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Old 04-09-2010, 02:55 AM   #1 (permalink)
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Default Which Master Cylinder? 66 Coupe with disc/disc

I've done a lot of searching because I'm sure this has been talked about before, but everyone who talks specific m/c's has a front disc/rear drum setup. I'm doing a complete power disc setup at all four corners. I've seen some m/c's being sold at Mustang vendors online, but the prices seem a little high ($100+).

I'd like to check my local autozone or napa for a possible cost savings and easy parts replacement, but I'm not sure what m/c to ask for. What year/make/model car would be a direct bolt on to my setup. I'd like to find a typical dual-chamber steel type with metal capt due to the kind of brake bleeding kit I have. Anyone know the answer? Thanks.

r/s

Chris
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Old 04-09-2010, 03:09 PM   #2 (permalink)
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I'd like to find one as well. What size brakes are you using? I know that a lot of people use sn95 master cylinders, but I want something that looks more original.
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Old 04-09-2010, 03:47 PM   #3 (permalink)
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I used one from a Jeep. It is all steel w/ metal cap. 15\16" bore I think? Runs 2003 cobra setup. 13" front 11.8 rear disc. Manual brakes. Stops like its power.
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Old 04-09-2010, 04:50 PM   #4 (permalink)
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You'll want either a 15/16" bore or a 1" bore. Personally I like the 1", to me there's too
much pedal travel with a 15/16" bore. The 15/16" will give you a slightly lighter pedal.
You'll want pretty big reservoirs front and rear and no residual check valves in either
front or rear port for a 4 wheel disc car.
For a 1" MC I like the 1985 Lincoln Towncar unit. Aluminum construction, ports on the
engine side. Big reservoirs. Appearance-wise, it looks like it belongs under the Mustang
hood. No check valves.
I've got one on a 66 with 4 piston fronts and Versailles setup in back.
Also got the same MC on a 68. Same 4 piston fronts and 2.5" drum rear. (that one came
from Cobra Automotive though- put a Wilwood residual valve into the rear line)
Here's a shot of the MC on my 68 coupe.....
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File Type: jpg CobraAutomotivealummastercylx.jpg (92.1 KB, 46 views)
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Last edited by GT289; 04-09-2010 at 05:19 PM.
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Old 04-10-2010, 11:27 PM   #5 (permalink)
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I use an 85 tbird master myself...7/8" bore, but my brakes are manual...I also happened to find an aluminum version(since some are aluminum, an some are cast iron) from autozone at $15 for remanned unit...custom lines required as outlets are on passenger side
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