[JohnC]

I have about 100 miles on a master cylinder that I bought about 2 years ago. I recently pulled it off to install a set of headers and found about a teaspoon of dark brake fluid pooled in the little rubber cup that seals the power booster (goes between the master cylinder and booster). I don't think any fluid got inside of the booster, but I am disturbed by this. Do I need a new master cylinder? If so, from what cars can I get a late model aluminum master cyclinder? Thanks

 

[JohnC]

Forgot this info: The car is a 67 Malibu with disks in front, drums in back.

 

[73Malibu]

Were you already using the AL cyllander??
Sounds like the rear seal on the master is FUBAR. Any of the 80's cars would have the right unit. Do you have a seperate proportioning valve ? Some of the newer cars had intergral MC/PV units. The rebuild MC for my 73 was $15 for a lifetime warr rebuilt. not worth getting from Junkyard

Frank

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