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Old 10-11-2010, 02:40 PM
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Brake Booster Trouble..

I'm having this weird problem with my new brake booster. It makes a weird creaking sound when the brakes are applied. It also is a little sticky.
It is defiantly not the pedal linkage.. When I disconnect the clevis, the pedal swings just fine..

My Poncho has a big cam, I wonder if it's the gas fumes getting into the rubber diaphragm. The old booster did the same thing...

This one has me stumped. I'm ready to remove the booster all together and run manual brakes.. I already have the 6:1 manual brake pedal installed due to low vacuum..

Any thoughts?
Thanks..

Checkout the videos..
http://www.youtube.com/watch?v=JvPzQ-lbENU

http://www.youtube.com/watch?v=mmgJFynqfCI

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Old 10-11-2010, 03:37 PM
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I have heard that before, It's where the plunger is working through to the booster. Don't know exactly how to explain it but i think it is the rubber inside between the rubber and the vacuum and the push-rod when pushing the pedal down. JMO but a combination of these things causes it to make this sound sometimes. JMO.
Wish i had a better explanation. Maybe someone else can explain it better.
If you have a very large cam then maybe you need to do something different
Either go manual or add something for vacuum to help it out. Possibly a lack of vacuum causing the problem.

Cole

Last edited by eloc431962; 10-11-2010 at 03:48 PM.
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Old 10-11-2010, 03:49 PM
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I went with a manual disc set-up on my camaro and i love it good pedal and stopping.


Cole
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Old 10-11-2010, 03:59 PM
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Thanks for the info Cole..

I have a 1" bore 74 Vette master now, it was for the manual brake vettes. I've heard of guys going even smaller in bore with manual brakes.

Do you remember what size bore master cyl you used on your Camaro?

I've heard a lot of good things about the manual brake disc/drum set ups..
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Old 10-11-2010, 04:00 PM
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The creaking crunching noise may be due to the brake fluid being old as this was a common problem on older ford windstars and mazda has a recall for this problem. remove the old fluid from the master cylinder resevoir and run new fluid thru the system. hopefully that will fix it for you, good luck
Bob
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Old 10-12-2010, 03:40 PM
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Quote:
Originally Posted by pitts64
Thanks for the info Cole..

I have a 1" bore 74 Vette master now, it was for the manual brake vettes. I've heard of guys going even smaller in bore with manual brakes.

Do you remember what size bore master cyl you used on your Camaro?

I've heard a lot of good things about the manual brake disc/drum set ups..
Sorry Pitts' i can't remember the bore size but if i get a chance i will pull it and check and post for you if you don't already know.


Cole
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