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Old 07-17-2008, 10:39 PM
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I need a Master cylinder suggestion

Hoping one of you brake experts can help me here. I'm building a 54 chevy for my daughter and have added an after market front end (Jim Meyer racing) that uses camaro discs. I'm building an adapter to keep the master under the floor, I would like a GM type but one that has the lines on the inside or right side of the master, so that when it is turned around backwards under the floor, the lines exit toward the outside of the car instead of towards the middle. (hope that's clear) It will be a manual system, it will NOT be power assisted. Any suggestions?

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Old 07-18-2008, 05:37 AM
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Classic Performance Products has a master cylinder available in several bore sizes that has outlets on both sides, and comes with plugs that you seal off the unused side with. I have used 4 of them in different cars and been real happy with them. ( I installed one today on a customers car )

If you don't use that one you are somewhat limited to your options. Some Mid '70s ford full size and truck has a MC that will exit towards the outside of the car when turned backwards, but you can only get a 1 1/8 bore....IMO too big for manual brakes , unless you can utilize a 7:1 pedal ratio or better....

IIRC Jim Meyer usually uses the big GM calipers (IIRC the 81 camaro he bases his front ends on still used those 2 7/8" dia piston calipers.)

I'd be using a 1" bore master with that size. You can go down to a 15/16" if the pistons in the calipers are the smaller metric GM, with a 2 7/16 bore. That assumes that you have a pedal with 6:1 or better pedal ratio, and will move the master cylinder pushrod throughout it's entire 1+ inches of travel.

You can call up Jim Meyer Racing and ask for their reccomendation , Mike and Larry the tech guys are very helpful and knowledgeable about what works with their products.

Hope this helps,

Hope this helps, Mikey
my signature lines...not really directed at anyone in particular..

BE different....ACT normal.

No one is completely useless..They can always be used as a bad example
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Old 07-18-2008, 09:59 AM
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very good reply lots of good info! I was hoping to just run over to the parts store with a number though and put it on this weekend.
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