brake help !!!

How do I go about finding out what size of brakes are on my 1964 Tuxedo Park (CJ-6A)?If I remember right I read Tuxedos came with 10'' brakes.The real problem is I dont know what size master cylinder to buy.A 10'' master cylinder runs about $150.oo and the standard for 1964 CJ-5's and 6's around $50.oo.-$75.oo.I am also looking to buy (cheap/used) If a seller reads this ad.

 

Hi Mark,
FYI, my '64 tux came with 9" brakes and a single resivoir master cylinder. I upgraded to 10" on the fronts.

If you have the chance to upgrade from a 1 to 2 resivoir MC, I'd do it. An MC doesn't care if the brakes it goes to are 9" or 10" or 11".
A used MC? Well ya might take a chance on needing to rebuild it anyhow. I think you can get a better deal than $150, IMO. I've got a couple used 2 resivoir MCs from '71s that're takin' up space....


-Alan

 

buying a used master cylinder is like buying a used tire, only with the tire you can look at and tell if it is bad.

upgrading to a dual master cylinder is not all that difficult, but it is not as simple as buying one. It requires some cutting and drilling on the frame, two brackets, and a proportioning valve

You could buy the previous poster's used M/C. You may not want to rebuild it, but it will have the push rod you are going to need.


While dual mc's are inherently safer, a properly renewed single master cylinder system should work well too. Properly renewed means new shoes, wheel cylinders, master cylinder, and brake lines (rubber and steel).

That may sound like a lot, but everything in that system could be as much as 41 years old at this point, and who wants to bet their ability to stop in an emergency on 41 year old brakes?

You ought to be able to tell if you have 9 or 10 inch brakes. Look at the back of the backing plates. Is there a horizontal slot near the bottom at the 6 o'clock position (sometimes with a rubber plug) into which you insert the adjustment spoon? If so, 10 inch brakes. If not, 9 inch brakes.

 

could have 11 inch also. hardware is easier to find for the 9" and 11", the 10" is difficult. used the holddown springs from the later 10x2.5" brakes (not sure of year) stock 10" is the 10x2".

 

I have a 56 with stock 9" brakes and would like to upgrade to 11". Does anyone know of a place that I can get a complete parts list and some good instructions.

 

Indeed. Don't skimp on brake parts. Buy new. Rebuilt master cylinders can have a very short life.

Why don't you remove a wheel and measure the diameter of the drums?