Brake booster grommet at firewall 68 camaro? - Team Camaro Tech
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post #1 of 11 (permalink) Old Oct 12th, 19, 06:33 PM Thread Starter
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Brake booster grommet at firewall 68 camaro?

Is there a grommet for the brake boosters shaft at the firewall? My brake shaft has a boot over it as seen in the picture but does not seem to like to stay in the firewall hole nor does it seem to seal it. Any help would be appreciated, thanks!


Last edited by jasonz28camaro; Oct 12th, 19 at 06:45 PM.
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post #2 of 11 (permalink) Old Oct 12th, 19, 11:19 PM
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You do not have a factory booster. You may have to make something. The original had like a foam ring. Don't think it would help you. Maybe a bead of seam sealer or something along those lines.

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post #3 of 11 (permalink) Old Oct 13th, 19, 06:26 AM
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Re: Brake booster grommet at firewall 68 camaro?

Someone has shimmed that booster with a bunch of washers. It is normally angled up. Not sure why, maybe they are using the manual brake hole on the pedal. If the shims were gone it might seal better.

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post #4 of 11 (permalink) Old Oct 13th, 19, 07:35 AM
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Re: Brake booster grommet at firewall 68 camaro?

Quote:
Originally Posted by dhutton View Post
Someone has shimmed that booster with a bunch of washers. It is normally angled up. Not sure why, maybe they are using the manual brake hole on the pedal. If the shims were gone it might seal better.

Don
Don is correct. Also with the booster shimmed the brake rod angle is not right.

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post #5 of 11 (permalink) Old Oct 13th, 19, 08:29 AM
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Re: Brake booster grommet at firewall 68 camaro?

I have never seen a master cylinder like that on a first gen.

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post #6 of 11 (permalink) Old Oct 13th, 19, 09:07 PM Thread Starter
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Re: Brake booster grommet at firewall 68 camaro?

Quote:
Originally Posted by Vega$69 View Post
Don is correct. Also with the booster shimmed the brake rod angle is not right.
Maybe thats why it never stopped good haha. I bought it with that master/booster setup and I plan on replacing it eventually but I'm just trying to get it running and sealled up so I dont flood the floor pan.

If the stock grommet will not work I'll just try to measure the the hole and purchase a grommet. Thanks for the input guys!
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post #7 of 11 (permalink) Old Oct 14th, 19, 06:05 AM
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Re: Brake booster grommet at firewall 68 camaro?

Why not try properly mounting the booster to pull the seal against the firewall?
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post #8 of 11 (permalink) Old Oct 14th, 19, 06:27 PM
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Re: Brake booster grommet at firewall 68 camaro?

Wondering why all those washers. Is it possible the front edge of the MC is hitting the hood when closing and had to be adjusted? That whole set up looks long.

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post #9 of 11 (permalink) Old Oct 14th, 19, 07:19 PM
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Probably using the spacers instead of cutting the rod. Who knows what it originally came off of. The master cylinder looks of the 70-80s era. Booster looks aftermarket.

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post #10 of 11 (permalink) Old Oct 14th, 19, 07:36 PM
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Re: Brake booster grommet at firewall 68 camaro?

The stock 11 booster is at an angle. When you use a dual 8 its more exaggerated.

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post #11 of 11 (permalink) Old Oct 16th, 19, 06:21 PM Thread Starter
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Re: Brake booster grommet at firewall 68 camaro?

Quote:
Originally Posted by Vega$69 View Post
The stock 11 booster is at an angle. When you use a dual 8 its more exaggerated.
Maybe thats why the previous owner used the washers, I'm not around it to measure at the moment. I plan on running a new master and possibly booster once its up and running. Just a timing thing so I can also do new front disk brakes, lines and front suspension.
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