Manual brake to power brake conversion questions - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > Manual brake to power brake conversion questions

Engo winches available at www.rockridge4wd.com! Free shippThe Original 3/8" Ruffstuff Diff Cover!The Ruffstuff NOT Universal 4 Link Kit!

Reply
Unread 06-27-2012, 10:02 AM   #1
Alex77cj7
Registered User
1977 CJ7 
 
Join Date: Jun 2012
Location: Lafayette, Louisiana
Posts: 1,074
Manual brake to power brake conversion questions

I'm wanting to install power brakes on my 77 cj7 but I am not sure what all I'd need to buy and change to install it. Would i be able to just buy the brake booster at a parts store and just install that with my stock line an master cylinder or would I have to change all that too? I'm also thinking about swapping my front drums to discs from a jeep of the same year. Would I be able to just go to a parts store and buy calipers and discs and install that? I'm really confused and need help so any little bit would be greatly appreciated!

__________________
Build: http://www.jeepforum.com/forum/f22/my-77-cj7-project-sleeping-beauty-1442479/#post14508634
Alex77cj7 is offline   Reply With Quote
Unread 06-27-2012, 10:26 AM   #2
Dadamsnv
Web Wheeler
 
Dadamsnv's Avatar
1977 CJ5 
 
Join Date: May 2012
Location: Sun Valley, NV
Posts: 3,340
I also have a 77 CJ, but mine's a 5. So far the best manual to power brake conversion I have seen and will be doing in the next few weeks uses a yj master cylinder and booster in place of the CJ master. Apparantly the best year for a donor is 95 for some upgrade reason. Luckily there is a good one in town for me, the guy wants $100 for the full assembly, but i think I can get $80. The only modding necessary to make it fit is you have either lengthen or shorten the booster input linkage a bit.

Use the search bar at the top of the site, that's how I found out about all this. good luck!
Dadamsnv is offline   Reply With Quote
Unread 06-27-2012, 10:40 AM   #3
jpd1899
Registered User
1978 CJ7 
 
Join Date: Jan 2009
Location: Richmond, VA
Posts: 290
To go with power brakes you may also need a new proportion valve to re-adjust the flow to the brakes. Depending on your donor parts, they may require new lines to/from the valve to cylinder.

A front disc brake conversion, requires a lot more than just calipers pads and cylinder. I don't have much time on my lunchbreak to find you a few articles to point you in the right direction. but here is one
http://www.jeepforum.com/forum/f8/di...-i-use-943611/

In short you need to replace everything from the nuckles out to make it work.

There is alot of info on the forum about this specific topic. If you are having a hard time finding it through the forum search, try using google and included jeepforum (one word) in the search
jpd1899 is offline   Reply With Quote
Unread 06-27-2012, 11:27 AM   #4
Alex77cj7
Registered User
1977 CJ7 
 
Join Date: Jun 2012
Location: Lafayette, Louisiana
Posts: 1,074
Thanks for the help! At least you were able to get me going in the right direction! But if I go to a parts store and get the booster and master cylinder for a 77 with power brakes would it just bolt up?
__________________
Build: http://www.jeepforum.com/forum/f22/my-77-cj7-project-sleeping-beauty-1442479/#post14508634
Alex77cj7 is offline   Reply With Quote
Unread 06-27-2012, 11:34 AM   #5
Alex77cj7
Registered User
1977 CJ7 
 
Join Date: Jun 2012
Location: Lafayette, Louisiana
Posts: 1,074
I'd rather start with brand new parts.
__________________
Build: http://www.jeepforum.com/forum/f22/my-77-cj7-project-sleeping-beauty-1442479/#post14508634
Alex77cj7 is offline   Reply With Quote
Unread 06-27-2012, 03:33 PM   #6
oteps
Registered User
1980 CJ5 
 
Join Date: Jul 2007
Location: pennsylvania
Posts: 678
There is a bracket between the M/C and the firewall. Your old m/c just bolts right to the firewall. I used a 89 xj booster and m/c but I had to make a braket and a new rod. I dont know anything about the disc brake swap.
oteps is offline   Reply With Quote
Unread 06-27-2012, 03:41 PM   #7
Alex77cj7
Registered User
1977 CJ7 
 
Join Date: Jun 2012
Location: Lafayette, Louisiana
Posts: 1,074
Would I be able to use stock brake lines?
__________________
Build: http://www.jeepforum.com/forum/f22/my-77-cj7-project-sleeping-beauty-1442479/#post14508634
Alex77cj7 is offline   Reply With Quote
Unread 06-27-2012, 03:41 PM   #8
RobsCrawlin7
no balls
 
RobsCrawlin7's Avatar
2001 TJ Wrangler 
 
Join Date: Feb 2005
Location: Triangle, VA
Posts: 3,253
i have a booster and mc that I just took out of mine when i put in hydroboost brakes, they worked great until i threw some 37's on it lol

if you are interested ill sell it to ya cheap.

if not then i cant say enough with VANCO brakes, they are absolutely amazing.
__________________
'79 CJ7 PICS HERE specs in profile - SOLD
'01 TJ 4.7/NV3550, 4" lift 33's stroked
'98 Chili Pepper Red XJ Sport, 4.0, AX15, 4x4 3" lift, 31" AT's
'79 CJ7 stock, 304

Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
RobsCrawlin7 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.