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Author Topic:   brake problem
Pickel
Member
posted July 27, 2003 10:06 PM
I need some suggestions on fixing a brake problem. Four wheel disc brakes, small calibers on the front and big calibers on the rear. Same size lines front and rear. I put a brand new master cyclinder on, changed all the rubber lines, and even put spacers on the rear calibers and I'm still losing petal. If I pump it two or three times I have a petal but as soon as I let it sit for a few seconds I have nothing. Bled the lines several times. I've pinched off the rubber line from the frame to the rearend and I have full petal. I've done everything I can do to get brakes. Any suggestions would be greatly appreciated. Thanks Pickel


SLEEPY GOMEZ
Member
posted July 27, 2003 10:32 PM
Hi Pickel, The key for me was when you said master cylinder. 4 wheel disc need a dual m/c setup. A single m/c probably needs a 1 3/16 inch m/c and this precludes any race m/c I have ever found. Front discs and rear drums will work on a 7/8 - 15/16 inch m/c. Hope this helps. SLEEPY


factory58
Member
posted July 28, 2003 08:25 AM
had almost the same problem had big gm calipers on the front and even bigger ford factory calipers on the back.changed the big back calipers to the small metric and it solved the problem.got good solid pedal now.



Pickel
Member
posted August 02, 2003 10:16 AM
I found my problum.. I found out that ther is a differents on the big gm calipers...the one for the cars are 1/4 inch smaller (where the piston is ) then the truck .. I put the car ones on and had full pedle.. jus thout evey one would like to know..thanks for the help..


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