HELP with Dual Master Cylinder Brake Upgrade Kit for '65 Corvette
06-11-2005, 09:40 PM
#1
Heel & Toe
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HELP with Dual Master Cylinder Brake Upgrade Kit for '65 Corvette
Kit included 2 lines & 2 blocks required to use Master Cylinder; plus 1967 Master Cylinder which I have installed. All new brake hoses; bled calipers in the order of right front, left front, right rear and left rear; Made sure no air bubbles; break pedal approximately half-way to floor; real firm pedal; opened front caliper and bled line to check if I would have rear brakes; pedal went completely to the floor - no rear brakes. rebled front brakes; have approximately half brake pedal; holding brake pedal down, can't move either front wheel; but rear wheel with slight effort; can be turned. Any suggestions would be GREATLY appreciated.
06-12-2005, 12:24 AM
#2
Safety Car
Originally Posted by bobbywells
bled calipers in the order of right front, left front, right rear and left rear;
Did you bench bled the master cylinder? Looks like you still may have some air in the rear system.
06-12-2005, 07:57 AM
#3
Racer
Oupps
Wrong bleeding order. 
The correct way is R-rear, L-rear, R-front, L-front, in that order. In doing so, most of the air will expell from the longest line ( R-Rear ) first, and make the others less prone to keep air in the lines
The easiesy and saftest way is by gravity. Hook up a hose to each nipple, and while keeping an eye on the master, leave them open ( only one at a time ) till the liquide comes out clear, without any bubbles. Done correcty, you can bleed a complete system, without even once having to pump the pedal.
Stepinwolf
The correct way is R-rear, L-rear, R-front, L-front, in that order. In doing so, most of the air will expell from the longest line ( R-Rear ) first, and make the others less prone to keep air in the lines
The easiesy and saftest way is by gravity. Hook up a hose to each nipple, and while keeping an eye on the master, leave them open ( only one at a time ) till the liquide comes out clear, without any bubbles. Done correcty, you can bleed a complete system, without even once having to pump the pedal.
Stepinwolf
06-12-2005, 09:06 AM
#4
Race Director
Stepinwolf with a "dual" master is it still necessary to bleed as if you had a single as you state???
Seems like you do still have air in the system though... As stated you may have to bench bleed the master... Dave..
Seems like you do still have air in the system though... As stated you may have to bench bleed the master... Dave..
06-12-2005, 11:17 AM
#5
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If you don't bench-bleed the master cylinder first, you'll never get the trapped air out of the cylinder bore. 
06-12-2005, 11:34 AM
#6
Race Director
John do you still need to bleed in the order you would with the original MC? I would have thought since there are two seperate systems that it would not matter.... Thanks.. Dave.
