M/C question for manual brakes

[Apogee]

I don't personally know of any stepped bore MC's offered by the aftermarket, only OE applications. You might take a look at the third-gen Camaro unit (the aluminum units, not the early cast iron ones). There have been several write-ups on the web using the first-gen S10 units, but those need to have the registers machined down to the car standard of 37.5mm [1.476"] in most applications.

Can you use a straight bore? Yes, you can. You just won't get quite as good of a pedal height and feel as you could from a quick take-up unit. If you go with a Wilwood, I'd start with a 1" bore unit and see how you like it. There are some non-Wilwood 15/16 and 1-1/16 options if you feel the need to go one way or the other. You can pick up a 1967-1976 1" bore Corvette manual disc/disc MC for cheap and take it for a test drive. It's a cheap way to figure out if the bore size is going to work for you personally before you go and drop $200 on a Wilwood unit.

As for proportioning valves, you've basically got the OE replacement disc/disc options, or the aftermarket adjustable options. I personally prefer the adjustable units myself, however both can be made to work quite well.

Tobin
KORE3