Quote Originally Posted by bksvo View Post
It is cast. Does that make any practical difference?
You might want to stick with the cast iron if weight or originality are not concerns.
I went through 2 in row of bad "remanufactured" aluminum master cylinders. The last one failed during the final elimination of the Sturgis Mustang Rally Autocross. That sucked!
Have had the cast iron one in ever since with no problems. A local rebuilder in town says they can re-sleeve the aluminum one. It'll be costly but I might do that eventually.