# I have no idea..

Posted by Jacob ('03 WRX) on October 08, 2003 at 23:39:07: In Reply to: Out of curiousity posted by MIKE on October 08, 2003 at 22:40:52: : You wouldn't happen to know or remember what was the size of your master cylinder in your 85 Z31 I am sure this could be answered on z31.com. My old writeup on the parts needed and the swap itself might even still be there, but this was a good 5 years ago. : I remember reading posts from 4th gen guys reporting a softer pedal after a Z32 caliper swap, this was after numerous brake fluid bleeding. : If your master cylinder in the 85 Z31 was larger than the Max (which is 15/16" or 1") this might explain "your" stopping performance Mebbe. It was all stock Z31 - I did use SS lines, but.. Seems like a good idea would be to compare MC bore sizes of the Z32 - anyone know this? I know the cars are mechanically dis-similar, but my comparison was mainly that - it was the same calipers stopping cars of similar weight - I even had Z32 N/A rims and 225/50-16 Dunlop SP8k's. I do remember being pretty impressed with the stopping power compared to the stock single piston floating calipers, but.. alas this was a few years ago so in all honesty my comments are probably worthless chit-chat. -Jacob Replys:

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: : You wouldn't happen to know or remember what was the size of your master cylinder in your 85 Z31 : I am sure this could be answered on z31.com. My old writeup on the parts needed and the swap itself might even still be there, but this was a good 5 years ago. : : I remember reading posts from 4th gen guys reporting a softer pedal after a Z32 caliper swap, this was after numerous brake fluid bleeding. : : If your master cylinder in the 85 Z31 was larger than the Max (which is 15/16" or 1") this might explain "your" stopping performance : Mebbe. It was all stock Z31 - I did use SS lines, but.. Seems like a good idea would be to compare MC bore sizes of the Z32 - anyone know this? I know the cars are mechanically dis-similar, but my comparison was mainly that - it was the same calipers stopping cars of similar weight - I even had Z32 N/A rims and 225/50-16 Dunlop SP8k's. : I do remember being pretty impressed with the stopping power compared to the stock single piston floating calipers, but.. alas this was a few years ago so in all honesty my comments are probably worthless chit-chat. : -Jacob