Brake woes

[Apogee]

Let me go back to the manual brakes. What MC were you running? Are you open to Manual if the effort goes down, stopping is better and you can deal with a non plastic reservoir MC. I suggest the 7/8" Wilwood MC. Perfect.

Nick, do you know of anybody running a 7/8" bore MC combined with the effective piston area that the CPP kits have? The twin 52mm piston calipers equate to what is essentially a single 73.5mm [2.90"] diameter piston...essentially the same piston area as a GM metric cast iron caliper with 2-15/16" pistons. I can't imagine that would work with most of the pedal ratios out there...you'd run out of real estate and be pushing on the floor boards before you started generating any significant pressure, don't you think?

I know I said that the 1" bore would be on the small side of things for a boosted application, but it pencils out pretty well for a manual setup with the calipers that you're running. Like Oestek said previously, you can pick up a 67-76 Corvette manual 4-wheel disc MC with a 1" bore and deep pushrod hole for dirt cheap and it might let you get back to driving your car instead of beating your head against it.

Something not yet mentioned would be to look at using a stepped bore, quick take-up master cylinder like the ones used on the 80's S-trucks amonst others. That's a slick solution to the volume versus pressure debate as you apparently can have your cake and eat it too. That MC is not without it's cons, but just a thought.

Tobin
KORE3