HP30 swap finished - JeepForum.com
 
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post #1 of 4 Old 03-15-2007, 12:51 PM Thread Starter
Polaris
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HP30 swap finished

I got a HP30 axle out of a late 80's XJ to bolt in to match my rear 8.8 with a ratio of 4.10. It went smoothly, except for finding an axle seal that would fit into the non-machined passenger side tube. Swapping in the axle consisted of using my TJ single piece axles and knuckles. I was told by some that the vacuum disconnect housing would need to be trashed in favor of a block-off plate, but after taking off the four bolts of the cover and removing the shift fork and sleeve, I just RTV'd it, reinstalled the screws and plugged the hole. Sounds daunting to some, but it wasn't hard at all. I did pretty mcuh the whole thing myself. HP30's offer more clearance and stronger reverse cut ring/pinion gears. I saved myself about $400 over a front regear in the process and came out with a stronger front axle. I'm surprised to not see more of this swap



Writeup and explanation of "reverse cut" gears with pics:
http://thepointbreak.org/jeep/hp30.php

Pics
http://www.thepointbreak.org/gallery...?g2_itemId=468


2000 TJ Sport, 3-speed slushbox
HP30, ChroMoly shafts, Ford 8.8 rear, 4.10s 35s
ORIGINAL Black Jeep Club Member #34



ThePointbreak.org | Mods and Wheeling pics
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post #2 of 4 Old 03-15-2007, 01:13 PM
Varnish
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Cool. Your second link is truncated in the middle.

'98 TJ, '06 LJ, '88 YJ, '86 CJ, '99 XJ 4dr SE
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post #3 of 4 Old 03-15-2007, 01:21 PM
dennisuello
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Do something like this and also weld on some control arm bracket skids. Your disconnect housing will thank you later.

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post #4 of 4 Old 03-15-2007, 08:19 PM Thread Starter
Polaris
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Does the HP30 really need a truss?

2000 TJ Sport, 3-speed slushbox
HP30, ChroMoly shafts, Ford 8.8 rear, 4.10s 35s
ORIGINAL Black Jeep Club Member #34



ThePointbreak.org | Mods and Wheeling pics
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