely wrong. On my 64, one piston is long and one is short but they have identical types and seals. The length is why the castings have different part numbers. I forget which is which. I’m sure the archives have that info. I have no idea if the 3.8 seal kit would work on that left hand piston assembly.
Have you examined that casting closely? I wonder if it’s an aftermarket assembly. It can’t be from any E-type because once they went to the 4.2, the entire master changed to the big Lockheed. If you can figure out whether the original one you do have is the front or back maybe you can find the other original kind on Ebay or from one of the usuals. Meanwhile you might have to buy a new replacement for it unless you can figure out what kind of seals you need for that oddball.
