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wj brake booster and mc conversion

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Old Dec 23, 2009 | 02:28 PM
  #1  
JEEPIN'around91's Avatar
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Year: 1991
Model: Cherokee
Engine: 4.0 H.O.
Default wj brake booster and mc conversion

i'm thinking about doing the wj brake conversion, it all looks easy, but where do you get the vaccum from for the booster?
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Old Dec 23, 2009 | 02:37 PM
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scratch that, i'm not really looking to upgrade my brakes, i just want to get rid of my electric brake booster because it's going out. is it as simple as puting a vaccum booster behind my current mastercylinder? or is there more involved.
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Old Dec 23, 2009 | 02:48 PM
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look for a booster/master from a 97 and up xj. with just a little modification, like grinding the rod flat on the end and reaming out the hole and just replacing a brake line and relocating the proportioning differential block to your stock location and you'll have twice the brake power.

sounds like a lot, but it's not at all. very easy to do. can do it in a couple hours.
google it, there are many write ups about it.

vacuum comes from the manifold.


97 and up is a dual diaphragm booster, while yours is only a single.
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Old Dec 23, 2009 | 07:21 PM
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can i put that booster behind my current mastercylinder? i dont mean to sound lazy, it doesnt sound too hard, but it is december in michigan and i dont have a garage to work in, at the moment.lol
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