How To Install an SYE - A Comprehensive Guide - Rough Country

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In this video, Matt from BleepinJeep will show you how to install a Rough Country SYE or Slip Yoke Eliminator on the NP 231 Transfer case. I've done my best to make this a comprehensive guide with every possible scenario you might encounter while installing an SYE. This happens to be an NP231 transfer case from a Jeep Cherokee but should be the similar if not the same for Jeep Wranglers like the YJ, TJ, and JK or any other vehicle with a NP or New Process Transfer Case, although I'm not sure exactly how the NP242 differs. I hope this helps you on your install! Remember that the point of an SYE is to eliminate the slip yoke style driveshaft and therefore you will also need to purchase a new correct length double cardan driveshaft to install after the SYE.
Watch the Entire "Hope Floats" Build Playlist from Day 1: bit.ly/1oJBIe6
Rough Country Website: www.roughcountry.com/
NP231 SYE Link: www.roughcountry.com/np231-sli...
Rough Country RU-vid Channel: / roughcou. .
Rough Country TV - / roughcou. .
Rough Country Website - www.roughcountry.com/
All Of these Lift related videos brought to you by Rough Country
Entire Rough Country Video Playlist - bit.ly/1IhnNDB
Lift Components:
Pitman Arm- • How-To Remove a Pitman...
Sway Bar Links- • Sway Bar Disconnect In...
Track Bar- • How-To Install a Track...
Sway Bar Stud Removal- • Stuck Sway Bar Stud Re...
Long Arms- • Longarms Install - Rou...
Coil Springs- • How-To install Coil Sp...
Front Shocks- • How To Install Front S...
Remove a threaded stud- • How-To Remove a Stud
Front Brake Lines- • How-To Install New Fro...
Assemble Adjustable Joints- • How To Assemble Adjust...
Cross Member- • How To install a Long ...
Transfer Case Skid- • Rough Country Transfer...
Tie Rod- • How To Change a Tie Ro...
Steering Stabilizer- • How To Install a Steer...
Rear Brake Lines- • How To Install Rear Br...
Rear Shocks- • How To Install Rear Sh...
Leaf Springs- • How To Install New Lea...
Shackles- • How-To Install Shackles
More RC:
SYE- • How To Install an SYE ...
Driveshaft- • Double Cardan Drivesha...
Diff Cover - • RC Diff Guard Armor In...
Front Bumper - • Rough Country Front Wi...
Website: www.bleepinjeep.com
FaceBook: / bleepinjeep
This product is meant for entertainment purposes only. Your mileage may vary. Do not try this at home. Void where prohibited. Some assembly required. For off-road use only. Slippery when wet. Batteries not included. Do not use while operating a motor vehicle, heavy equipment, cherokee XJ, wrangler TJ, wrangler JK, or any Jeep vehicle, especially the newer Fiat ones. How-to videos may be too intense for some viewers and children under 30 years of age. Please remain seated until the 4x4 ride has come to a complete stop. Studies have shown viewing these videos causes increased cancer risks in laboratory test people. I am not a professional, I have no training, I'm not even particularly good at horse whispering. Don't believe everything that you know. Please keep your hands in the vehicle at all times. Do not tap on glass. Do not eat anything that has been on the floor for more than 3 days. Keep your hands to yourself. Not to be taken internally. Reproduction strictly prohibited. Driver does not carry cash. Objects in Bleepinjeep mirrors may be farther than they appear.
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14 дек 2014

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Комментарии : 353

@rcdiggs8875 4 года назад

6 years later and still one of the best videos out there for this job...

@bradfordjeff 3 года назад

He's still stuck under the Jeep though.

@calebberglund53 2 года назад

@@bradfordjeff hahahaha nice one

@atombom8214 Год назад

I'm just now doing this so I'm stoked for such an excellent video.

@WEESHBONE 2 года назад

I’m really grateful for all your Jeep insight and information. I actually tell anyone that has a Jeep problem or question to look you up on RU-vid. You rock!

