shimming the MC - Team Camaro Tech
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post #1 of 9 (permalink) Old Aug 2nd, 06, 04:58 PM Thread Starter
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Kurt
 
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shimming the MC

What do you use to shim out the master cylinder?
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post #2 of 9 (permalink) Old Aug 2nd, 06, 05:02 PM
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Re: shimming the MC

why would you want to do that?
i never heard of doing that......
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post #3 of 9 (permalink) Old Aug 2nd, 06, 05:52 PM
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Re: shimming the MC

Me either. But I'm listening.

Robert

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post #4 of 9 (permalink) Old Aug 2nd, 06, 06:30 PM Thread Starter
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Kurt
 
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Re: shimming the MC

I need to either shim the MC away from the booster or shorten the pushrod. I am using the deep MC which should require the 4" pushrod, but for some reason the 4" is too long. If the push rod is too long the return holes will not open and will not allow the brake fluid to return to the reservior, thus causing the brakes to drag and overheat.
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post #5 of 9 (permalink) Old Aug 2nd, 06, 07:03 PM
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Re: shimming the MC

First off, you are trying to use a non-power M/C in a power M/C application!

I've been there b/c I'm CAREFULLY using a power M/C in a non-power application.

You can use washers to shim it out farther away from the firewall as long as the stud threads are long enough to hold it?

Otrherwise, I figure that you will have to figure out how to change the studs out for longer ones??

pdq67



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post #6 of 9 (permalink) Old Aug 3rd, 06, 03:07 AM Thread Starter
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Re: shimming the MC

PDQ67, I am using the exact same set up that came on disk brake cars from the factory. I have a L78 car that has the exact same MC and pushrod rod.
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post #7 of 9 (permalink) Old Aug 3rd, 06, 05:10 AM
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Re: shimming the MC

Could the pedel be partialy pressing in on the booster. Maybe the problem is with the rod under the dash. In the wrong hole or adjusted improperley.

Robert

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post #8 of 9 (permalink) Old Aug 3rd, 06, 07:45 AM
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Re: shimming the MC

I've heard of people using washers between the master and booster.
If it was me, I'd try to determine which aftermarket part was the cause, and fix, modify, or replace it.... or just grind a little off the pushrod

The short=power and long=manual is a myth.
It depended on year/make/model.
My 68 Pontiac came factory with the shallow master and manual brakes.

If I didn't learn it from my my mentors, I learned it as a result.

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post #9 of 9 (permalink) Old Aug 3rd, 06, 02:13 PM Thread Starter
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Re: shimming the MC

That,s what I did. I used washers between the MC and booster until the fluid went back into the MC. Then I took the thickness of the washers and trimmed the push rod the thickness of the washers, Which ended up only being like a 1/16 of an inch. Hard to belive a 1/16 of an inch could cause so much grief. thanks for the help everyone
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