My original master cylinder got lost some years back. About 12 years back I purchased one on e-bay. It's the disc brake "US" type. Anything I can look at to determine if it's an original of a reproduction? Thank you, Joe
Compare the US stamp, from what I remember the U was not the same on the originals VS the reproductions.
If not mistaken it was Narrower and taller on the repro.
Thank you. I'll have to find a known original to compare...Joe
I was under the impression that the reproduction castings all had the same 'cast date' on the side??
I don't recall seeing a date code where it should be...Joe
Here's mine. Oct 68 10B
Quote from: x66 714 on April 06, 2021, 07:58:23 AM
I don't recall seeing a date code where it should be...Joe
The 'cast date' on a Delco MC is on the opposite side from the casting number, and it's in the form of a 'day of the year'...
Joe, post some pics of what you got,
Doc
Here's a few pictures. I might need to take it off as the camera flash makes it too much. Thank you, Joe
Mine master looks like it's stamped directly on the cylinder casting, not a machined surface?
My original "US" master cylinder with a julian "239" date code for 239th day of '68 on a 10A build.
Quote from: jdv69z on April 08, 2021, 08:29:43 AM
Mine master looks like it's stamped directly on the cylinder casting, not a machined surface?
It was a machined pad originally but rust got to it. Your stamp is consistent with mine and we are about 1 week apart.