@AW-xv7dq 8 лет назад

some people have a knack for teaching some don't You sir are very proficient at it Thanks

@mpeugeot 8 лет назад

Matt, thanks so much for this video, made doing this job on the TJ a breeze. I was tempted initially to do a hack and tap, but this is really the way to do the job. On the 98 TJ 231 that I had, I didn't have the needle bearings (as you suggest in the video it's a pre-98 thing). For others thinking about doing this, definitely dropping the transfer case is the right answer. The only change that I would make from Matt's directions is to disconnect the transfer case lever from the transfer case (using the nut as opposed to pushing the rod through the linkage. Also, I believe that the rubber spacer goes under the yoke, not over it. Once again great job with this video!

@jargonstarcraft9157 9 лет назад

This video is a perfect example of why I love this channel. Thank you so much for the upload. Fantastic content.

@bleepinjeep 9 лет назад

Jargon StarCraft sure, glad you like it!

@JustinWallaby 9 лет назад

Great timing Matt. I was just about to do an SYE on my 2000 xj. It was going to be my video submission. It's ok though because I'm doing a head and gasket replacement on mine due to a cracked head (0331 casting). I think that can be my video submission then. Keep doing what you are doing. This is the best RU-vid channel for anyone that has an XJ!

@jasonthomas3015 3 года назад

Matt ,just did my s.y.e on my 97 wrangler . Love you're videos . I apriciate theam very much brother. Thanks for helping get me back on the trails. Much love 👊🏼

@vonJaerschky 6 лет назад

Finally installed an SYE and Adam's driveshaft in my 91XJ. This video made me much more confident in being able to do the job. I did it with the transfer case in the Jeep. I have a 3" lift and 30" tires, and it was no problem getting underneath the Jeep to work on it (I'm a big guy). I had no issued doing the install with the transfer case still in the car. I'd do it that way again for sure. And talk about SMOOTH!!! All the vibes are gone, no clunks, just awesome smoothness. This was well worth doing. Thanks again for the video, BJ!

@BioVic78 5 лет назад

I'm going to try it your way of leaving the TC on the XJ. I don't want that TC falling on me like it did on him... lol

@RWH9mm 6 лет назад

Awesome video I just bought a xj 2 wheel drive I plan on converting it to a 4x4 all of your videos have been very helpful wish me luck. And I look forward to seeing more.

@goodmuzik419 9 лет назад

Love your videos, I watch them multiple times before replace anything

@basshunter428 2 года назад

Just a note: When seating bearings it's always better to start/drive it in with something that surrounds to bearing case (they sell bearing/seal installer kits). If you absolutely have to do it with the "tap and spin" method, use a brass/bronze bar as it is a lot softer than the bearing housing. Great vid! 👍

@vonJaerschky 6 лет назад

Best SYE video I've seen yet, and I think I've watched them all now, getting ready to install in my 91 XJ. Great to see this video featuring the old style NP231 with the needle bearings, like mine. Thanks!

@ronvandyke2484 5 лет назад

I recently purchased a 91 xj (limited) and I'm in the process of fixing it up. How was your SYE experience? Any hindsight is 20/20 scenarios?

@edwardpoland7209 4 года назад

How dose it hold

@tomd1939 8 лет назад

I've comented on this video before, but I just wanted to say thank you. I just got done swapping in a SYE from a junkyard 231 that I plan to put in my xj to replace the 242 that's in there now. and I never would have thought I could've done the SYE swap (or even pulled the transfer case) until this video. thanks Matt

@TheMuddman74 5 лет назад

Dude why would you swap a 231 for a 242?! The 242 is so much better because of all the options it gives you. Don't get me wrong the 231 is solid like the 242 but with less options. Most people want a 242 instead of a 232

@1981bundy 5 лет назад

Thanks bud!!!! always love ur vedios! Very helpful and u don't skip the hard stuff...keep making vedios and keep hitting those trails! 😁

@swinjesse6236 7 лет назад

Best explanation video on how to fix stuff,outstanding job. Two dumps up and job well done.

@jimmykosko 7 лет назад

That was really a good video, getting ready to see what's wrong with mine... sounds like my chain or bearings are bad. Still goes into 4 wheel drive, but makes that sound of a chain just running lose... or something worse. Either way you made me feel like I can tackle this... fingers crossed. Thanks

@redsock9378 6 лет назад

Great video with outstanding explanations on how to do this. But it also persuaded me to have a shop do......I know my limitations!

