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Old 06-20-2003, 07:19 PM
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Wink Wilwood Brake problems

I'm trying to bleed the brakes on my 57 chevy pro street car and can't seem to get any pressure at the rear calipers. The entire brake system is new including the lines. The front brakes are a disc conversion kit from CCI, that utilizes 68-72 GM A body parts (Master cylinder, calipers, rotors, etc..). They seem to bleed Ok and work fine. The rear are a complete Pro Street kit from Wilwood. They use the billet Dynalite 4 piston calipers.
Has anyone else had dificulty getting these brakes to work with a stock GM master cylinder?
Any input would be greatly appreciated.

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Old 06-21-2003, 04:51 PM
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Are you also using the proportioning valve from Wilwood?

Vince
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Old 06-21-2003, 05:07 PM
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Yes, I've tried bleeding the brakes with it open fully, half way and closed. I've been told that sometimes there labeled incorrectly. I get the same outcome no matter what.
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Old 06-21-2003, 07:50 PM
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I'm using the Wilwood 4 puck calipers on my '32 front and rear with a GM master cylinder. No problems. Have you checked to see that you are getting the fluid to the caliper? Break a line to see. Are you bleeding from the upper most bleeder? Wilwood's typically come with 2 bleeders so they can be mounted on either side of the car.
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Old 06-21-2003, 10:22 PM
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Sound like you dont have the bleed screw at the top? Air is still traped.
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Old 06-22-2003, 02:53 PM
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Actually they have 4 bleed screws but I am using the top ones, two per caliper.
I've even jacked the rear up so that the bleeders are pointing straight up.
I'm starting to look more towards the Master cylinder, thinking it isn't pushing enough pressure to the back calipers. It also is new.
I haven't given up yet.
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Old 06-24-2003, 07:00 PM
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Are you sure you have a 4-disc master cylinder? I understand they're different than even a disc/drum unit.
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Old 06-24-2003, 09:49 PM
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I've had the MC part number cross referenced and it comes up as a 67 -69 corvette HD MC. But it doesnt look like the old vette cylinders, so I'm buying a new one that I know is 4 wheel disc. It should arrive in the next few days.
I've been able to get a little bit of pedal by Pressure bleeding the system but I still need to pump the pedal to get good pressure.
Do you think a stock MC will work or do I need to get an aftermarket one that is known to be effective. I'm trying to stay away from too much more custom fitting.
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Old 06-25-2003, 09:40 AM
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Hey Pro, this is a little off the subject, but I have a set of Polished Dynalite calipers that I bought and never used (went with a Superlite set up instead). I was just wondering if you were interested.
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Old 06-25-2003, 09:48 AM
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Thanks for the offer, but my setup has zero miles and I'm trying to stop the money bleeding and just get it on the road. 40 grand and I haven't driven it an inch yet. If you know anyone selling the parking brake setup for the Wilwood brakes I might be interested.
Thanks Again!
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