CCX3057 Brake Master Cylinder Question

kbutler971 · #1 (**permalink**) 09-25-2008, 02:58 AM

Hi:

I'm looking to replace the brake master cylinder on CCX3057, as its leaking slightly at the actuator piston seal area :-(. In looking at my installation it differs significantly from my CCX manual (circa 1987).

I've attached a photo, does this look familiar to anyone out there? Other than some numbers cast into the body, there don't appear to be any other identifiers. I'm weighing my options on replacement in kind or a replacement of the entire pedal assembly, and I'd prefer the former first to just get things stopped safely before tackling something more complicated.

All that being said, I had some tuning work done on the motor (built 428, valve adjustment, carb, distributor) this week to get a baseline for a later dyno tuning run. This helped immeasurably, as before this my '02 Audi TT with 300+ hp was marginally faster than the Cobra. At the sugggestion of the tuners, I removed the air filter (way too small) for a brief test and WHOOOOOOOHOOOOO! did that ever wake things up, especially over 4000rpm. Very high on the smile-o-meter, and now I can see what all the excitement is over the perfromance of these cars. New air filter, here we come.

It also highlighted how important the brakes are. Any assistance on identifying my brake master cylinder wold be very much appreciated.

Thanks in advance.

Kirk

Shelboss · #2 (**permalink**) 10-03-2008, 06:13 PM

I can tell you that it is not the VW super beetle master cylinder listed in my assembly manual, that has a remote reservoir and metric threads. Are there any Lucas markings on it? Can you identify the threads to see if it is english, european, or american? What make components were used in the rest of the braking and pedal assembly?

kbutler971 · #3 (**permalink**) 10-04-2008, 05:52 AM

Hi:

Thanks for the note. I pretty well ruled out anything VW, and I did like Jeff's idea on the Wilwood. Pretty easy swap ,and Tilton has one as well.

I've been looking at alot of M/C on ebay and the closest I've seen are early '80's Mazda RX-7 and GLC units with 13/16" (20mm) piston diameter. In anyone has any other ideas/suggestions I'm open.

Not sure, but what I have installed in my car (whole clutch/brake pedal assy) looks to be non-CCX. Functional, but not the best ergonomics. Pedals seem real close to the floor for my size 91/2 feet. My first thoughts were to just get a copycat M/C which isn't leaking out through the shaft seal and go from there in relative safety, but what I'm really thinking of is a redo of everything as an integrated system. I want to take a good look at what I currently have (again, non-original CCX but good stuff) before chucking the lot. Something about not throwing the baby out with the bathwater.

What I really liked was Jeff's installation of the floor mounted pedal assy. Well engineered/super fabrication, works good, looks good, and one heck of a lot better than what I currently have.

Thanks again for the suggestion.

Kirk

Shelboss · #4 (**permalink**) 10-08-2008, 10:24 AM

Just as a reference point, my Miata gas pedal is 5", brake is 6" and clutch is 7" to the floor from the bottom of the pedals with about 3" tall pads. Floor mount pedals are closest to the original, but not used in modern cars for various reasons. Jeff may be willing to part with his old pedal assembly as another option