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Joined: Mar 2010
Posts: 25
Grease Monkey
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OP
Grease Monkey
Joined: Mar 2010
Posts: 25 |
Can anyone help me ID a master cylinder? I want to replace the master cylinder on my 38 Chevy. I have an extra cylinder with the following molded into it's side 5300967, 1'Dia.R-23, 3-12. Externally it looks identical to the cylinder on the car except for the size of screw-in end cap. The threaded part of the cap on my car is 1" diameter and the extra cylinder's is 1.25" diameter.
Thanks,
Fred Marc
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Its a 1937 master cyl. Its basically the same as a 1938 and in the later years they sold one M.C. that covered 1937-1939. There was a slight difference in the 1937 in the area the check valve (up in front) was arranged.
Gene Schneider
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Joined: Mar 2010
Posts: 25
Grease Monkey
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OP
Grease Monkey
Joined: Mar 2010
Posts: 25 |
Chevgene,
Do you by chance know where I can get at rebuild kit for the 1937 M.C.? I have one for a 1938 but, as you said, the valve end is differant. Tha screw-in plug on the 1938 is 1" dia. and has a raised knob on the inside that accepts a rubber washer. The valve rest against this rubber washer. The end plug for the 1937 M.C. is 1.25" dia. and is flat.
Thanks,
Fmarc
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Joined: Oct 2009
Posts: 1,294
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Oct 2009
Posts: 1,294 |
I just did mine yesterday, got the kit from Obsolete parts. there prices are good, and I got it in two days.
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Joined: Mar 2010
Posts: 25
Grease Monkey
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OP
Grease Monkey
Joined: Mar 2010
Posts: 25 |
Thanks. I looked at the kit on Obsolete's website and it looks just like the kit I have. It has a 1" dia. rubber washer and end cap sea. The master cylinder I have (supposedly a 1937) uses a 1.25" dia rubber disk instead of a washer and a 1.25" dia. end seal. Is your MC end cap 1.25" dia.? If so, how did you deal with this issue?
Thanks,
Fmarc
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