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Old 02-11-2011, 11:55 AM   #1
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Disc Brakes

Does anyone have the 4 wheel disc brake set up on their jeep if so do you like it and recommend for off roading.
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Old 02-11-2011, 02:44 PM   #2
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You don't want the rears working Too well. Seriously. If they lock up before your fronts in an emergency stop or on slick, icy roads, your ass end will come around on you.

It a physics thing. Since the rear wheels don't turn and always track straight, a little slip on them is beneficial to keep you stopping straight. With ABS and other traction control systems, MAYBE 4 wheel discs would be okay as long as the braking is still pretty much 70% front brakes.

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Old 02-11-2011, 04:31 PM   #3
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well thats what you get a adjustable proportional valve...
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Old 02-11-2011, 04:33 PM   #4
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i am swapping my rear axle and i will have discs all around hopefully this weekend
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Old 02-11-2011, 04:34 PM   #5
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yup im getting my 8.8 with disc brakes with in the week. once i tweek it will be in my truck and ill let u know
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Old 02-11-2011, 04:56 PM   #6
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I have the 8.8 rear with disks and it's pretty nice.. Only thing I recommend is either buying new rotors or getting them turned - mine pulse a bit because I haven't turned them
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Old 02-11-2011, 05:19 PM   #7
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turned?? pulse? what u talking about
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Old 02-11-2011, 05:39 PM   #8
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turned is a technical turn for removing a small amount of material (generally pitted rusty rotors) via a lathe. they turn the rotor and use a stationary cutter and take off lets say .050" to improve brake response. im not sure the exact amount they remove so dont quote me on .050
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Old 02-11-2011, 05:44 PM   #9
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Usually they are turned to flatten the surfaces and and remove glazing. if the brakes are too warped turning won't work and you have to replace the rotors. They will pulse if they are warped.
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Old 02-11-2011, 05:48 PM   #10
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Quote:
Originally Posted by Undead-89 View Post
You don't want the rears working Too well. Seriously. If they lock up before your fronts in an emergency stop or on slick, icy roads, your ass end will come around on you.

It a physics thing. Since the rear wheels don't turn and always track straight, a little slip on them is beneficial to keep you stopping straight. With ABS and other traction control systems, MAYBE 4 wheel discs would be okay as long as the braking is still pretty much 70% front brakes.
Properly proportioned brakes are properly proportioned whether disc or drum. Discs just have some major heat transfer related advantages.

My LJ has factory front and rear discs...no ABS...no issues either.
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Old 02-11-2011, 05:54 PM   #11
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Discs also wick away water better than drums, so they work better after getting wet.
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Old 02-12-2011, 12:21 AM   #12
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I'm sorry for not properly explaining myself when referring to turning and the post immediately after mine explained it quite nicely actually. Everything in this thread has been an accurate assessment of rear disk brakes.
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Old 02-12-2011, 05:27 PM   #13
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I swapped in a Chrysler 825 rear axle and did a disk brake swap. So far I have no complaints; I can stop on a dime & give you change back! Bubba68CS is right about the proportioning valve too.

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