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The brakes

Forum: C3 Engines, Driveline and Handling

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The brakes

Posted: 9/14/08 5:43pmMessage 1 of 11
s
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Central Islip, NY - USA
Joined: 5/9/2005
Posts: 120
Vette(s): 1976 stingray, 350 C.I. 325HP 4 speed, t-tops white.
Good news and bad news.  Just got home a while ago from a wonderful weekend trip to NH.  Drove via Conn, Vermont, NH then on to Mass and back home tonight which was a total of 750 mile, GREATCool.  The bad news, when I got to NH and off the exit, no brakesShocked good thing no one was in front of me.  Stopped at the local NPA and picked up some brake fluid to add and guess what, it did not need any.  So you know I was on pins and needles for the entire weekend and when I left this morning, what do you know, it was rainingdoh.  So the trip home was a little roughphew, but I made it without incident.  I guess I will have to bleed the brakes next weekend or if anyone else have any further info on this problem. 
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The brakes

Posted: 9/14/08 6:41pmMessage 2 of 11
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!
What did you do to get the brakes back?
How did they act after that?
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The brakes

Posted: 9/14/08 6:52pmMessage 3 of 11
s
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Central Islip, NY - USA
Joined: 5/9/2005
Posts: 120
Vette(s): 1976 stingray, 350 C.I. 325HP 4 speed, t-tops white.
Ken I pumped it a couple of times and the light went off, but it was still soft.  
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The brakes

Posted: 9/15/08 4:35amMessage 4 of 11
B
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Frederick, MD - USA
Joined: 2/20/2003
Posts: 555
Vette(s): Frederick County Corvette Club (Maryland) Tan 64 365 Hp Conv 4 sp Red 72 4 sp Conv ..running a '68 327 Blue 76 Coupe L 48 4 sp White 79 Coupe L 82 auto Silver 98 Conv, 6 sp 35th Anniv '88 vette
I carry a bleeder wrench in all my C3's all the time...along with a bottle of oil and brake fluid...

EVERY spring I have to bleed the brakes ..but at home I use a pressure bleeder...in fact the 79 is on the lift right now so I can check the calibers.. one(if not more)  is/are sucking air big time...

Have no idea how you drove it all those miles...I had a heck of a time moving the the 79 from one garage to the other to get it on the lift... there is a slight difference in NO brakes and BAD Brakes...

Bob G



Bob
64,72 & 98 Corvette Ragtops
76 & 79 & qa 88 ANC Corvette Coupes

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The brakes

Posted: 9/15/08 8:54amMessage 5 of 11
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Woodland, WA - USA
Joined: 10/14/2003
Posts: 1171
Vette(s): 1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion
It sounds like you need to check the rotor runout. I had this problem that I had to bleed my brakes about every 500 mi. They would get mushy, the brake light would come on indicating the proportional valve would set and I would only have front brakes. I had to get a dial indicator, place it up to the brake rotors to measure the runout. I used pieces of a beer can for shims behind the rotor. excesive rotor runout out causes the calipers to suckin air over a period of time. if this seems to fit your problem I could email an article on this subject.
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The brakes

Posted: 9/15/08 5:55pmMessage 6 of 11
s
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Central Islip, NY - USA
Joined: 5/9/2005
Posts: 120
Vette(s): 1976 stingray, 350 C.I. 325HP 4 speed, t-tops white.
Thanks for the info, I will check them all out and Bob, my e-mail is listed thanks.
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The brakes

Posted: 9/16/08 8:14amMessage 7 of 11
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BINGHAMTON, NY - USA
Joined: 7/19/2003
Posts: 3825
Vette(s): ......
Used pieces of a beer can for shims,thats pretty high tech,does it matter if it's lite beer or regular Rolling%20On%20The%20Floor%20Laughing

C3VR Lifetime Member #93

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The brakes

Posted: 9/16/08 10:57amMessage 8 of 11
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Woodland, WA - USA
Joined: 10/14/2003
Posts: 1171
Vette(s): 1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion
If your racing you use lite, I just cruise so I used regular
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The brakes

Posted: 9/16/08 5:17pmMessage 9 of 11
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!
Yep, sounds like you need to bleed them.  And check rotor runout.
 
If the rotors are out, or if not, be sure to use a torque wrench to tighten the wheels.  The largers cause of warped rotors is uneven wheel torque.
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The brakes

Posted: 9/16/08 5:33pmMessage 10 of 11
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Central Islip, NY - USA
Joined: 5/9/2005
Posts: 120
Vette(s): 1976 stingray, 350 C.I. 325HP 4 speed, t-tops white.
Will do and thanks.
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