Master Cylinder for Chev on eBay

[Mike K]

Originally Posted by Phil Waterman

Hi Dave

Then sent the original cylinders (I saved them) out and had them all sleeved in brass.

Cheers Phil

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

[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.

[Mike K]

Originally Posted by Phil Waterman

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.

Phil,

Like you ,I had no problem with sticking pistons , and the Jeep was laid up for long periods too, but never had any problems. The episode with the brakes: I managed to stop by steering sideways into the high stone side wall beside the driveway. It was rather steep but I scraped along the wall and it just managed to stop the Jeep - damaging the rear corner panels in the process. The scary thing was, at driveways end, there was a 8 feet drop into a rock garden.The hole in the cylinder was tiny , the size of a pin head, but it was still enough to lose all pressure in the system. A friend attempted to repair the cyl., he silver soldered the hole over , but that cyl. was never useable again, the heat distorted the brass somehow and the piston wouldn't fit back in.
Mike