The Stovebolt Site Forums The Shop Area General Truck Talk Dual Master cylinder mounting issues

Hello all,

I purchased a CPP dual master cylinder kit a while back for my '53 3100 restore and am having problems with the mount.
CPP isn't very helpful and after reading the other threads here on Master cylinders, I thought I'd see if anyone has any insight into this problem.

I am using the adaptor plate that they claim will mount to the stock brake hardware bracket. As far as I can tell, the stock '53 bracket sticks out too far for the adaptor plate to line up with the brake pedal spindle.

As you can see from the below photo link, looking directly from the top down (front of truck is to the left) on the master cylinder, the brake pedal is aligned on the shaft/spindle but the master cylinder and proportioning valve stick too far toward the center of the truck where I've yet to bolt the original 3 spd back in.

https://drive.google.com/file/d/0B8AGg4Pfg1IHaW93VFZwejdGejg/edit?usp=sharing]mount

I've looked for an after-market bracket that would move the cylinder and pedal out farther (down in the photo), while still keeping the use of the brake/clutch shaft in it's original position.
Short of cutting the stock bracket and re-welding, I'm at a loss as all the site claiming to sell bolt-on packages don't appear to be true.

Thanks for looking.

Michael

I used the CPP dual MC/booster kit on my '52 and it fit requiring slight modification to the transmission cross support. I don't think the dual MC only requires cross member mods. I also removed the proportioning valve from the MC bracket and bolted it directly to the frame of the truck (behind MC). The MC pushrod requires a spacer (about 3/4" or so) in order to bolt up to the brake pedal arm. The bracket and brace (brace probably only needed with booster) that came with the kit bolted directly to the original MC bracket.

BTW, I cannot open your photo as I do not have a Google account and never will.

Hy Michael E, I can't open your picture either.

Thanks for the notes guys. I thought the google link would be a good place to store the photos. Posted on my site here:
http://www.cmefx.net/BrakeCylinderMount.jpg

Thanks David for the points. I can move the proportioning valve to the frame, but the main concern (as you can hopefully see in the photo now) is that the bracket (and the cylinder) stick too far out to line up with the brake pedal. The pedal and the center of the dual cylinder should line up and they're off by more than an inch.
Perhaps I have an odd mounting position but it sticks out a long way for the old single cylinders?

Thanks again
Michael

David F is dead on that is what you have to do

http://cmefx.net/BrakeCylinderMount.jpg
https://drive.google.com/file/d/0B8AGg4Pfg1IHaW93VFZwejdGejg/view

Either of those should work.

Looks like my last reply didn't post
The main concern is the alignment of the cylinder with that of the brake pedal.
The pedal and the center of the cylinder should line up, but they're off by over an inch. Perhaps I need another frame mount as this one sticks out for the original brake cylinder but these dual cylinders are much wider preventing the two from lining up.

Thanks guys
Michael

Mine came from cpp as well,the bracket has two sets of holes drilled in it. One for mounting to a ford and one set for Chevrolet. Mine bolted up fine to the frame.The spacer provided was about a 1/4" to short,I added a couple washers and it's fine.
I believe I also had to cut about a 1/2" off of the adjustable heim joint then rethreaded it.
I modified my crossmember to fit around the proportioning valve.

Tim

I bought one of the Performance Online brackets- very similar to this one (probably the same)... Mine came with a little solid bushing that went on the bolt that attached the heim joint to the brake pedal- the bushing took exactly the needed offset to line up the pushrod & the pedal.

Worked like a charm for me.

I didn't have to do anything. The CPP one I got just bolted right up. I have pictures of it on the Bolt Bucket.

I've installed two of the units without issues.

Yeah, Michael, look at the link below my signature.. More Pix in the Bolt Bucket. There are detailed pics there that should help. The shafts do not line up by design. Hope this helps!

Thanks guys for the responses. Once I turned on Signatures, I eventually figured out the offset that Deve mentioned.
I'll give that a try.

Thanks again
Michael

It will work out great Michael. I went with a 3/4 inch stainless steel sleeve I got from Totally Stainless, but any spacer that gets the job done is just fine. Gotta love those Heim joints!