Brakes help

[gsa612]

If your doing any mods to the MC make sure the pushrod is secure so it don't fall out from the back of the master. gsa612

[RobbieRacer]

Originally Posted by jerry witzel

Here's an adapter for the master cylinder. https://www.ebay.com/itm/Pro-5-0-79-...wAAOSw7cZcM86v

I have one of these already

[RobbieRacer]

Originally Posted by Dave Noll

Umm, If it is actually Case Hardened, A solid carbide drill bit is not going through it. I like the welding in an extra 2", that will give more leverage but will put the pedal close to the floor.

My car has 2 stubs welded on the brake pedal lever from the factory. I also put as large of a Rear wheel cylinder I could find on the Fronts. (4 wheel drums)

Mine only has one stub and it's also welded on.

[Dave Noll]

Originally Posted by Mark Yacavone

Makes sense. Might be then. Once you get the drill bit started, it'll go.
I'm sure the pedal arm is hardened for safety reasons.

Originally Posted by Alan Nyhus

Case hardening only hardens the surface. The material under the hardened surface remains unaltered. -Al

Machining through a 60Rc surface can be done, but not easily at all.

Speeds and Feeds
SFM IPM DOC (Inch Depth of Cut)
Carbon And Alloy
Steels (50-60 Rc) 300-500 0.002-0.008 0.003-0.020
Die Steels (55-65 Rc) 150-350 0.002-0.008 0.003-0.008