2Shea
Member
Hello. New to the forum and working on a friends 70 Superbee 383 magnum.August/69 build date. This was originally a drum/drum car. We've installed Wilwood front rotors and 4 piston calipers. A PB8536-2 booster with a Raybestos 36283 M/C. I also installed a Wilwood adjustable brake proportioning valve just downstream from the distribution block on the framerail.
We've been unable to get this car out of the shop due to a rock hard pedal.
I've bled the system. Strong stream at the front calipers...decent at the rears.
I've checked the vacuum hose at the booster and blew into the check valve and that's working fine.
Initially the brake pedal was extremely high so after looking at a friends 69 satellite I noted that his pedal was a lot lower.
I drilled another hole in the pedal 1" lower and that appeared to make it worse.
Now, there's conflicting data on the net as to the MBM kit numbers. There is also a PB8536-1 and that shows it's for the 66-69 while the 70 and up take the -2 kit. On other sites it shows the -1 fits the 66-70.
Does anyone know what the difference is between the -1 and the -2 kits?
It almost appears that maybe the pin in the front is too long and has already pushed in on the bore piston once it is tightened up??
Is the push rod out the rear of the boosters different?
We're at a loss here...any help would be appreciated. Thanks.....John
We've been unable to get this car out of the shop due to a rock hard pedal.
I've bled the system. Strong stream at the front calipers...decent at the rears.
I've checked the vacuum hose at the booster and blew into the check valve and that's working fine.
Initially the brake pedal was extremely high so after looking at a friends 69 satellite I noted that his pedal was a lot lower.
I drilled another hole in the pedal 1" lower and that appeared to make it worse.
Now, there's conflicting data on the net as to the MBM kit numbers. There is also a PB8536-1 and that shows it's for the 66-69 while the 70 and up take the -2 kit. On other sites it shows the -1 fits the 66-70.
Does anyone know what the difference is between the -1 and the -2 kits?
It almost appears that maybe the pin in the front is too long and has already pushed in on the bore piston once it is tightened up??
Is the push rod out the rear of the boosters different?
We're at a loss here...any help would be appreciated. Thanks.....John
aboard!
