Dual MC options?

http://www.kaiserwillys.com/product/2298/willys_mastercylinders

I love the idea of upgrading to a dual reservoir master cylinder, but for $225 it seems a bit pricey. Anyone ever swapped theirs out with something meant for a different application? I can't believe that it hasn't been done before.

 

You're paying for the brackets and development work needed to make sure that it fits.

The cylinder looks very similar to a 1972 CJ-5 part:

 

2x. And you will still have to get that lid off to fill it. My take is that it would provide only marginal benefits with the stock brakes.

 

Hmm... thanks guys. Maybe I'll look into a mid 70's MC and try to fab a bracket. I'm not so much concerned about better stopping, but would like a "failsafe" in the system. It seems like such a simple idea that even W-O in the late 40's should have made a dual cylinder for safety's sake...

 

bracket is a copy of the one on a 69-71 cj5

 

I dont know if i would call being able to have some brakes V/s no brakes if you have a brake failure "marginal". as far as stoping power then yes "marginal" is a very good description

 

Good ideas always seem obvious in retrospect.

The dual cylinder was not required by the DOT until 1967 IIRC. Some car makers used it earlier than that. My '66 VW had a dual cylinder, but my '65 F100 did not.

 

brengun..keep us posted...hmmmm so a intermediate booster with a 69-71 bracket...

 

i would just rig up my own bracket out of 1/8" plate.

 

Thanks for all the ideas, guys. I will let you know what I do. I'm hoping to get the brakes done by this summer as well as the finished rolling chassis on the Mistress. As before I'm trying to do this more or less on the cheap, so fabbing something together sounds good. I had found this writeup on the CJ3B page courtesy of the Herm link. In this writeup, a MC from a '69 is used.
http://www.film.queensu.ca/CJ3B/Tech/BrakesDualMaster.html

 

I don't think $225.00 is a lot for the piece of mind it provides. Especially with family riding along.

 

I've always been a fan of the Wilwood's universal w/remote reservoir since it mounts on our frames pretty easy (drill one hole). These are popular on roundy-round track cars. I have a single on mine which works phenomenal! That was before they offered a dual which is a much better choice, even if $60 more. google shop or ebay: wilwood 260-7563

If you need one, let me know, I am an aftermarket parts wholesaler

 

I think I have one out of a postal Jeep that is the same thing.

 

I put one of herms dual kits in an m38. It was hard to make it work right, but the current ownder seems happy with it.

 

Ended up taking mine to a pro fab shop for the MC install and new lines...The only way for it to fit with the sock L4134 was to notch the frame....

 

I've got the kit too. It's for the cj-5. It doesn't fit the cj2a a L-head motor. The bellhousing/engine is in the way. Here's how to make it fit poorly.

First, cut the stock mount off, which weakens the frame. Then notch the frame, which also weakens it. Drill holes for the bolts, which weakens it some more. Then there's the matter of the brake pedal not being anywhere near where it needs to be.

Look at sammy's second pic. He bent an s curve in the push rod. It works, but it also puts more angular force on the pedal which makes make it wear out faster.

I did a similar layout, and it just doesn't seem like a good long term setup. The whole thing is still next to the exhaust pipe and nearly impossible to fill up with the fender on.

I read something about about using a newer model cross shaft support assembly to fix the pedal alignment, but I never seen any clear pics of it or found a definite write up.