MJ Comanche Tech. Stock & Modified. MJ (86-92)
All discussion regarding the Jeep Comanche, the pickup truck related to the Cherokee platform.

chrysler 8.25 swap, need advice

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Old 03-08-2015, 11:20 AM
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Originally Posted by cruiser54
Too easy, ain't it?
Swapping the axles over was a piece of cake. Even for some one like me. I can't believe the difference a slight gearing change made. I can't imagine what it will be like when I get 4.56 gears like I really want.
Old 03-08-2015, 08:21 PM
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Aye no ones mentioned anything about the hight sensing proportioning valve, what do I do with it? Leave it unhooked and just set it to the middle mabey? It aint even hooked up now, but then again the brakes dont work either...
Old 03-08-2015, 08:41 PM
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8.25 locked and loaded 88 mj

I removed the por valve and made new brake lines

chrysler 8.25 swap, need advice-forumrunner_20150308_193900.png
Old 03-08-2015, 08:49 PM
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Originally Posted by milehigh94xj
8.25 locked and loaded 88 mj

I removed the por valve and made new brake lines
Nice, disc brake 8.25, what locker and what size tires you running?
Old 03-08-2015, 08:51 PM
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Originally Posted by Gmaster

Nice, disc brake 8.25, what locker and what size tires you running?
Thanks, powertrax noslip 4:56 spinning 33" goodyears
Old 03-15-2015, 12:50 AM
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Use an XJ prop valve and remove the rear load sensing valve and stock distribution valve under the master cylinder.
Old 03-26-2015, 09:18 AM
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If I were you and had to do perches and everything i'd be doing an 8.8 with 4.10 and look for a HP30 with 4.10s or 8.8 with 3.55 and HP30 with 3.55
Old 03-31-2015, 04:09 AM
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Originally Posted by Rockfrog
Use an XJ prop valve and remove the rear load sensing valve and stock distribution valve under the master cylinder.
What he said. If you go discs in the rear use a ZJ prop valve
Old 03-31-2015, 08:35 AM
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Originally Posted by WVZJ
What he said. If you go discs in the rear use a ZJ prop valve
Correct. Or easier yet when you do discs, just swap the "guts" of a 94 to 98 ZJ prop valve.
Attached Thumbnails chrysler 8.25 swap, need advice-prop-valve-guts.jpg  
Old 03-31-2015, 12:58 PM
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Ok so guy at work may have an 8.8 hes selling, setup for 4link, if he sells it for cheap I might buy it. How do I tell if its the 7.5 or 8.8?
Old 04-18-2015, 03:38 AM
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Old 04-18-2015, 10:01 AM
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Very nice!! Sway bar on the rear?
Old 04-27-2015, 08:29 PM
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Originally Posted by Gmaster
Aye no ones mentioned anything about the hight sensing proportioning valve, what do I do with it? Leave it unhooked and just set it to the middle mabey? It aint even hooked up now, but then again the brakes dont work either...
As others have said just swap an XJ valve in. Though in my experience it's position does very little. Hell, mines zip tied in place and I don't notice any difference in braking over how it did when it was connected prior to the lift.

I've seen people just add all thread in there but I can't find any in my area that's threaded properly for the ends.
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