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 Master Cylinder Identification

 Created by: fattogatto
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 Posted: Jul 15, 2017 07:55AM
Total posts: 9991
Last post: Sep 14, 2017
Member since:Dec 3, 2002
US
If you can't post photos, use the SEARCH feature to find the master cylinder and post the part number.

 Posted: Jul 15, 2017 07:26AM
Total posts: 36
Last post: Sep 12, 2017
Member since:Mar 13, 2017
Yes, that is the Lockheed one that is referenced on the interweb, at various locations, as both the clutch and the brake master cylinder. The other one simply has DELCO stamped on it and the reservoir is completely round, with no ridges.

 Posted: Jul 14, 2017 11:16AM
Total posts: 13276
Last post: Sep 19, 2017
Member since:Jan 22, 2003
CA
I believe your LB37HJ010A is the newer style plastic clutch master
looks like this?
http://www.minimania.com/part/GMC1008/Classic-Austin-Mini-Clutch-Master-Cylinder-All-Years-Plastic-Reservoir

 

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 Posted: Jul 14, 2017 08:54AM
Total posts: 9991
Last post: Sep 14, 2017
Member since:Dec 3, 2002
US
Photos, if possible, please.

 Posted: Jul 14, 2017 07:08AM
Total posts: 36
Last post: Sep 12, 2017
Member since:Mar 13, 2017
I received two new master cylinders with the car I bought. One is marked with Lockheed LB37HJ010A on the resevoir. A search indicates this is used either for the brakes or clutch master cylinder. It has a ridged rectangular reservoir with the steel insert on the side of the actual cylinder. The other cylinder is simply stamped DELCO on the body of the cylinder. There are no other markings or numbers. This one has a round reservoir. Both master cylinders fit either mounting boss.

Can anyone shed light as to the bores and whether it matters which is used in what system?

Thanks,