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11" brake conversion

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slowjunk View Drop Down
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    Posted: 25 Apr. 2011 at 5:40am
I am considering doing the 11" drum brake conversion on my CJ2A.  I am curious how the 11" drum mounts.  Does it go on the inside of the wheel flange on the spindle or does it go on the outside of the flange.  Would I need M38 spindles to get the drum to mount on the outside of the spindle flange?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeff in the up Quote  Post ReplyReply Direct Link To This Post Posted: 25 Apr. 2011 at 7:52am
Hi
when I did mine I used all the brake stuff from an early wagoneer, that had the self adjusting brakes on it. Some had the non self adjusting  (the same as the wagons and trucks all the way back to the beginning.) While, the old wagon stuff is still better than the stock , the self adjusting are also self energizing and give much better results. The backing plates go on last thing out.  I did notice that the drums were on the outside of the hubs. (hub drum then wheel. so you can take the drum off without taking the hub apart.) this effects the back spacing and if you put them on the inside like the originals they will hit the backing plate.  I have seen some guys hook the brake line up with the hose that the newer jeeps used. I wanted mine to look as stock as possible. the wheel cylinders from a 1971 ford half ton 4x4 truck front  bolt in and work great.  the early ford used special brake hoses ( they had the lines crimped into them) so the wheel cylinders accept the inverted flare lines. I only had to bend my s lines a little and they fit right on. I ran with just the fronts for a couple years before I got around to doing the back.  I have owned this Jeep since 1975  and before the conversion I  had to work on the brakes every summer that I drove it.  since the conversion (10 years) i have not had to even add fluid and I can actually stop going down hill.
have fun
Jeff in the up
14 rusty CJ2A's. Honest Honey They all Followed me home
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Post Options Post Options   Thanks (0) Thanks(0)   Quote hawkjeep Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr. 2011 at 11:55pm
Mount on the out side front and rear just like cj5 1972
cj2a 1948 155822 v6 sold

cj3a 1950 3J45548 4L MB
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Post Options Post Options   Thanks (0) Thanks(0)   Quote slowjunk Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 2011 at 2:39pm
I was curious if the drum could be re-mounted on the outside face of the spindle.  The drum was mounted on the inside of the spindle face originally and with the brake conversion the drum will be mounted on the outside of the spindle face.  With the switch of spindle sides I was wondering if there would be a gap between the drum and backing plate.  Should I get a newer spindle (maybe with a different offset) or is the original spindle the same regardless of 9" drums or 11" drums?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rdunnebacke Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 2011 at 4:35pm
I have heard that there may be a difference. Seems to me that I saw some directions with a kit that said the hub may need to be mounted on the inside on some vehicles.
2-1948 CJ-2A
2-1979 Ford Bronco
2002 Grand Cherokee
2004 Ford F-150
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bkreutz Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 2011 at 7:07pm
Your new 11" drums will be deeper than the 9" ones to make up the difference in depth moving from the inside to the outside of the hub. (at least on every conversion I've seen) 
Gale

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Crazy_YJ Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2011 at 12:06am
Has anyone tried these; http://www.willysjeepparts.com/Brake_Package_Deals.htm  price seems a little high to me, but I guess if it works would be worth it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bkreutz Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2011 at 1:39am
Seems awful pricey to me
Gale

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Post Options Post Options   Thanks (0) Thanks(0)   Quote slowjunk Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2011 at 3:27pm
Agreed that it seems high.  I just bought the kit from another vendor for far less.  I have to say it is always nice to support vendors though.  They allow us to keep our vehicles alive.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Crazy_YJ Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2011 at 4:14pm
Originally posted by slowjunk slowjunk wrote:

Agreed that it seems high.  I just bought the kit from another vendor for far less.  I have to say it is always nice to support vendors though.  They allow us to keep our vehicles alive.
Where did you get yours?  Really need to get some better brakes Wink  Pretty much the only this keeping me from getting this thing on the road Smile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote slowjunk Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2011 at 7:25am
Crazy_YJ,

I bought the kit from Herm the Overdrive Guy.  He said that lots of people were buying them now that the weather is getting nice.

There are several vendors I have seen.

http://www.the-jeep-guy.com/brakes.htm
http://www.r-p4wd.com/

There may be others.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote slowjunk Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2011 at 7:27am
I am still wondering if I need to get CJ-3B or CJ-5 front hubs instead of my CJ-2A hubs so that I can mount my drums on the outboard face of the hub.  I was told the front hubs for CJ2A and CJ5 are the same except that the studs are already pressed in on the CJ5.

I am concerned that if I use the CJ2A hubs my drums will end up with imcorrect space between the drum and the backing plate.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeff in the up Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2011 at 3:25pm
Hi
I used my original cj2a hubs.  the only thing I was sorry I did was. I took the original hub and drums to a shop in town to have the studs pressed out.  I was planning to save the original drums.  they did not support the drum on the press so the drums were ruined. I could have done this with a big hammer.  otherwise it all went fine.  same with the rear.  I just pressed in the new studs and assembled the hub on the jeep. then slid the drum onto the hub and drums.  the back spacing looked good and  I have never had any problems.
jeff in the up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote slowjunk Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2011 at 11:48am
Does anyone know if it is possible to use the steel S-Lines when going to the 11" brakes?  I think I have seen pictures somewhere where I saw someone running the S-Lines instead of hoses.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeff in the up Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2011 at 11:55am
Hi  if you get the wheel cylinders from a half ton ford in the early 70's they had a real strange hose setup that ended in a normal inverted brake line fitting on the wheel cylinder.  I got mine at the car quest  (ten years ago)  and  when i assembled the brakes  I only had to bend my S lines a little bit  and it all hoked up.  been working great ever since.  I used to have the part numbers of those cylinders  but  i don't  know what i did with them.  I also used the same cylinders for the rear brakes.
jeff
14 rusty CJ2A's. Honest Honey They all Followed me home
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Post Options Post Options   Thanks (0) Thanks(0)   Quote garage gnome Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2011 at 7:13pm
Originally posted by jeff in the up jeff in the up wrote:

Hi  if you get the wheel cylinders from a half ton ford in the early 70's they had a real strange hose setup that ended in a normal inverted brake line fitting on the wheel cylinder.  I got mine at the car quest  (ten years ago)  and  when i assembled the brakes  I only had to bend my S lines a little bit  and it all hoked up.  been working great ever since.  I used to have the part numbers of those cylinders  but  i don't  know what i did with them.  I also used the same cylinders for the rear brakes.
jeff

Nope, the 11" brakes used rubber lines from the frame down to the wheel cylinder.
Nate
1953 3A, 1949 3A, 1947 2A, 1918 IHC Titan 10-20, 1905 IHC Famous, other hit n misses
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeff in the up Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2011 at 9:56pm
Hi  look at the 1972, the rubber hoses have a steel line with an inverted flare molded on the wheel end.  only on the 4x4.  the 2x4 is  the common type hose.  I remembered the odd lines, cause they cost an arm and a leg when i drove that year truck. these cyl bolt right into the jeep backing plates. Note  these are for the self energising self adjusting type.  the ones with the 2 cam adjusters are the same setup as the early wagons and I didn't think they were worth the effort. my brakes were from a wagoneer with 11 inch  self adjusters . but  I have seen the cam adjuster ones on the wagoneers .
jeff 
jeff
14 rusty CJ2A's. Honest Honey They all Followed me home
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