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Unread 06-22-2013, 07:16 AM   #1
Jproy15
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Power brakes or not?

I figured out that my brake master cylinder is leaking. I want to order a new one but there are 2 different ones for my '82 cj7. How do I know if I have power brakes or not? Also, is there a better upgrade then the stock version everyone has for 70.00? Thanks for the info.

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Unread 06-22-2013, 07:21 AM   #2
NoNative
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In the picture below you'll see the booster between the master cylinder and the firewall. If you have one of those, you have power brakes.

I added PB to my white laredo and it made a huge difference. You can get all the parts at autozone, napa, o'reilly's etc. and it's not a very expensive upgrade if you don't have them. I highly recommend it.
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1986 CJ-7 Laredo, 258, AX15, AC Dana 30/44, Ox Lockers, Howell TBI, DUI, 4.5" RE YJ Springs, 1.25" BL, clocked & twin-sticked Dana 300 with Lomax 4-1, 4.10s, 33s, PB, 8000# winch, YJ Roll Bar, Factory 20 gallon tank.

1984 CJ-7 Renegade, 258, T4, AC, Howell TBI, DUI, 2.5" OME YJ Springs, 3.53, 31s, PB, Warn bumpers & 8000# winch, Factory 20 gallon tank

1984 CJ-7 Renegade, 258, Auto, AC, 3.31s, PB, Factory 20 gallon tank, Bone stock except for 31s
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Unread 06-23-2013, 08:01 AM   #3
Jproy15
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So the only part I need to make this upgrade is the "booster" part?
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Unread 06-23-2013, 08:22 AM   #4
NoNative
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I'm no mechanic, but if you can one of the stores I listed above them can probably tell you what parts you need. Alternatively you can do a google search for "Installing power brakes on a Jeep CJ" and I bet you'll find lots of write ups on how to do it what you'll need etc. The search function within jeep forum is your friend.
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1986 CJ-7 Laredo, 258, AX15, AC Dana 30/44, Ox Lockers, Howell TBI, DUI, 4.5" RE YJ Springs, 1.25" BL, clocked & twin-sticked Dana 300 with Lomax 4-1, 4.10s, 33s, PB, 8000# winch, YJ Roll Bar, Factory 20 gallon tank.

1984 CJ-7 Renegade, 258, T4, AC, Howell TBI, DUI, 2.5" OME YJ Springs, 3.53, 31s, PB, Warn bumpers & 8000# winch, Factory 20 gallon tank

1984 CJ-7 Renegade, 258, Auto, AC, 3.31s, PB, Factory 20 gallon tank, Bone stock except for 31s
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Unread 06-23-2013, 11:57 AM   #5
Jproy15
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Thanks!!
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Unread 06-23-2013, 05:23 PM   #6
Tigerjeep79
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I was thinking of this too. The reason I run 32" tires is that in my opinion 33s would be the tipping point for power brakes. Shouldn't be that hard of a swap; my only beef with it is that I'd have to give up my cool-lookin' factory air cleaner for one of those that sit on top of the valve cover. Trivial, I know.
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Unread 06-23-2013, 07:16 PM   #7
lucdog
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Quote:
Originally Posted by NoNative
In the picture below you'll see the booster between the master cylinder and the firewall. If you have one of those, you have power brakes.

I added PB to my white laredo and it made a huge difference. You can get all the parts at autozone, napa, o'reilly's etc. and it's not a very expensive upgrade if you don't have them. I highly recommend it.
Do they come with the firewall bracket?
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1979 CJ7 360, TH400/Quadratrac trail Jeep.
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1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
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Unread 06-23-2013, 08:30 PM   #8
texasdave
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Find a 95 wrangler you can get the parts from it to include the mounting brackets. You may have to alter the brake push rod unless you use the yj pedals.
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Unread 06-23-2013, 09:42 PM   #9
NoNative
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Quote:
Originally Posted by Tigerjeep79
I was thinking of this too. The reason I run 32" tires is that in my opinion 33s would be the tipping point for power brakes. Shouldn't be that hard of a swap; my only beef with it is that I'd have to give up my cool-lookin' factory air cleaner for one of those that sit on top of the valve cover. Trivial, I know.
Search eBay and you should be able to find a factory air intake set for cjs with power brakes. They usually go for around 30-40 buck last time I looked.
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1986 CJ-7 Laredo, 258, AX15, AC Dana 30/44, Ox Lockers, Howell TBI, DUI, 4.5" RE YJ Springs, 1.25" BL, clocked & twin-sticked Dana 300 with Lomax 4-1, 4.10s, 33s, PB, 8000# winch, YJ Roll Bar, Factory 20 gallon tank.

1984 CJ-7 Renegade, 258, T4, AC, Howell TBI, DUI, 2.5" OME YJ Springs, 3.53, 31s, PB, Warn bumpers & 8000# winch, Factory 20 gallon tank

1984 CJ-7 Renegade, 258, Auto, AC, 3.31s, PB, Factory 20 gallon tank, Bone stock except for 31s
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