@MacSilvey 9 лет назад

this is easily the best channel on RU-vid!

@bleepinjeep 9 лет назад

Mac Silvey thanks!

@chiggyjiggy7019 2 года назад

Pulled my t case apart yesterday with help from this video.

@1917Enfield 8 лет назад

I found that the front driveshaft from a 1994 Grand Cherokee with a V8 engine is a perfect fit to replace the stock drive shaft on my XJ with this SYE. If you pick one up at a junkyard, have it completely rebuilt at a good drive shaft shop.

@cablenowadays6586 Год назад

The factory XJ front driveshaft will work in the rear. Ive been running one for years and I can carry a extra yoke and shaft and be able to fix the front or rear if one breaks.

@Nothingtoya 7 лет назад

Oh man, you really had me thinking the transfer case was heavy.

@ericmcelroy4156 7 лет назад

Great video! Was going to do a hack n tap but now thinking this is a way better option. Thanks Matt!

@michaelbennett9296 8 лет назад

@16:05 It looks like it might be a good idea to thread the yoke nut onto the output shaft, just in case the needle bearings don't have enough room to press out and you mushroom the main shaft.

@nikthepunisher6255 3 года назад

My most favorite RU-vid channel, I love xj or zj videos.

@marka.2715 9 лет назад

Hack-n-tap all the way! lol Great detailed video. If I go this route on my next build I know where to find good info. Keep up the great work and videos.

@bleepinjeep 9 лет назад

Ahh, it's not so bad.

@marka.2715 9 лет назад

Probably not. I am just lazy sometimes. My hack n tap is holding up well though so far.

@RoughCountryTV 9 лет назад

Great video.

@SomethingClever80 8 лет назад

thanks very much!, I trust your judgment I've been on your RU-vid page for a while now looking @ all your vids & you know your Stuff!

@rudyterry5075 6 лет назад

I know you're really busy with Camacheep but I got that passenger side top nut off with a stubby 9/16 wrench👍

@eliinthewolverinestate6729 7 лет назад

I always use a vehicle ramp and 2x4 to slide transfer case up and down. Stock jeeps may have trouble getting ramp under it.

@raudelillo 9 лет назад

Hello. Awesome video. My speedometer is a little off because im running on 33's. However I'm soon upgrading my gearing to 4:10 and it will be waaaay off. Can it be calibrated installing the gear you mentioned?

@andrdwboldt4014 9 лет назад

Helps a whole lot if you put the barrings in your freezer because metal shrinks in the cold but just leave in in there for an hour or two then it just slides in no hammering needed

@rileyblizzard2 5 лет назад

i just did this and put the rtv on the cases and locktite and torqued the bolts was about ready to put it back in the yj realized i forgot the spring so i had to take it all apart again hooray! also i hate snap-rings with a passion

@dembrowi_n_c.5111 9 лет назад

as long as you don't have locking hubs the transfer case will always spin at the same or close to the same rate as the main shaft. Does that make it ok to not run bearings in the hi-lo gear? what about jeeps with warn hubs, does that increase wear. Popping the bearings out just kinda seems wrong to me

@TheCzechmate007 7 лет назад

When I was a mechanic, I used to freeze the bearings in the freezer before placing them in their seat. They would just pop in without any hassle...

@ChewieAndChico 2 года назад

How did you have the time?

@TheCzechmate007 2 года назад

@@ChewieAndChico What do you mean? You know you are going to change the bearing, so you place it in the freezer an hour or two before you need to put them in... no waiting time involved...

@richardeberline3585 2 года назад

Its called sweating in the bearings

@TheCzechmate007 2 года назад

@@richardeberline3585 thanks, didn't know it had an English idiom...

@ChewieAndChico 2 года назад

@@TheCzechmate007 I come from a production shop. When the bearing comes in from the parts store, it goes in. I don't have time to put it in the freezer lol

@geraldhoward6881 4 месяца назад

Great video Working on a 2001 tj Many thanks

@thomasshemro7584 5 лет назад

Just installed mine. Shifter in 2hi dash and transfer case say part time 4x4 I'm assuming I need to trim my shift rod?

