View Full Version : Output SHaft for Np 231 Transfer case


MuddyJeep01
12-04-06, 11:33 AM
im in need once again for a output shaft (stock one) for my 2001 Tj manual trans....... anybody have any information please let me know thanks.... Jay

Mtbikbob
12-04-06, 12:30 PM
im in need once again for a output shaft (stock one) for my 2001 Tj manual trans....... anybody have any information please let me know thanks.... Jay

Good time to upgrade...... The Teraflex works great. http://www.teraflex.biz/pages/jeepbuilder.php?jeepID=18&prodID=93&subID=6

Materdaddy
12-04-06, 01:02 PM
Good time to upgrade...... The Teraflex works great. http://www.teraflex.biz/pages/jeepbuilder.php?jeepID=18&prodID=93&subID=6

Although if you get that Teraflex extra short one, you need an electronic gismo to get your speedo correct. If $$$ is a concern, and you don't have a reason for the "extra short" output shaft, just go with a standard AA (Advance Adapters) SYE to strengthen your output shaft. $475 shipped...:

http://www.northridge4x4.com/proddetail.php?prod=PKG-AA-SYE-CV

Mtbikbob
12-04-06, 03:35 PM
Although if you get that Teraflex extra short one, you need an electronic gismo to get your speedo correct. If $$$ is a concern, and you don't have a reason for the "extra short" output shaft, just go with a standard AA (Advance Adapters) SYE to strengthen your output shaft. $475 shipped...:

http://www.northridge4x4.com/proddetail.php?prod=PKG-AA-SYE-CV

Good call Mat. However the website left me wondering what is included in the kit. The C.V. joint complete? The new slip driveshaft assembly? The gear drive for the speedo? Just wondering.

However Muddyjeep, there may be guys out there who still have their stock one after they did their own conversion.

Bob

Materdaddy
12-04-06, 05:27 PM
Good call Mat. However the website left me wondering what is included in the kit. The C.V. joint complete? The new slip driveshaft assembly? The gear drive for the speedo? Just wondering.

However Muddyjeep, there may be guys out there who still have their stock one after they did their own conversion.

Bob

The AA SYE comes complete with a gear drive for the speedo. It's got a new tail housing for the NP231 as does the "extra short" one, but the AA one isn't quite as short. It has everything you need to get rid of the slip yoke. The link I showed you also includes a CV (double cardian) type shaft. I ordered mine a couple weeks ago, but won't be putting it on until some time next year.

You'll also want to get upper adjustable control arms so you can adjust your pinion angle. The pinion angle is important because with a regular shaft, you want the pinion angle to be parallel to the transfer case's output shaft, and the U-Joints will offset each other's vibrations as long as your operating angle is within about 13 degrees (I think...). With a CV type shaft you need to have the pinion angle parallel with the shaft itself and the CV portion will take the angle needed from the output shaft...

Most people do the SYE kits to eliminate driveline vibes when lifting their Jeep too high, but you might want to do it because all SYE kits (that I know of... other than a hack-n-tap) have a much stronger output shaft.

EDIT: Another reason you might want to choose this SYE/CV combo is that there's tons of information online about how to install it yourself:
http://www.4x4xplor.com/SYE-CV.html
and even a video:
http://www.crgrissom.com/jeep/SYE.wmv

paulhead
12-04-06, 11:55 PM
My first upgrade. I was a goober a did a WRITE-UP (http://marz.org/mods/sye_ph/index.shtml) on it.

MuddyJeep01
12-10-06, 04:43 PM
the thing i am running into problems with is the fact that my jeep doesnt have a suspension lift on it anymore so i cant just order a driveshaft from a mag..... im going to have to get one mad local.... so what is yall's thoughts on that ??

Materdaddy
12-10-06, 06:13 PM
the thing i am running into problems with is the fact that my jeep doesnt have a suspension lift on it anymore so i cant just order a driveshaft from a mag..... im going to have to get one mad local.... so what is yall's thoughts on that ??

