23mm master cylinder, out of what??? Options

[stock93]

What car did the 23mm master cylinder that will bolt into our cars come out of?

John

[slivel]

I installed a 23mm M/C this winter and have one test day at Willow to evaluate the difference. Previously I was running a 19mm and always had too much pedal travel when the pads wore anything beyond about 75%. I would only have a good firm pedal after a new pad change. Calipers are Carrera front and SC rears so I was on that margin between the 19 being too smalll and the 23mm too large. After a couple of hours testing, I can modulate this combination of the 23mm and the Carrera/SC calipers OK, but its probably not for everyone. Pedal pressure is significantly higher. I plan to upgrade to Boxster fronts so this should bring the overall ratio into a more optimal range. My first race with this setup (23mm, Carrera/SC) is this coming weekend in Phoenix (if we don't get rained out). I let you know how it went.

BTW, I did install with the steel crossmember, but had to take off about 1/8 inch dimple with my grinder and and another 1/8 inch off the casting bump on the M/C. It fit but had me exercising my four letter word vocabulary. Not a fun job - the fluid supply lines were tricky to insert into the M/C. I loosened the crossmember and dropped it and the front suspension arms about 2 inches to get the M/C in.

Steve