I have the upgrade tp 4 pistion calipers in my car, but I suspect I have the stock master cyclinder. My brakes take ALOT of pedal trave to stop. A recent thread brought it to my attention the master cylinder i have may not be enough to operate the brake calipers I now have.

So what other Master cylinders would work for the 4 piston brakes in my FC> ?
I have the MC from my FD when I swapped in a 929 MC, so coudl I put my FD master cylinder in the car?

 

u can modify the mazda 929 cylinder to fit
but b4 u do that bleed the line
i dont think the fd one will help much

 

I believe the TII MC will fit in the N/A.

 

TII master cylinder is not any different than N/A Sport Suspension car's master cylinder. 4 piston caliper hardware and suspension is all the same.