[DeTomaso] Rep. Kit for stock brakes

[JDeRyke at aol.com]

In a message dated 11/21/08 5:44:42 AM, torbjorn.harlem at elverhoy.no writes:

> Anybody with a good idea to buy repair kit for my stock .71 brakes?   
> Piston and house in very good condition but the gaskets and rubber seal (?) has 
> drying out.
> 
What exactly is leaking? All the U.S vendors sell reasonably priced caliper 
overhaul kits front & back, but to fix a leaking brake master cylinder is 
complicated. Years ago, someone exceeded their talents in fixing things and crashed 
shortly after a brake repair. So Bendix-Italia now only sells the entire new 
master cylinder attached to a new vacuum booster. Parts of our brake systems 
were made by Girling and the rights were sold to someone in England decades 
ago. The caliper pistons as you probably know are nickel plated mild steel. Not 
changing brake fluid yearly allows absorbed water to rust under the piston's 
plating, causing pits. And it takes a very close visual check to decide if a 
leak is from a pitted caliper piston or a dried out, cracked seal ring. A 
surprisingly small piston pit will fail a new seal, and no OEM pistons are available. 
This is also a real problem for Porsche and many other European cars, all of 
whom use mild steel pistons in their calipers. It's not difficult to fabricate 
new pistons from stainless steel bar stock, but no one does this 
commercially, likely due to liability. Good luck- J Deryke


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