hp30 swap questions - JeepForum.com
 
LinkBack Thread Tools
post #1 of 10 Old 02-14-2010, 05:21 PM Thread Starter
globalnomad
Registered User
2005 TJ Wrangler 
 
Join Date: May 2008
Location: Florida
Posts: 60
hp30 swap questions

I have a buddy who flipped his yj a few months ago, and is parting it out. he has a hp30 axle on it, and I was wondering if it was a good canidate to swap into my tj. I know that the axle is vacuum disconnect. Will this swap work? I saw something on stu's website about it, but was wondering if I should go through the trouble or just get a junkyard xj non disco. the reason I ask is because it has 4.10 gears, and all the ones I have found at the local pick and pull yards are not the same ratio (will be swapping a 4.10 8.8 as well)

globalnomad is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 02-14-2010, 05:25 PM
never monday
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2005
Location: In my own world
Posts: 6,792
if it's cheap, go for it.
you'll need to do the CAD delete, I'd weld all the tube to casting joints.
never monday is offline  
post #3 of 10 Old 02-14-2010, 05:29 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,317
Many say the vacuum delete version is stronger on that side due to the big square housing the disco was installed in. All you need to do is replace the 2-piece axle shaft with a 1-piece replacement & screw a cover over the opening after installing a set of new internal axleshaft seals.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
post #4 of 10 Old 02-14-2010, 05:33 PM
Knuckelhead
AFSOC Retired
 
Knuckelhead's Avatar
2000 TJ Wrangler 
 
Join Date: Aug 2005
Location: Colorado
Posts: 19,140
Quote:
Originally Posted by Jerry Bransford View Post
Many say the vacuum delete version is stronger on that side due to the big square housing the disco was installed in. All you need to do is replace the 2-piece axle shaft with a 1-piece replacement & screw a cover over the opening after installing a set of new internal axleshaft seals.
And what about the control arm and coil spring mounts?...
Knuckelhead is offline  
post #5 of 10 Old 02-14-2010, 05:40 PM
never monday
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2005
Location: In my own world
Posts: 6,792
Quote:
Originally Posted by Knuckelhead View Post
And what about the control arm and coil spring mounts?...
TREKS D30 Axle Truss

notch around the CAD housing
never monday is offline  
post #6 of 10 Old 02-14-2010, 05:49 PM
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California
Posts: 64,317
Quote:
Originally Posted by Knuckelhead View Post
And what about the control arm and coil spring mounts?...
Whoops yeah, glad you caught that. It'd be a lot better if he found one out of an XJ since that will bolt right in. It'd be a pretty fair project to make that YJ leaf spring HP D30 fit into a coil spring TJ.

Getting Savvy...

When you have a choice, buy American.
Jerry Bransford is offline  
post #7 of 10 Old 02-14-2010, 05:58 PM
Knuckelhead
AFSOC Retired
 
Knuckelhead's Avatar
2000 TJ Wrangler 
 
Join Date: Aug 2005
Location: Colorado
Posts: 19,140
Quote:
Originally Posted by Jerry Bransford View Post
Whoops yeah, glad you caught that. It'd be a lot better if he found one out of an XJ since that will bolt right in. It'd be a pretty fair project to make that YJ leaf spring HP D30 fit into a coil spring TJ.
I went with the XJ. That way the control arms take the beating, not the drive shaft. Hopefully...

Knuckelhead is offline  
post #8 of 10 Old 02-14-2010, 06:55 PM
Greg_Volkman
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2003
Location: Parwan, Afghanistan (yeah, it sucks)
Posts: 1,897
not worth it to convert a YJ HP30. You'd need new mounts. at that point, I'd just be looking at a waggy 44. Might as well find an XJ HP30. I found mine on craigslist with 4.10 gears for $100.

-0|||||||0-
He who hunts in a pack is still a dog. The lion hunts alone, and so do I. - Napoleon
Conducting an argument by appealing to authority is not using your intelligence; it is just using your memory. - Leonardo Da Vinci
Greg_Volkman is offline  
post #9 of 10 Old 02-14-2010, 08:20 PM
jeepnmike
Registered User
 
jeepnmike's Avatar
1999 TJ Wrangler 
 
Join Date: Aug 2006
Location: Gainesville/Radford VA
Posts: 1,004
Jerry,
My buddy will sell me a complete vacuum disconnect HP D30 out of an XJ for $50. Will my TJ shafts fit in there? I don't see why not, just making sure. Thanks!!

'95 YJ- 1.25" BL, 31" bfg's, black cragars, herc'd tub. sold
'99 TJ Sport- 35's, 8.8, 4.88s, 5" RC LA, JB SS SYE, UFC TT, HD steering
jeepnmike is offline  
post #10 of 10 Old 02-14-2010, 10:30 PM
Greg_Volkman
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2003
Location: Parwan, Afghanistan (yeah, it sucks)
Posts: 1,897
mike, they will, but you'll require new out/inner passenger seals. I did this with my TJ. Stu has a good write up on his site with part numbers...look for the "TJ shafts in a YJ" conversion article. Can't remember the part numbers off the top of my head.

I also converted the outer knuckles/hubs/rotors to 99+ TJ.

-0|||||||0-
He who hunts in a pack is still a dog. The lion hunts alone, and so do I. - Napoleon
Conducting an argument by appealing to authority is not using your intelligence; it is just using your memory. - Leonardo Da Vinci
Greg_Volkman is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
HP30 swap thread...but this one's a how-to Kerndone TJ Wrangler Technical Forum 8 02-06-2012 06:32 PM
HP30 swap/Currie HD Steering/M.O.R.E. steering brace BigWaylon TJ Wrangler Technical Forum 32 01-02-2011 04:24 PM
HP30 swap finished Polaris TJ Wrangler Technical Forum 3 03-15-2007 08:19 PM
Hp30 4130jeeptj TJ Wrangler Technical Forum 1 02-07-2007 02:30 PM
Hp30 flip124 TJ Wrangler Technical Forum 1 02-27-2006 12:45 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome