69 camaro 4 wheel disc brake problem - Team Camaro Tech
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post #1 of 10 (permalink) Old Jun 21st, 08, 03:30 PM Thread Starter
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Keel
 
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69 camaro 4 wheel disc brake problem

I have installed a 4 wheel disk brake kit on my 69. I've already bled the MC but have no pedal. I tried another MC and got the same results. I replace the kit distribution block with my factory block and still no pedal. Any ideas??????

I am running a one piece rear brake line with none of the factory valves (Subframe hold off valve , proportioning valve) because I was told that this kit didn't reqiuire it.

No fluid is leaking anywhere. Thanks Team Camaro.
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post #2 of 10 (permalink) Old Jun 21st, 08, 04:44 PM
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Re: 69 camaro 4 wheel disc brake problem

Did you bench bleed the master? If not give it a try, because you will never get all the air out of the master if you try to start bleeding with it in the car, and you might never get any air out either.

By the way, your problem seems different then the other no pedal issue being discussed right now.
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post #3 of 10 (permalink) Old Jun 21st, 08, 05:39 PM Thread Starter
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Keel
 
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Re: 69 camaro 4 wheel disc brake problem

I bled the MC using the hose kit that comes with it. How do you bench bleed one? Thanks
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post #4 of 10 (permalink) Old Jun 21st, 08, 07:00 PM
Bob
 
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Re: 69 camaro 4 wheel disc brake problem

Was the kit for staggered shocks, or straight?


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post #5 of 10 (permalink) Old Jun 21st, 08, 08:12 PM
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Re: 69 camaro 4 wheel disc brake problem

Quote:
Originally Posted by keeljc View Post
I bled the MC using the hose kit that comes with it. How do you bench bleed one? Thanks
Clamp it in a vise with the short hoses on and push the piston with a screwdriver until no more bubbles come out (the ends of the hoses need to be submerged in the fluid.

You need to do this because the ports inside the master are to the rear, and (particularly power brake systems) mount the booster nose up. The air gets trapped in the front of the cylinder in the booster.

Bleeding an all new system can take CONSIDERABLE time and effort. I used a mitivac on mine, after running 2 quarts thru, I started recycling the stuff. It took at least a gallon, maybe more to get any pedal at all. There are a lot of high spots in the lines that can trap air. Tapping on things is a good way to dislodge tiny bubbles, too.

Absolutely do the rears first, and keep at it until you get good pressure. If you give up and do the fronts first, you might never et the rears.





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post #6 of 10 (permalink) Old Jun 22nd, 08, 08:24 AM Thread Starter
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Keel
 
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Re: 69 camaro 4 wheel disc brake problem

The kit was for staggered shocks. Thanks Jim. I'll try it and let you know.
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post #7 of 10 (permalink) Old Jun 22nd, 08, 10:24 AM
Bob
 
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Re: 69 camaro 4 wheel disc brake problem

Quote:
Originally Posted by keeljc View Post
The kit was for staggered shocks. Thanks Jim. I'll try it and let you know.
Thanks....ok, did it have two of the same rear calipers so that the bleeders face up? The reason I ask is that we had a guy mount his caliper upside down,bleeders down, and the caliper held air,resulting in a bad pedal.


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post #8 of 10 (permalink) Old Jun 22nd, 08, 02:13 PM Thread Starter
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Keel
 
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Re: 69 camaro 4 wheel disc brake problem

The bleeders are face up.
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post #9 of 10 (permalink) Old Jun 22nd, 08, 04:20 PM
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Re: 69 camaro 4 wheel disc brake problem

I am having problems getting the air out of the DB conversion kit from CPP Classic Performance Products, Inc. It is my 69 Camaro. I bench bleed the master cyl. I have bleed them in a jar filled with brake fluid at lease 15 times. It show no air but then when I let off the pedal and them push down they go to the floor and I keep rebleed and am getting air. I think it is a bad mastercylinder. I also mounted the rear disc the way the directions said. The bleeder is on the side at the top. Need help. I have bleed 100 cars and never had this problem.
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post #10 of 10 (permalink) Old Jun 22nd, 08, 05:39 PM Thread Starter
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Keel
 
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Re: 69 camaro 4 wheel disc brake problem

I am going to leave open the passenger rear bleeder to see if gravity will pull the fluid to the back. I'll let you know.
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