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Unread 06-25-2013, 12:47 PM   #16
SLOspeed
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In other words, for a front axle: a HP axle is stronger driving forward. LP is stronger going in reverse.

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Unread 06-25-2013, 01:09 PM   #17
riot1987
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I am going to assume this holds true to any HP axle?
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Unread 06-25-2013, 03:59 PM   #18
underpowered
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Quote:
Originally Posted by riot1987 View Post
I am going to assume this holds true to any HP axle?
any HP front axle, to my knowledge.
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Unread 08-28-2013, 11:22 PM   #19
ikidd
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Followup on this, yes, it works. Downside is you have to change the axleshafts and knuckles to get the ABS sensor and ring.
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Unread 08-29-2013, 02:14 AM   #20
Timo_90xj
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[quote=ikidd;15848622]Followup on this, yes, it works.
Quote:
Downside is you have to change the axleshafts and knuckles to get the ABS sensor and ring.[/b]
Not necessarily.

A lot of XJs have ABS brakes too, and as far as I know a lot of the knuckles on '90 and up XJs are equipped with the threaded holes for the abs wheel speed sensors. Both of my '90XJ had the holes, so did the axle that came out of the '99 XJ that had no abs.

Of course, if the axle came out of an XJ that had no abs there won't be sensors or ABS shafts installed so in minimum you do need the shafts with the ABS tone rings, and remove sensors from old knuckles and bolt them in to the XJ axle.
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1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...

http://www.jeepforum.com/forum/f13/d...s-etc-1222317/


1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***

***Under construction***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***
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Unread 08-29-2013, 04:13 AM   #21
newfieZJ
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Isn't there a minimum lift required to run the HP for clearance ? 3" IIRC
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Unread 08-29-2013, 01:51 PM   #22
Timo_90xj
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I run it on 1.75" with zero issues. I tried without any bumpstops and wasn't hitting anything; pinion yoke would've been a very close fit @ full bump without slightly modifying the driver's side downtube. Full articulation is not a problem, since when the drivers' side is tucked up and pass side drooping, pinion shifts away from the block.

That being said, @ stock height (or lifted with zero added bumpstopping) I wouldn't run a HP D30 without double checking on the exhaust/ pinion interference.
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1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...

http://www.jeepforum.com/forum/f13/d...s-etc-1222317/


1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***

***Under construction***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***
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Unread 08-29-2013, 06:32 PM   #23
Technohead
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Here's a better idea. Don't rebuild the D30 in your ZJ. Rebuild the HP D30 then swap it in. Done!
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Unread 08-29-2013, 07:31 PM   #24
shaban
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I ran a HP D30 without a lift, had issues with tranny lines rubbing against driveshaft on bumps.
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Unread 08-30-2013, 05:12 AM   #25
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Quote:
Originally Posted by shaban View Post
I ran a HP D30 without a lift, had issues with tranny lines rubbing against driveshaft on bumps.
Easily fixed!
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