Thread: Spongy Brakes
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Old 08-22-2013, 10:54 AM
Apogee Apogee is offline
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Quote:
Originally Posted by usa-69z View Post
This is the conumdrum.... some are saying it is,, others are telling me 7/8 is what i should be running? is there a difinitive answer?
I wouldn't do anything with respect to the master cylinder until you have the rear calipers set up properly, since that's more than likely exacerbating any perceived volumetric issues that you may or may not be experiencing. The rear pads should be virtually snug up against the rotors, but not tight. See link below.

http://www.pro-touring.com/cars-gene...rs-101288.html

While there are definitive answers with respect to MC sizing, your system should work, albeit with a somewhat longer pedal travel than some would like. If I were making a recommendation for your system from scratch, I would suggest a 15/16" bore unit for manual brakes with a 6:1 pedal ratio. That said, there is only a ~12% difference between that and a 7/8" or 1" bore unit and it sounds like your pedal travel issue is greater than 12%, making me believe you primarily have a rear caliper installation issue.

Tobin
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