@joemercurio9456 9 лет назад

Wow this is a way bigger process then I was expecting. I was going to order one of these soon for my lifted xj but I'm not sure that'd Id be able to put all this back together properly lol

@bleepinjeep 9 лет назад

Joe Mercurio just invite some friends over and set up the bigscreen in the garage with bleepinjeep on.

@spitfire7738 9 лет назад

Sweet timing; my SYE is supposed to be delivered today and I was going to search if you had an SYE video anyway.

@bleepinjeep 9 лет назад

Spitfire 77 awesome timing!

@mikester9er 9 лет назад

Same here, I was lucky to see that this video was posted just 5 days ago!

@1740-garage_ 5 лет назад

When you do the rc sye kit what rear drive shaft do you have to use I got a 99 xj

@JonsMotorcycles 9 лет назад

Is doing the SYE necessary for adding a lift kit? I bought mine used (93 YJ) with a 3.75 inch lift and i was going to switch to a RC 4.5 inch.

@Adrenalineoffroadad 2 года назад

Thanks bleepinjeep best informational video and so funny when you pull out the transfer case lol

@NGWrenchin 7 лет назад

Hey Matt, I'm looking to get this SYE for my 97XJ. I have a 3.5" lift (OME rear leafs, RE front, both at 3.5" lift advertised) and was wondering if I could use this SYE and a stock front driveshaft? If not do you know how much I would need to have a stock driveshaft lengthened? Thanks for all the awesome and helpful videos!

@battlejack1863 5 лет назад

nice they came up with this improvement to eliminate that damn harmonic balancer

@Turkish20 8 лет назад

Hey Matt and bleepin jeep crew! I am looking at installing a 3" rough country lift with new leafs and coils and 31" tires. Is a SYE required or not? I read different views on this. Same thing with lower control arms and brackets for sway bar. Thanks!

@jessefulton9631 8 лет назад

hey I gotta prob, np 242 is not engaging the rear tires, only the front spins...the rear is welded up..wondering if anything in the transfer case would cause this.

@northwesthappz5033 4 года назад

Looking to do this upgrade and do you know what gear size I would need to get for my speedometer to match my tire size (35") 99 jeep xj

@Motoman714. 5 лет назад

Hey Matt do you have a link to where you can get plugs for the t case. I have those ratchett plugs in one of mine is roasted and I don't really like using those brows wondering what size Bolt those are

@ebutuoy8272 9 лет назад

Awesome vid. Looking at doing this my XJ in the near future =)

@adamswaz4878 7 лет назад

on the np231 with the rubber dust cover on the back side of the transfer case how do you remove the shaft once everything is split open its not like this style where you take the metal casing off then remove the snap ring. any input

@matthewmartin6232 7 лет назад

Do you ever run into a common leak spot on the p231 transfercase? I have a p231 t-case and can't find the leak. I replaced all the seals and still leaks.

@tylercurtis441 5 лет назад

Hey man i got a few ?s for yah..... i have a sye on my 01 cherokee sport w a 4.0. Will the stock national seal from the parts store still fit or do i need a seal from rc, mycase extension looks just like the new one you put on. My seal is bad there and i need to find the correct part

@Abernathy1162 6 лет назад

Excellent Video. Thanks Matt

@rudyterry5075 6 лет назад

Hey Matt can you help. How did you get the upper passenger side 9/16 nut out? I'm having a hard time getting it out.

@jimbo11596 7 лет назад

can this be done to an NV242? I want to do this to my '04 WJ in prep for a lift.

@dynastycrew824 3 года назад

I have 2000 cherokee, and I'm doing the cv joint driveshaft that you did in a video, will I have to do this aswell or is it for earlier models

@hangittotheleft1171 8 лет назад

is there any other way to push out out those needle bearings? like with a rubber hammer? i dont have a press machine...

@chadbrooks388 6 лет назад

Did you do a 1.25 chain upgrade if so where did you find the front output shaft

@martintaylor984 7 лет назад

Best DIY videos on RU-vid I think!!!

@bleepinjeep 7 лет назад

no thinking about it;)

@jasonpfeifer8820 9 лет назад

Can you please explain how your steering works since you tapped it for hydraulic steering

@rzonly1 9 лет назад

Hello! I have a 242 and the transfer case exploded. I got a new transfer unit. I want to take my SYE kit and put it on the new/salvaged case. Is it basically the same here in this video?

