Master Cylinder for Chev on eBay

[Phil Waterman]

Originally Posted by Mike Kelly

They were using brass here in the 1970's. ( a large brake company called BRELCO ) But with the aluminium alloy pistons used in some applications, weird electrolosis type stuff had them behaving oddly. They went over to stainless steel because of the problem. I had my MB Jeep cyls done in brass ..the machinist drilled through the bleed screw hole on a rear cyl. too much and into the opposite wall . It let go as I was coming down a steep driveway ..no brakes . I could have sued the idiots who did it .
Mike

Hi Mike

Did you make the turn at the bottom of the driveway or go up on the neighbors lawn.

You are right about the issues with brass and aluminum pistons the company that I've used to sleeve all my cylinders over the years was aware of the issue when I asked, response I got was that they are very particular about the actual alloy mix of there brass and also with its purity.

So far so good I've had no problems with pistons sticking or corrosion.