'68 master cylinder

so i figured i'd check out my master cylinder while i was bored today. it came out of a '68 with a v6. so i thought it was dual reservoir. i was wrong. its a wagner single reservoir with one outlet on the front. the mounting holes measure 3 7/16 from center to center. according to krages it looks to be from 49-66. i was wondering if the dual reservoir mounting holes are the same width and if i should look for the correct master cylinder for the year of the vehicle. i'd be fine with just rebuilding this one and using it if it won't be a problem. also krage's list a double 3/16 outlet for the front of it. any advantages if i buy that with the rebuild kit or should i stick with the single? give me your thoughts......thanks

 

No. The dual master cylinder does not mount through the casting. It mounts with 2 bolts where the plunger goes into the cylinder like newer cars. It takes a braket mounted to the frame. Herm the Overdrive Guy has a kit to do it.

 

You definitely want to add a dual master cylinder so if you loose your brakes you can still stop. Ask me how I know. I'm in the process of doing a conversion on my '61.

 

herm also sells the bracket seperate, so you can save shipping $$$ by buying the mc locally.

 

You can do Herm's kit with the body on, you have to weld some spots instead of bolting them on and you have to like lying on your back a lot.

 

I personally am a fan of the Wilwood universal cylinders with remote reservoirs. These are popular on circle track cars. I have a single cylinder Wilwood universal on my 2A and almost bolts up perfectly where the stock was. I had to drill 1 hole in the frame IIRC. The dual version is the way to go for on-road Jeeps. Trail only, single will do ya for $67. Dual is worth double the price for $122 (Summit).

note side mounting holes which allows you to bolt directly to the frame. You wont use the end hole mounting options

 

hey that looks pretty interesting, if i can still use stock linkage and such i might try it. gotta go do some research. thanks

 

Yep, thats why I like it because it looks stock! I installed the one on this white Jeep in about an hour with very little fuss. Plan it from the pedal and drill holes. It works strong enough with the 11's in front that it makes the desire for power brakes a non issue. I think it is a 1" piston which is strong enough to stop a high speed roundy-round car let alone a Jeep!

The best part is the remote reservoir can go up on the cowl out of the way -- easy to maintenance.

 

i did. would have be much quicker without the body. i ended up removing a section of the floor to get to the top of the bracket to weld it on.

 

I like the Willwood also, but if you have a Herm Kit, he also sells a remote reservoir for the stock cylinder.

 

I have the exact master cylinder in the picture you posted but it has no holes through it. Do you have a part #?

 

FYI I'm in the midst of the dual reservoir upgrade, using a bracket that came off a '68 and a master cylinder that I bought from herm that he has raybestos make with the right valving for disc/drum.

I just got the old plate cut off the frame and the clutch/brake pivot bracket off the frame. It looks like I should have room to weld the upper part of the bracket to the frame with the tranny hump out, but I may have to add a spacer, and watch out for the gas lines!