Another brake bleeding question - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

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post #1 of 16 (permalink) Old May 23rd, 10, 03:45 PM Thread Starter
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Ryan
 
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Location: Houston Tx
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Another brake bleeding question

I am about to throw the thing off a cliff...after replacing the trunk, floors, interior etc..I cannot get a solid brake pedal.

I installed a new booster, master cylinder, calipers, cylinders, all new hardware all the way around.

Got the system to bleed normally on all four corners, all the crappy fluid and bubbles gone.

With the car not running, pedal feels real spongy, with the car running pedal goes straight to the floor. Tried bleeding 3 times now (manual style) starting with pass rear, drivers rear, pass front, drivers front....three times with good results....but pedal still spongy.

I reused the plunger rod from the factory booster, bought the master cylinder at O'rielly Auto, as well as the calipers and cylinders.

The booster had an exceptionally long rod to the pedal, so I shortened about an 1"

with the car not running, you can pump and get a solid pedal, so clearly there is air in there somewhere?

Any good way to verify if the correct rod is being used? I cannot feel any play or anything like that?

Any feedback appreciated.

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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post #2 of 16 (permalink) Old May 23rd, 10, 04:14 PM
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Steiner
 
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Re: Another brake bleeding question

Did you bench bleed the master before you installed it?

'69 Camaro
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post #3 of 16 (permalink) Old May 23rd, 10, 05:22 PM
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Re: Another brake bleeding question

Quote:
Originally Posted by steiner View Post
did you bench bleed the master before you installed it?
x2

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post #4 of 16 (permalink) Old May 23rd, 10, 05:36 PM Thread Starter
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Ryan
 
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Re: Another brake bleeding question

Yes..actually I rigged up some fittings to run hoses back up to the reservior and bled mounted on the booster.

Is there a better way to do it?

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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post #5 of 16 (permalink) Old May 23rd, 10, 05:46 PM Thread Starter
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Ryan
 
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Re: Another brake bleeding question

Actually...I just read some sites on bench bleeding...seems to be that level is pretty important to get all the air out of the MC....I will try it again with the MC off the car.

Hopefully thats it

If you remove the cover you can see plenty of fluid movement, and flow is good to the bleeders at the corners...but the MC just sounds funny (some strange gurgling noises when you release the pedal)

I will be travelling this next week so it will have to wait.

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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post #6 of 16 (permalink) Old May 23rd, 10, 06:28 PM
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Re: Another brake bleeding question

I just did a 4 wheel disc conversion, the rear calipers were rotated (when installed)so that the bleeder was below the top of the piston chamber, (just slightly) but it was enough to trap air, so I had to remove them rotate them so the bleeder was up, rebleed the system , that was it.

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post #7 of 16 (permalink) Old May 23rd, 10, 06:32 PM
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Re: Another brake bleeding question

also, there are a couple types of master cylinders, some use the deep rod, others have a plug in them, when I put my kit in, I had to remove a 1" rod from the end of the master cylinder, the length of the pedal rod did not change, I don't think your pedal rod should have changed either.

69RS
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post #8 of 16 (permalink) Old May 23rd, 10, 07:47 PM Thread Starter
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Re: Another brake bleeding question

Quote:
Originally Posted by skip99 View Post
I just did a 4 wheel disc conversion, the rear calipers were rotated (when installed)so that the bleeder was below the top of the piston chamber, (just slightly) but it was enough to trap air, so I had to remove them rotate them so the bleeder was up, rebleed the system , that was it.
Actually...on the drivers side the bleeder is below the piston....darn Advance Auto stuff. (I did save the original calipers)

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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post #9 of 16 (permalink) Old May 23rd, 10, 09:20 PM
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bill
 
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Re: Another brake bleeding question

change that caliper out for the correct one.probally you got 2 left sides.
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post #10 of 16 (permalink) Old May 29th, 10, 08:03 AM Thread Starter
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Ryan
 
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Re: Another brake bleeding question

Well...replaced the caliper, bench bled the master cylinder again, re-bled the brakes again. The pedal was much firmer...but still very little braking power and pedal still goes to the floor.

The pedal is very firm not running, so I am inclined to think I have another problem besides air in the system.

I am getting so close to towing to a shop as I am sick of dealing with brakes...any other ideas are appreciated.

Replaced so far:
Master Cylinder
Calipers with all hardware and pads
Rotors
Hoses
Drums
Shoes
Cylinders
All new rear hardware
Brake Booster

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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post #11 of 16 (permalink) Old May 29th, 10, 10:50 AM
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Re: Another brake bleeding question

sent you a PM

69RS
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post #12 of 16 (permalink) Old May 29th, 10, 11:54 PM
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JAY
 
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Re: Another brake bleeding question

Jack up rear of cars as high as possible, let sit 24 hours. reblled and see what you got...worked on my 67 when I redid 90% of all brakes and couldn't get good pedal J


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66 SS Chevyll
67 Elcamino
68 Malibu 2dr
69 Camaro Convertible
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post #13 of 16 (permalink) Old May 30th, 10, 05:34 PM
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Re: Another brake bleeding question

dont rule out a bad "new" master cylinder. i cant tell you howmany reman's i've bought that were bad

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post #14 of 16 (permalink) Old May 30th, 10, 07:22 PM
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Re: Another brake bleeding question

all reman brake master cylinder, water pumps, and carbs aren't worth the boxes they come in.....never have been in the 45 years I ran automotive shops J


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67 Elcamino
68 Malibu 2dr
69 Camaro Convertible
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post #15 of 16 (permalink) Old May 30th, 10, 08:17 PM Thread Starter
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Re: Another brake bleeding question

Quote:
Originally Posted by JAYARTER View Post
all reman brake master cylinder, water pumps, and carbs aren't worth the boxes they come in.....never have been in the 45 years I ran automotive shops J
Good thing I kept the boxes then!!...where do you get master cylinders, water pumps then? Rebuild yourself or do you have a recommended source?

1969 X66
1964 Corvette 327/300
1998 SS Vert
1987 Regal


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