Kenosha Warrior Posted February 22, 2010 Share Posted February 22, 2010 Putting a AX-15/231 in place of my AW-4/231. How do I get that extra DS inch without getting a lengthened shaft. I hear tell of a YJ slip-yoke being used to make up the slack. Confirm or Deny - Anybody? Bueller? Link to comment Share on other sites More sharing options...
Geonovast Posted February 22, 2010 Share Posted February 22, 2010 Swap in an 8.25 or D44. Problem solved. :smart: :rotf: Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted February 22, 2010 Author Share Posted February 22, 2010 Yes, solved issue. Mucho Budget Buster, bingo. Waiting for two variables to swap axles. #1 -4.10 30/44 combo (Perfect for what I'd put this rig through) # 2 $$$$$$$$ Link to comment Share on other sites More sharing options...
Pete M Posted February 22, 2010 Share Posted February 22, 2010 I can find 3.55 8.25s all day long for under 150. heck if you were closer, I'd sell you my extra. thought about the front driveshaft yet? Will it work being 1" shorter? Link to comment Share on other sites More sharing options...
mvusse Posted February 22, 2010 Share Posted February 22, 2010 I can confirm the YJ slip yoke is longer. I run one myself. I can't remember how *much* longer, though. It's either 0.5" or 0.75". Also allows a much steeper angle without binding. Edit: just checked my build thread. YJ slip yoke is 0.75" longer than MJ. Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted February 22, 2010 Author Share Posted February 22, 2010 I can find 3.55 8.25s all day long for under 150. heck if you were closer, I'd sell you my extra. thought about the front driveshaft yet? Will it work being 1" shorter? Front DS came with the trans/case so that is covered. Mvusse, awesome! Now, to futher that question, what drivetrain of a YJ should I be looking for for that yoke? P'n'P near me has two 4cyl YJ's if that will work. Link to comment Share on other sites More sharing options...
mvusse Posted February 22, 2010 Share Posted February 22, 2010 I took my old yoke into the yard to check against. They put some paint on it to mark it so I wouldn't have to pay for it on the way out. But to be honest, I don't know. I assume they are all the same. Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted February 22, 2010 Author Share Posted February 22, 2010 Awesome! Thanks! Link to comment Share on other sites More sharing options...
LEAD_NOT_FOLLOW Posted February 22, 2010 Share Posted February 22, 2010 Just a FYI about the YJ yoke... The YJ yoke is longer, however it is not fully splined all the way. So what you gain in length, you loose in spline engagement. Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted February 22, 2010 Author Share Posted February 22, 2010 Correct me if I'm wrong But if I'm using a YJ yoke to gain that extra inch of shaft length, then it wouldn't be seating the entire length of splines to begin with? Link to comment Share on other sites More sharing options...
HOrnbrod Posted February 22, 2010 Share Posted February 22, 2010 The 27-spline GM Turbo 350 yokes LIKE THIS ONE work fine too. They use the Spicer 1310 u-joints and you can get them up to 7" long and cut them off to whatever length you require. The inner yoke may require grinding though on driveshafts with a higher operating angle. I used one on my LWB to gain an extra 1-1/2". It's fully splined too. :D Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted March 3, 2010 Author Share Posted March 3, 2010 My awesome girlfriend's most-awesome father had a few TH350 yokes laying about. (as well as a few swingin' GM and Dodge 'boats' :chillin: ) Thanks for the tip Don! Link to comment Share on other sites More sharing options...
terrawombat Posted March 3, 2010 Share Posted March 3, 2010 What if one were to go in the opposite direction. I'll be going from a BA 10/5 and NP231 out of my '88MJ to a AW4 and NP231 out of a '98XJ. I realize the output splines on the two transfer cases may be different, but anyone know off hand if the length of the driveshaft will need to be changed? Link to comment Share on other sites More sharing options...
Kenosha Warrior Posted March 4, 2010 Author Share Posted March 4, 2010 Uhm. Fawk. 1987 NP231 has a how-many spline output? Link to comment Share on other sites More sharing options...
Pete M Posted March 4, 2010 Share Posted March 4, 2010 I don't remember anything about a change in t-case output spline counts over the years. What if one were to go in the opposite direction. I'll be going from a BA 10/5 and NP231 out of my '88MJ to a AW4 and NP231 out of a '98XJ. I realize the output splines on the two transfer cases may be different, but anyone know off hand if the length of the driveshaft will need to be changed? Are you adding any lift? changing axles? Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 5, 2010 Share Posted March 5, 2010 Uhm. Fawk. 1987 NP231 has a how-many spline output? AFAIK, the NP231 TCs used in Jeeps all had the 27-spline output. Link to comment Share on other sites More sharing options...
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