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Old 09-20-2010, 04:49 PM
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What To Fix?

Hey forum, thanks for previous help,

Regarding my brakes on my 75 Camaro, this is whats happening:

the brake pedal will lose its pressure, and press all of the way into the floor.
In terms of actually braking, my brakes feel OK, and stops OK with no squeeling- so I am not sure what the connection is between the pedal issue and how well my car brakes.

Master cylinder fluid is full and has not leaked, but maybe it's a hose or some problem with the pressure somewhere?

This car was in an accident, and I actually have a brake and light inspection coming up. The pedal may have started doing this after the accident.

Thanks so much for any help!

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Old 09-20-2010, 05:38 PM
richard stewart 3rd's Avatar
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Hi,
I think you need a new master cylinder.
Rich
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Old 09-20-2010, 05:40 PM
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I have to agree, master cylinder.
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Old 09-20-2010, 05:46 PM
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X2 sounds like the M/C to me also.


Cole
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Old 09-21-2010, 09:32 AM
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X4, it's the M/C. If the internal seals are worn, you won't lose any fluid, it will just bypass the seals as you press on the pedal.
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Old 09-21-2010, 09:03 PM
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so...

thanks for the responses, and you guys were right on. I did some research and it is the MC for sure.
My next question would be about the quality of a new MC: is there much performance difference between, say, a stock replacement versus a performance MC like from Billet that costs more? I am swapping a new 350 engine in with maybe 330 HP in a few months, (FYI) my car is a factory inline 6 car now.

Thanks again!

Jes
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Old 09-22-2010, 06:39 AM
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A stock, but NEW, not rebuilt will work just fine assuming that you have the original brake system on the car. Changing MC types can end up getting you into other potential difficulties such as capacities (bore size), fit up (bolting to the firewall or booster), fluid line configuration (new lines).

And another thing you absolutely need to do is to flush the lines and cylinders with either lots of brake fluid or alcohol then brake fluid. Personally, with a 35 year old car, I would do a complete restoration with either a total caliper/cylinder rebuild or replacement and if the brake lines show significant external corrosion, replace them as well. They are available from companies like Inline Tube http://www.inlinetube.com/Preformed%...s/ocatalog.htm

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