I bought a set of Z06 front caliper adapter brackets from Rudy a long time ago, and then slowly started collecting the rest of the parts I needed. When I had them all I removed the Hydroboost setup I had swapped in cause it never worked that well, (for whatever reason) and put my factory vacuum booster back in. Once I had everything assembled and bled, my brakes sucked...

I noticed that I could hear a slight vacuum whistle if I had my radio off so I figured my booster must be junk. I just swapped in a new vacuum booster and my brakes are still poor, maybe even slightly worse.

Has anyone else did the Z06 swap and had this much trouble? I've had some people tell me the caliper pistons are coming out crooked because my 15" Baer rotors are letting part of the brake pad hang over the edge and that I need 16" rotors. Other guys are telling me the change in caliper piston size is necessitating a master cylinder change as well. Help?

 

Unplug the brake boosters map sensor...report back

 

Tried with no positive results.

 

That sensor caused me to not have brakes worth a damn


But yes if you have to pump brakes to get a pedal you dont have enough volume from master

 

Update!

Finally swallowed my pride and took my truck to a mechanic. Not just any mechanic, one who has a 2JZ swapped Infiniti, and also a 2JZ powered T bucket roadster. Turned out it was as simple as a forgotten gasket between the master and booster! I'm so stupid... But the big bitch stops now!