I too can has brake master reinforcement

I originally started with a Sloan brake plate. It was 1/8" stainless steel and even though it had wider coverage than the average plate these days, the flex was ridiculous. I'd say close to 1". This weekend, I picked up a 12"x12" 1/4" thick steel plate and went to work. After building the plate and adding the required angle to the mounting flange, I grabbed a piece of bar stock and welded that on to the upper right corner and tossed a modified A/C adjustment bracket from the original motor on there. I admit it, I stole the reinforcement straight out of the book of xschop.

While I was in there, I drilled out the firewall holes and installed some nutserts. I did the same on the strut tower, but added some jbweld to reinforce it even more. So far it looks a million times better than before, let's hope this fixes my flex.

That'll pass the Xschop design module

Robstah,

Did you bond and bolt the sloan plate? At what point where you getting one inch deflection?

Thanks, Mike

My plate pics:

Mike,

The flex would happen right at the master. The whole plate would flex outwards in that area.

If you look at the pictures above, you can see the prying marks on the firewall. That's from using some badass 3M double sided tape, made for holding highway signs and other large signs up and attached. Basically, it was a weld replacement tape.

Also, make sure you add an angle to both the brake and clutch masters. Without that angle, you will wear out the pistons very quickly. I had mine spaced off to adjust for the angle in the master brake cylinder and cut away the master clutch cylinder area.

I'm not sure why he specified these to be made out of SS, and 1/8" is crazy small too. Lesson here, don't take engineering advice from a graphics designer... I used 3/8" 50 ksi steel (A572) and that sucker isn't going anywhere. I also got it for free as it was scrap I can post a drawing of it if anyone is interested. The drawing isn't 100% correct, but the errors are easy to fix.

laptop_geek wrote:I'm not sure why he specified these to be made out of SS, and 1/8" is crazy small too. Lesson here, don't take engineering advice from a graphics designer... I used 3/8" 50 ksi steel (A572) and that sucker isn't going anywhere. I also got it for free as it was scrap I can post a drawing of it if anyone is interested. The drawing isn't 100% correct, but the errors are easy to fix.

If I remember right, he wanted to use aluminum first...

1/8" SS.......I too can has a broken flex plate

robstah wrote:
If I remember right, he wanted to use aluminum first...

Haha, that would have been great.

Rob, you will like this one. This was at PRI this past year, the Copo Camaro.



Look at how they "reinforced" their brake master.