You might be OK with one from a kit, like the one I posted from Northridge4x4. Give David a call. His might work with a stock setup. I'm not sure how much the slip joint in the shaft moves, but it might fit a stock height Jeep. I'm hoping it'll fit my budget boost with D35, D44 next year (shorter driveshaft as the D44's pinion is longer), and then OME lift after that for my (hopefully) final height!

Elusive
12-11-06, 08:49 AM
has anyone here actually broken an output shaft?
I have been running mine for years and breaking everything BUT the output shaft I hack and tapped 5 years ago....and thats with a 4-1 kit.

MuddyJeep01
12-11-06, 03:00 PM
has anyone here actually broken an output shaft?
I have been running mine for years and breaking everything BUT the output shaft I hack and tapped 5 years ago....and thats with a 4-1 kit.


this is the second one i have broke

Materdaddy
12-11-06, 05:09 PM
has anyone here actually broken an output shaft?
I have been running mine for years and breaking everything BUT the output shaft I hack and tapped 5 years ago....and thats with a 4-1 kit.

I know Mtbkbob BENT his, which could lead to breaking it, like this guy:
http://www.jeepforum.com/forum/showpost.php?p=1827288&postcount=31

MuddyJeep01
12-12-06, 09:38 AM
could somebody help me find out if i can go with a slip yoke eliminator kit or should i just go back with a stock output shaft??

Materdaddy
12-12-06, 09:57 AM
could somebody help me find out if i can go with a slip yoke eliminator kit or should i just go back with a stock output shaft??

As I stated before, call David at northridge4x4. He's a very friendly guy and should know weather the shaft from the kit will fit your stock height jeep. Here, I'll even post the phone number for you:

Tel: (360) 340-0282
Monday - Friday: 9am - 6pm PST
Saturday: 9am-5pm PST

TJ Rick
12-12-06, 10:55 AM
I agree with Materdaddy. David is very knowledgable and helpful. Or you could call Tom Woods direct http://www.4xshaft.com/index.html They treated me very well also. I am pretty sure you you can run an SYE at stock height but either of these 2 sources can tell you for sure and what you'll need to do it.

paulhead
12-12-06, 12:18 PM
I'm pretty sure you should'nt run an SYE without a lift. Even so because of the angle you'd probably have to lengthen the shaft when you do add a lift kit.

Materdaddy
12-12-06, 01:40 PM
I'm pretty sure you should'nt run an SYE without a lift. Even so because of the angle you'd probably have to lengthen the shaft when you do add a lift kit.

The shafts expand a little over 3" at the slip joint I believe. I doubt that's more than you'd need when flexing. The shaft should work for a range of probably around a 2" difference in lift height, the question is, does it work with no lift to around 2" of lift, or 2-4" of lift, or am I way off??? This is the type of thing that David at Northridge, or Tom Woods (as somebody else suggested) would be best qualified to answer.

I'm guessing the right shaft could work with and without a lift kit, the question is, what shaft is that? One of these "generic" kits, or a special order one? If so, he might need a new shaft after lifting, but at least he'd already have the SYE in his transfer case!

MuddyJeep01
12-17-06, 05:29 PM
i talked to the guy at northridge and he said the kit will work i will just have to measure from yoke to yoke and he will make me a drive shaft and send it to me

Materdaddy
12-17-06, 09:06 PM
i talked to the guy at northridge and he said the kit will work i will just have to measure from yoke to yoke and he will make me a drive shaft and send it to me


David's a really nice guy! My order got a tiny bit messed up and he was going to pay $82 to have my shaft shipped overnight! He threw in a free t-shirt too. I told him I wasn't in a hurry, so save the shipping and just send it ground. He was greatful, but I didn't need it in a hurry, so no biggie!

freewaydan
01-17-07, 05:03 PM
I got mine from these guys, kit was easy to deal with

http://www.jbconversions.com/pages/

Beat98TJ
02-26-07, 10:40 PM
JB conversions all the way. Last time I checked the original kit was on sale for $200. If you can use it it is damn good.

I went from hack and tap, to JB standard to JB super short. I really liked the JB standard length kit.