Deenracing
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We have a 5-16 with J-mar disk break set up front and rear. Rear is reg stub not micro. We replaced the VW master cylinder with 81’ vw rabbit truck 22.8mm bore. Oddly enough bolted right up. When we bleed the breaks they work great lock up all 4. We can stand on the pedal after bleeding and get no pedal drop. While driving in the rough we loose pedal and have to pump it to get it to come up, but only in the rough. Graded roads, pavement sections, no problem. Only in the rough. We’ve contacted J-mar they gave us a few suggestions but have come up short. Looking for any theories or problematic issues others have experienced. Feel free to assume nothing but we feel we’ve gone over just about everything, new high quality break lines, etc. any help is greatly appreciated.
Thanks in advance.
Sent from my iPhone using race-deZert mobile app
Thanks in advance.
Sent from my iPhone using race-deZert mobile app