I just installed a reman 929 Brake Master Cylinder sourced from Malloy Mazda this past weekend. I swapped the reservoir from my oem mc. Now that I have everything installed, I notice a large amount of brake fluid leaking from the rear most seal where the reservoir connects to the 929 master cylinder.

How can I fix this? New rubber seals? Or do I need to swap this for another one?

 

I think I had the same problem.
https://www.rx7club.com/suspension-wheels-tires-brakes-20/issue-installing-929-master-cylinder-701526/

 

Thanks gracer7-rx7, I've come to notice that you've helped me more than once!

I'll try swapping my old oem's MC bushings into this 929 one. It's comforting to know that I'm not the only one with this problem!

 

FWIW, I just zip tied mine and left it. It eventually stopped.

 

I'm in the garage now. It seems that swapping the bushings from the oem fd mc works. The rear (slave side) bushing on the 929 is shorter. Prolly means the tip on the canister is tangling

 

When I looked around, there were a few people with this problem. I installed the 929 MC recently and used to FD bushings - no leaks.

Jack