Help with Brake Master Cylinder Selection

[dgarner]

Hi, I have a 67 Dodge Dart which weighs around 3000 lbs with the following:

Front: 245/45 17 tires with Dodge Viper Calipers
Rear: 315/35 17 tires with Mustang Cobra Calipers

5-1 pedal ration.

Mopar 1.125" piston master cylinder (manual)



I would like to stick with a manual master cylinder if possible.

Can someone recommend what would give me good braking? Currently on test drives its scary!

Thanks,
Darin

[andrewb70]

Without doing the math, you need more line pressure, which means a small bore MC. Try 1995 Dodge Spirit with manual brakes. That's a 7/8" bore MC. O'Reillys sells one for about 60 bucks with an aluminum body and plastic reservoir.

Andrew

[dgarner]

Thanks Andrew,

I will pick one up and let you know how it goes.

Darin

[dgarner]

I installed the 7/8" bore MC and the braking is much better.

I want to re-bleed the brakes again this weekend and then see if it can lock wheels.

Thanks,
Darin

[andrewb70]

Glad it seems to be working out.

Andrew

[Dannnn]

never mind I just read the Ron Sutton sticky.

Thanks,
Dan

[andrewb70]

never mind I just read the Ron Sutton sticky.

Thanks,
Dan

Dan,

Ron's sticky is a good read, but realistically, most people end up with either a 15/16" or a 7/8" bore MC when going with manual brakes, given a common 6:1 pedal ratio...

Andrew