Newly Restored 509 Manual Brake Master Cylinder

[Patrick H.]

If the bore on yours isn’t rusted and pitted, it’s easy to do yourself. The only challenge is finding a quality rebuild kit.

[Kevin S.]

Hi Don,
The photos of the MC that I had rebuilt recently are from:

Brake Boosters
attn: Mike Gibbons
220 Machado Lane
San Luis Obispo, CA 93401

phone: (805) 441-5390

As you can see from the thread, I had to strip paint from some areas of the MC but overall I was happy with brakeboosters.com

[Donald O.]

If the bore on yours isn’t rusted and pitted, it’s easy to do yourself. The only challenge is finding a quality rebuild kit.

I have been unable to find a rebuild kit, quality or otherwise, for the 1” bore. All I’ve found are for the 1.125” bore.

Don

[Patrick H.]

I have been unable to find a rebuild kit, quality or otherwise, for the 1” bore. All I’ve found are for the 1.125” bore.

Don

You buy a replacement 1" bore MC and use the parts from it.