Brake Conversion Question - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 6 (permalink) Old Feb 1st, 18, 05:01 AM Thread Starter
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Bruce
 
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Brake Conversion Question

A friend is working on a 67 Camaro, he wants to go from drum to disc.
He told me they ordered a manual disc brake kit.
Not keeping that in mind, I told him he will need to order a new master cylinder.
Now that I think about it, the original setup was obviously manual, so could he use the same master cylinder or will he need a new one with a bigger bore size?
This is for a street car.


Thanks
Bruce

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post #2 of 6 (permalink) Old Feb 1st, 18, 03:04 PM
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Jason
 
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Re: Brake Conversion Question

What brake kit is he ordering? Id ask that manufacturer what bore size they recommend. Is he going from 4 drum to 4 disc, or front disc and keeping rear drum? Some drum brake master cylinders have residual pressure valves inside. You need these for drum to overcome spring tension but not disc. You can purchase valve (10 lbs) and install in brake line to rear if using 4 disc master cylinder but keeping rear drums. You will also need new prop valve. I have a pretty complete kit for sale in classifieds if interested. Hope this helps.

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post #3 of 6 (permalink) Old Feb 1st, 18, 05:04 PM
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Al
 
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Re: Brake Conversion Question

Bruce, Check out thestopshop.com. They have a lot of
very good info and videos on the web site.

Al

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post #4 of 6 (permalink) Old Feb 1st, 18, 07:17 PM
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Scott
 
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Re: Brake Conversion Question

When I bought my 4 wheel manual system from SSBC it came with a new master and proportioning valve. No matter where you set the proportioning valve seems to make no difference.

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post #5 of 6 (permalink) Old Feb 2nd, 18, 04:15 AM Thread Starter
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Bruce
 
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Re: Brake Conversion Question

Thanks for the replies.

I don't know what kit the guy bought, but they are just converting to front disc brake. I know he wanted a power kit, but ordered the wrong one, so he may still end up getting a boaster.

Depending on where you read, so people say yes to the proportioning valve and some say no, so I told him to just try it as is for now.

I'll check out that link.

Thanks

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post #6 of 6 (permalink) Old Feb 2nd, 18, 05:21 AM
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Scott
 
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Re: Brake Conversion Question

Many disc/drum brake kits supply a combination valve, which incorporates all valving functions in one unit. The original disc/drum system consisted of a distribution block, a metering/hold off valve, and depending on application, a proportioning valve located on the subframe. Without knowing what the person bought, it is difficult to provide advice. Most of the vendors do not refer to the components by their proper terms, including the major brake suppliers.

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