On Sun, 16 Mar 2008 22:35:55 -0400, 98XJ <> wrote:
>How did you address the pressure differential between the old
>hydraulics
>and the new? There is a combination valve in the system designed to
>limit the pressure to the rear drum brakes so they cannot lock up
>during
>a panic stop. If they do lock up, you will swap ends faster than you
>can blink.
>
>The brake master cylinder also sends different volumes of fluid for
>drum
>wheel cylinders vs calipers. The, or some for sure, master also has
>check valves for drum brake fluid flow that can jam disk calipers
>'on'.
>
>I know 100% for sure that a master cylinder for drum brakes will 'not'
>work for disk brakes on a CJ7 or CJ5. It 'will' jam the calipers in an
>'on' position, I have seen it happen several times with sloppy parts
>counter persons giving out the wrong one or the wrong one in the right
>box. So if your gas mileage starts to drop....
>
>Just a heads up for you.
>
>Mike
>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>'New' frame in the works for '08. Some Canadian Bush Trip and Build
>Photos: http://mikeromainjeeptrips.shutterfly.com
>=====================================================================
>
>Final note:
>
>Over the weekend, I drove up to visit my dad. Up there on the 45th
>parallel, the secondary roads are still completely snow packed or
>iced-over, which gave me several op****tunities to mash on the brakes
>to see how the Jeep tracked. It glided completely straight on both
>snow and ice.
>
>So, I do not think there's an issue with using the stock XJ master
>cylinder and pro****tioning valve with the Liberty rear discs.
>
>If I experience anything different on dirt, sand, or dry pavement, I
>will post it here.
>
>Jim
Final Post +1 to address other questions:
The pedal feel is great and the braking is much improved.
My mileage was slightly over 20 mpg for the trip. This included some
4wd driving, too. js
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