Two manual brake conversion questions???

[Apogee]

Originally Posted by dead sailor

Thank you for posting those links. I would like to run the 7/8" wilwood master instead of the master that comes with those kits. I believe all of those are 1" or bigger. I'm going to call a few of these places tomorrow and see if they will sell just the adapter.

The master cylinders shown in those links with the aluminum body and black plastic reservoirs are actually OE Mopar units and can be found in a variety of configurations and bore sizes including 7/8", 15/16" [24mm], 1.06", etc. They were supplied on numerous Dodge/Plymouth/Chrysler applications from the early 80's through the 90's IIRC.

[dead sailor]

Originally Posted by Apogee

The master cylinders shown in those links with the aluminum body and black plastic reservoirs are actually OE Mopar units and can be found in a variety of configurations and bore sizes including 7/8", 15/16" [24mm], 1.06", etc. They were supplied on numerous Dodge/Plymouth/Chrysler applications from the early 80's through the 90's IIRC.

The ones i've seen offered with the firewall adapter were 1.06 or bigger.

[Apogee]

Originally Posted by dead sailor

The ones i've seen offered with the firewall adapter were 1.06 or bigger.

And? Be wary of any company that wants to sell you any master cylinder without first asking you what you're running for brakes as the master cylinder bore size should be matched to the caliper piston area, pedal ratio and application (manual, power, hydro, etc) just for starters.

Most of the manual conversions that I've seen seem to be geared towards drag racers concerned about weight who have huge duration camshafts and therefore no vacuum. Drag cars are not particularly known for their brakes (at least not in a good way IMO) and function is regularly sacrified for weight in order to optimize straight line performance. The 1.06" master cylinder probably works fine for the application it was intended for...but that's not to say that it will work well for all applications.

HTH,
Tobin
KORE3

[dead sailor]

Originally Posted by Apogee

And? Be wary of any company that wants to sell you any master cylinder without first asking you what you're running for brakes as the master cylinder bore size should be matched to the caliper piston area, pedal ratio and application (manual, power, hydro, etc) just for starters.

Most of the manual conversions that I've seen seem to be geared towards drag racers concerned about weight who have huge duration camshafts and therefore no vacuum. Drag cars are not particularly known for their brakes (at least not in a good way IMO) and function is regularly sacrified for weight in order to optimize straight line performance. The 1.06" master cylinder probably works fine for the application it was intended for...but that's not to say that it will work well for all applications.

HTH,
Tobin
KORE3

All im saying is that I haven't seen any companies offering this adapter with a 7/8" master. I'm not saying that they aren't made. I called bmr and one other company that makes these kits and they both don't offer the adapter alone.

[Fitz78ta]

Call Midwest Chassis (good guys) or Burkhart Chassis and tell them what you are doing, they may sell the adapter by itself, or may be able to get you a different size master as well

http://www.midwestchassis.com/products.html 309-382-6252

http://burkhartchassis.com/id84.html 217-855-8660