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  1. Jeep CJ Forum
    I have a 1980 CJ7 with an AMC401 engine out of a 1978 Wagoneer w/ Disc/front-drum/rear brakes. The power booster and master cylinder both needed replacing. I bought PN# TFF-2131NBJ - Tuff Stuff Performance 2131NBJ Tuff Stuff Performance Master Cylinder and Brake Booster Combos | Summit Racing...
  2. Jeep CJ Forum
    Hello all, been searching but cant find quite what I'm looking for... I want to put a dual daiphragm booster setup in my 79 cj7 inline 6 with a Gronk MC 2100. Im wondering if anyone has done this and if modification is required to clear the throttle linkage. This is the assembly I'm looking at...
  3. YJ Wrangler Technical Forum
    My master is going out so I want to upgrade to the dual diaphragm booster with the 95 master but the booster is pretty much impossible to find is there somewhere I could source one? I ordered a regular booster for a 95 for now because I don't know if my master was leaking into the booster The...
  4. Jeep CJ Forum
    I was wondering if anyone has relocated their proportioning valve from the frame rail to a bracket suspended off the brake booster/master cylinder. My exhaust current runs uncomfortably close to the wilwood that was installed and I am not a huge fan of that. If anyone has done this, do they have...
  5. YJ Wrangler Technical Forum
    Hello everyone, needing some help as usual. I changed the calipers and pads on the front of my 93 YJ, we bled them but when i press down on the peddle the brakes feel empty. It really feels like only the rear drum brakes are working. When she isn't running the brakes feel great. They worked...
  6. Jeep CJ Forum
    Hey Folks- Newbie here to the board and to CJ's. I recently purchased an '83 cj7 6 cyl, t4 with power steering but not power brakes. The brake pedal is pretty soft so I figured I would replace the master cylinder to begin with. I noticed the option to purchase the brake booster and am...
  7. XJ Cherokee Technical Forum
    Yesterday driving my 2000 XJ (diesel, stick shift) thru town at lower speeds than 30mph, my brakes worked perfectly. When I reached a faster section and drove for a couple of miles at 50-60mph everything was OK till I had to brake for a junction, not a hard brake I just wanted to slow down...
  8. YJ Wrangler Technical Forum
    So here's the deal, last Oct I was in MOAB on Coyotee Canyon and I busted a front brake line. Did a quick fix down there to keep wheeling. Brakes felt really spongy, I bled the brakes multiple times. Replaced both front lines and bled again and well for good measures again. This past weekend on...
  9. YJ Wrangler Technical Forum
    So, on with the idle drama... I'm thinking now that it's the brake booster (coming to stop, idle drops to stall) have done the carb/venturi thing, seemed to work great with the varying idle, but the stop/dying thing continued. So brake boosters...I know the test is to take the vacuum line off...
  10. Engines & Drivetrain
    1991 Wrangler YJ - 4.0L inline 6. I am having some issues that I would like to solicit your thoughts on. The other day my brake pedal started hissing when it is not depressed. Once I touch it or accelerate, the hiss goes away. I quickly jumped on the forum and it appears that this is a brake...
  11. Jeep CJ Forum
    Hi Folks, First time posting. I have a 1979 CJ5 with a Holley Truck Avenger 470 carb on an AMC 304 motor . This weekend I uprated the brakes from the standard original master cylinder to a Navajo dual diaphragm brake booster and new cylinder. Tested the system, after bleeding the brakes and...
  12. YJ Wrangler Technical Forum
    I just replaced the brake booster and everything in the rear brake system and rear brake lines about 3 days ago. The master cylinder is about a year old. After test driving it for about 15-20 minutes and testing the brakes, all four brakes start to grab and eventually lock up. When they lock up...
  13. YJ Wrangler Technical Forum
    Hi all. I've been searching but running out of time. My jeep has a serious stopping problem. And im moving from florida to the mountains in PA within one week. And still have alot of packing and stuff to do. Im looking for simple problems/solutions. Here is my setup 1992 jeep YJ Throttle body...
  14. YJ Wrangler Technical Forum
    Changing out the booster on 91 yj. Have removed the retaining clip but rod will not come off brake pedal arm.. PleAse help
  15. TJ Wrangler Technical Forum
    1990 Sport 4.0/auto - occasionally when the brake pedal is depressed I hear a sound like gushing air and the brakes don't work well. I guess that sound is actually vacuum and the booster is going bad? Tom
  16. TJ Wrangler Technical Forum
    Hey guys, I put a new master cylinder on my tj not long ago and i just saw fluid on the ground. I looked and the booster had gone bad and is sucking the fluid out of the master cylinder, which was about out of fluid. To give some background , when I replaced the master the booster didnt have...
  17. Jeep CJ Forum
    Hello, I have recently came into a 1979 Cj5 in really good shape and i was going to convert the breaks to power breaks. I was reading about some different systems and i was wanting to have a vacuum assist so the brakes will work even if the jeep stalls. However im not sure how to do this slash...
  18. Jeep CJ Forum
    SO I have my wheels turning on an Idea for my FSJ ( I know its not a cj) without going into too much detail the general gist of what I need to know is if a YJ brake booster (when installed correctly) can stop a CJ running 35s and 4+ gears, would it have sufficient power to stop a heavier FSJ...
  19. TJ Wrangler Technical Forum
    I pulled my brake booster out and reinstalled the same unit making no modifications. The brake pedal wouldn't swing far enough back to depress the brake light switch upon reinstallation. Yesterday I replaced the booster with a remanufactured unit, still won't come back far enough. The switch...
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