AX15 np231 w/SYE Driveshaft Length

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Dec 19, 2011 | 02:54 PM

#16

BigC9164

Senior Member

Joined: May 2010

Posts: 611

Likes: 2

From: Austin, TX/ Atlanta, GA

Year: 1999

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by dogger15

thanks, ive been waiting for someone to make a thread again with this subject with the ax15... now i just need to decide what sye i want to get

Please please go with JB CONVERSIONS!!!!!! Their kit IS the best!!! It had a better yolk. Stronger main shaft and more actual AMERICAN design into the whole thing. And it is produced in the USA!

http://www.jbconversions.com/product...1j_std_sye.php

Dec 19, 2011 | 03:01 PM

#17

s14unimog

CF Veteran

Joined: Dec 2009

Posts: 1,396

Likes: 2

Model: Cherokee

Quote:

Originally Posted by xj_maniac_newb

kinda off topic, but i wonder how big your lift has to be to use a 2wd driveshaft?

It's still a slip yoke style driveline though; isn't it? You still need something to slide with a SYE.

Dec 19, 2011 | 07:55 PM

#18

dogger15

CF Veteran

Joined: Apr 2010

Posts: 4,339

Likes: 1

Model: Cherokee

Quote:

Originally Posted by BigC9164

Its either them or the advance adapters one I think

Dec 19, 2011 | 08:08 PM

#19

brian0128

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Joined: Dec 2011

Posts: 1,140

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From: Near the airport by the water

Year: 1999

Model: Cherokee

Engine: 4.0

Will going with the JB Conversions instead of the Advance Adapters one require a longer driveshaft?

Dec 19, 2011 | 08:35 PM

#20

dogger15

CF Veteran

Joined: Apr 2010

Posts: 4,339

Likes: 1

Model: Cherokee

Quote:

Originally Posted by brian0128

Will going with the JB Conversions instead of the Advance Adapters one require a longer driveshaft?

Wondering that too

How much was shipping for the jb

Last edited by dogger15; Dec 19, 2011 at 10:05 PM.

Dec 20, 2011 | 03:20 PM

#21

BigC9164

Senior Member

Joined: May 2010

Posts: 611

Likes: 2

From: Austin, TX/ Atlanta, GA

Year: 1999

Model: Cherokee

Engine: 4.0

Shipping for me to GA was like $15-20 I think. Not too bad. And technically yes you would need a longer DS because the the YOLK on the JB kit is shorter. But it is really only like a quarter to a half an inch shorter. Not a lot!

Dec 28, 2011 | 09:14 PM

#22

dogger15

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Posts: 4,339

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Model: Cherokee

Jan 14, 2013 | 11:39 AM

#23

straightsixjeep

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Joined: Aug 2012

Posts: 1,539

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From: ks

Year: 1998

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by BigC9164

I was in the same boat as you. I had a 3" lift with the ax15/231/8.25 combo. I went with the JB CONVERSIONS SYE, it is the best on the market. And is still only $199. That company has very close ties with new process gear(the company that produces the np231)http://www.jbconversions.com/product...1j_std_sye.php

Here is a chart that lists all the drive shaft length for the xjs and zjs. You WILL need a longer one! I went with one of the longest ones available...33"... And I still only have about 2" of slip left in the driveshaft. I found one on eBay for $30 and repainted it and put new u joints in it. For a grand total of $250 for a full SYE and DriveShaft! And it has given me nothing but smiles!!!!

These are measurements UJOINT TO UJOINT

BOLD ONES ARE LONGEST

XJ 87/88 2.5 Automatic 27.950 53003912
XJ 89/93 2.5 Automatic 27.970 53005540
XJ 89/01 2.5 Manual 25.310 53005541
XJ 89/01 4.0 Automatic 30.660 53005542
XJ 89/01 4.0 Manual 29.250 53005543
XJ 89/00 4.0 Manual 27.080 Export 53005544
XJ 89/00 4.0 Automatic 28.620 Export 53005545
XJ 87/88 4.0 Automatic Export 53005260 *
XJ 95/01 Diesel 27.640 Export 52098208

ZJ 1993 4.0 Automatic 30.530 52098341
ZJ 93/95 5.2 Automatic 32.870 w/o CV 53008427
ZJ 94/95 5.2 A500 30.625 w/o CV 52087805
ZJ 94/95 4.0 A500 w/o CV 52098790
ZJ 93/96 4.0 Manual 52098344
ZJ 93/96 4.0, 5.2 31.875 w/ 231, 242 52087805
ZJ 93/95 4.0 Manual 30.000 w/231 52088090
ZJ 93/96 5.2 33.000 w/ 231 53008427
ZJ 96/98 5.2, 5.9 31.250 w/ 249 & Model 30 52098379
ZJ 1996 5.2 Automatic 32.875 w/ 249 & Model 30 52098501
ZJ 96/98 4.0 33.000 w/ 242 52098707
ZJ 96/97 4.0 Automatic 31.250 52098850
ZJ 1996 5.2 Automatic 30.750 w/ 249 & Model 30 52099246
ZJ 96/98 4.0 33.500 w/ 249 52099260
__________________

How has the zj shaft held up? I have a 98' xj, ax15, np231, chryco 8.25. Getting ready to order a IRO hack n tap and Im trying to figure out which zj shaft to go with. Im at 3in of lift as well.

Jan 14, 2013 | 06:34 PM

#24

1998xjspt

CF Veteran

Joined: Oct 2012

Posts: 1,277

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From: Orlando/Winter Garden

Year: 1998

Model: Cherokee

Engine: I6

Quote:

Originally Posted by straightsixjeep

How has the zj shaft held up? I have a 98' xj, ax15, np231, chryco 8.25. Getting ready to order a IRO hack n tap and Im trying to figure out which zj shaft to go with. Im at 3in of lift as well.

okay, so let me see if i understand, when u measure ujoint to ujoint, lets just say its 30.1 (random number). does than mean you need to find a collapsed ds that measures 30.1? or a ds that has more room to compress and expand, 30.1 being the length when the ds is halfway compressed or expanded?

Jan 14, 2013 | 07:11 PM

#25

3THW

Newbie

Joined: Mar 2012

Posts: 14

Likes: 0

From: Albertville, MN

Year: 1999

Model: Cherokee

Engine: 4.0

The typical Cherokee front DS with have about 3" between fully compressed and fully extended lengths. At ride height you should be at half that. So measure center to center of the yoke seats and subtract 1.5" from that. Then get the driveshaft closest to that length.

FYI the IRO kit comes with a refurbished front DS from a 4.0 XJ with an auto so 30.66".