For those of you running any kind of BBK, especially front and rear, has anybody experienced any loss of pedal pressure, possibly due to blown seals in the master cylinder? I completely lost my brakes on the way home from work last week, and the mc res is practically empty. It was a gradual loss over maybe a dozen or so red lights, and I'm 99% sure I didn't hit anything that would break a line. I did a visual inspection of the car when I got home and saw no obvious leaks at the hoses or bleeders, but it's been too freakin' cold to get the car up and give it a thorough probing.

I'm thinking that the added feedback pressure from the BBK, combine with SS hoses and a Stillen mc brace, may have been too much for the internal piston seals of the factory mc, and the fluid is now sitting in the booster. I installed the BBK late last summer and have been driving it ever since, so I'm reasonably sure it's not something like a loose hose.

Any thoughts or similar experiences?

Oh, and anyone considering a rear BBK that eliminates the parking brake, I wouldn't suggest it. Those little drums saved my life.

 

Do you have an authentic Wilwood BBK or do you have a kit that was pieced by some vendor using Wilwood parts?

 

The install of the BBK won't have a serious effect on the pressure use or requirements. So far...from what you describe...if it's mc related that problem could have arisen even with the stock brakes.

 

my mechanic has told me ive had a bad MC since the day i got my car... He says he can feel it in the pedal loss.. I have stock non brembo's on an 03... I lost my brakes as well once but somehow i broke a brakepad and blew a ring in my caliper.... he still said its my MC but ive had the same one for 60k miles now and i dont notice it.... Also he is one of my best friends so i know hes not just trying to get my $$$$$