383

I blew one brake MC (stock 42000mi 07'Z06 ) at an A-X about a month ago. I figured it was from forgetting to turn comp mode off and powering through the abs. the pedal would fall to the floor with light pressure. When staging in line the pedal would just slowly drop to the floor.
I replaced with a new ACdelco and now 2 A-X's later the same thing...
Why?
The MC gets hot 165* but I dont know that is out of the norm for anything in the engine bay.
I run Motul RBF600 Carbotech XP10/8 and SS lines to stock calipers no leaks anywhere.
Why am I blowing these things on this car? Ive never blown one on any other car ever.
Is there an aftermarket upgrade? Im sick of bench bleeding and making a mess with $20 a bottle brake fluid.

383

http://www.amazon.com/gp/offer-listi...ef=olp_tab_all
This is what I got. Do you think that the Amazon one is different? Its $50+ cheaper

fcarga

Have you read this thread? https://www.corvetteforum.com/forums...s-acdelco.html

383

Yea only AFTER getting this POS. Should I try to rebuild the internals?

froggy47

I am not aware, in general, of any unusual problems with c5/6 master cylinders. My only guess based on what you offer so far, is you got a bad (second one) and the first just went as these sometimes do.

I have 60k on mine and hammer the abs at a couple events a month.

Knock on wood, no issues here. I'd try another oem/acdelco.



btw that does sound like a bad brake booster as opposed to master cylinder, they get leaks air/vacuum.

Google brake booster bad symptoms

383

It happens with the car off too. Last time I replaced the MC it went away completely then came back at an AX
ACdelco is warrantying it and Ill have the new one tomorrow