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Unread 03-15-2007, 12:51 PM   #1
Polaris
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Join Date: Mar 2003
Posts: 1,224
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

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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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Unread 03-15-2007, 01:13 PM   #2
Varnish
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1998 TJ Wrangler 
 
Join Date: Feb 2005
Location: Juneau, AK
Posts: 4,304
Cool. Your second link is truncated in the middle.
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'98 TJ (see profile)
'88 YJ with 4.0/AW4 swap & CJ front end
'80s CJ Resto-mod ('80s CJ frame/front end, YJ tub, '00 XJ 4.0)
'99 XJ 4dr SE
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Unread 03-15-2007, 01:21 PM   #3
dennisuello
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1997 TJ Wrangler 
 
Join Date: Apr 2001
Location: Reno, Nevada
Posts: 386
Do something like this and also weld on some control arm bracket skids. Your disconnect housing will thank you later.

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Unread 03-15-2007, 08:19 PM   #4
Polaris
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Join Date: Mar 2003
Posts: 1,224
Does the HP30 really need a truss?
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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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