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Old 02-14-2007, 04:24 AM
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Quote:
Originally Posted by A Cobra guy
I've got the Mustang II spindles on my car with 11" Granada rotors and some GM calipers. I have hated the setup since day one. (Way too much pedal preasure)
Is this a comparison from stock Mustang II's, or did you have this upgrade from the first time you drove your Cobra?

AFAIK, pedal pressure is not really due to number of pistons, but somewhat to total cross-sectional area of the pistons. Pedal pressure is generally controlled by 2 things ... the pedal lever ratio (which should be 1:6 or thereabouts) and the MC bore dia. If you have discs on the rears, you'll need a bit more fluid capacity, so a 1" or thereabouts bore should be good. Smaller bores will reduce the pedal pressure. As an example, on a Mustang, when converting from power to manual brakes, the bore is generally reduced to 7/8" or even 3/4".


Quote:
I believe Wilwood has a kit for the 4 bolt wheels.
I had looked on there previously, but did not find any 4-lug kits. IIRC the pdf tech docs on the MII kits I pulled up all stated "5-lug only" right at the top. Any links?


Quote:
I kept searching around and came across www.HotrodsUSA.com.
In my case they have exactly what I wanted. 11.75" Wilwood rotors with 4 piston calipers and no change to the wheel offset. Watch out for these kits changing your wheel position.
Similar for this site. I had been searching extensively before I posted here. Any links and/or part numbers you have (to 4-lug options) would be much appreciated.

Offsetting my wheel a bit is not a problem, as I think the wheels could use a bit of a shift to the outside to fill up the wheel well a bit more. However, I've never checked the scrub radius on this car, so not sure if an outward offset would cause noticeable tramlining or make it more stable.

Cheers,
-Neil.
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Last edited by Cobra Dude; 02-14-2007 at 04:41 AM..
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