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Old 12-11-2005, 01:01 PM
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Need 1" Stroke OEM Master Cylinder - Help?

I need a OEM style dual reservoir 1" bore master cylinder with a 1" stroke/travel.
I have the early Mustang unit in hand, and it is 1 1/2" stroke.

I do NOT want a Wilwood single unit.

If you know of a application, part number, or web-link with this data, Please let me know.

Thanks in advance,
Glenn

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Old 12-11-2005, 02:00 PM
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Why does it have to be a 1" stroke?

You can change your pedal to rod ratio to fit a 1 1/2 stroke.
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Old 12-11-2005, 02:36 PM
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I need a shorter overall travel of the pedal and would like to keep my 6 to 1 ratio do to manual brakes.
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Old 12-11-2005, 03:33 PM
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You might look at the MC for the 69 Corvette 427cid 435hp 3X2bbl carbs 4 wheel manual disk brakes. It is a very common MC street rodders use. I do not know the stroke, as that has never been a concern for me. The MC can be obtained from Advance Auto new for about $60.
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Old 12-11-2005, 04:56 PM
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Corvette MC is to large of a bore,
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Old 12-11-2005, 07:41 PM
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The Corvette MC I spoke about is 1" bore, I have one on my 34 right now.

Vince
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Old 12-12-2005, 12:59 PM
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It is true, the manual Corvette master has a 1" bore.

I don't really understand why you want such a short stroke master. Once the linings are held tight against the rotors/drums, there is no more significant pedal travel, no matter the total master stroke. The fluid simply stops moving.
The stroke should be short enough that if you lose one circuit due to a leak, you will still develop pressure in the remaining circuit before the pedal hits the floor... is that your reasoning?
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Old 12-12-2005, 06:18 PM
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The stroke has nothing to do with the proper operation of your brake system as long as there is enough to fill the wheel cylinders. The length of pedal travel is limited by the volume of fluid moved by the piston vs. the amount of volume in the calipers/wheel cylinders. If you were to limit the travel of your master cylinder and it bottomed out before the calipers/wheel cylinders were full, you would have no brakes.
Most major brake manufacturers publish a "Master Reference Guide"....I know that Raybestos has one.....probably Bendix and Wagner as well. Check with your local parts store ( the local independent guy...not Pep Boys, Auto Zone, etc. as they don't know what they are doing) and ask the counterman to either order one for you or let you look at his. It has the specs for all of the parts offered. You can find all the 1" bore cylinders you could ever want and can pick the ones with the right kind of line connections, mounting flanges, etc. as this book has pictures to use for comparisons.
Good luck.
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