04-08-2013, 04:33 PM
Join Date: Mar 2010
Total Cats: 42
Poor Braking w/ new calipers and pads, firm pedal
It is a 92 with 94+ brackets and rotors,
-Porterfield R4S all around
-All brand new stock style calipers
-brand new master
-Wilwood proportioning valve (have tried various settings)
-Firm pedal no excess travel
-brake booster has vacuum upon running engine, turning off and then pulling check valve hose.
Stopping isn't great, little to no "bite" and was like this before changing all of the above, WTH? I can only imagine something is still bound up or there isnt enough vacuum getting to the booster after initial press of the brake??? The flex lines are stock, can they really expand enough to cause this kind of problem?