@jakevision6859 9 лет назад

What do you do if the crossmember bolts start to break/Get stuck in the unibody frame rail please help. Thanks great video like always: )

@1598hi 5 лет назад

When you cut the rod did you put it in 4hi it 4lo. And do 97+ cherokees need to be cut?

@christophervillareal6151 3 года назад

Do I need to install an extended rear drive shaft with this for a 2” lift??

@Ikillintel1 3 года назад

I know the video is old but, I have a question, 87 YJ w/ NP231J , I have a RC SYE kit that came with my 6" lift kit and it came with a new output shaft. I also ordered a new AX15 transmission from Advanced Adapters that also came with a new heavy duty output shaft...which one should I use when I install all this stuff. Thanks.

@dannykyle738 6 лет назад

When installing the new bearing shouldn't it be better to use a piece of wood over it and hit the wood with the hammer? That's what I've always done when installing any sort of bearing.

@zacharybarlow3960 9 лет назад

Do I have to use the OEM RTV that Rugged Ridge says to use?

@jalatecompa 4 года назад

hi i own an xj 2001 4x2 so i wan 4x4, can i only adapt a transfer case to my stock transmission to avoid swap transmission. i have the front axle and front cardan, rear cardan can be shortened

@MrSrtman18 Год назад

Thanks for the breakdown Matt!

@bleepinjeep Год назад

Any time!

@ericmorrissey4137 7 лет назад

I did this to my 99 tj but now I have some serious violations. If you could help me on how I could fix it. Please and thank you.

@isaiahwoodbury5205 3 года назад

So i just tore apart my transfer case and then inside doesn’t look the same at all. I’ve decided to just get a new transfer case from the junk yard. But. Do you know what year transfer cases will work with this SYE kit?

@fabioorsatti9715 4 года назад

Hey Matt, do you think I have to replace this part (26:34) to use 32" tires?

@chuckybrenaire6023 7 лет назад

Great Enjoy your videos! Greetings from the Philippines.

@thermotesticles2453 9 лет назад

best comprehensive guid ever, it even covered the parts where i'm gonna be complaining about how heavy the transfer case is and when i get stuck too. i will be doing this in a couple days hope everything goes smooth. btw can i put on the SYE with a 4-6" lift cv driveshaft before i get the lift or should i do it all together ? i'm looking at getting a 4.5" for cherokee.

@bleepinjeep 9 лет назад

Do it at the same time

@insertstupidusrname 6 лет назад

Ha, yeah same. I spend a good 30% of my time cursing at my Jeep and CT winters that rust-welded half the bolts together.

@gazzelle187s4 6 лет назад

Hey i was wondering if you could or have made any videos of doin a 5spd swap id like some ideas on hanging the pedals if thats any interest to you

@bbbshelton7 3 года назад

Can I replace the output yoke that connects to the front driveshaft? That is the only part I need replaced.

@uncleben03 9 лет назад

When I did my SYE, putting that snap ring retainer back on the output shaft to keep the gears on was the biggest pain in the ass too!

@longhorn8459 4 года назад

uncleben03 me too. I had an old set of snap ring pliers and they were a challenge. Anyone doing this I would suggest buying medium to large sized pliers from a good brand to make this a breeze!

@samshipps 8 лет назад

For some reason I didn't have to cut that stud down, mine at its highest point was at one inch. Hopefully I did it right!

@gatordave6629 3 года назад

Hey I'm doing my first build a 3.5 inch lift which will really sit like 4 inches is this nesacary to adjust caster and pinion angles I dont understand caster and pinion angles really what is the actual point of a SYE

@kwells4438 7 месяцев назад

Where can I find the splined Yoke seals? Also wanting the 2 C clips that are on both sides of the speedometer drive? How much slop in the chain is OK?

@TheMxkid29 9 лет назад

What does it mean when its pretty hard to turn the shaft and the chain with my hand.

@nrhicks565 5 лет назад

Very detailed. Great job.

@thefrugaljeeper4054 4 года назад

It looks difficult. But well worth it. How much will it cost to have it done at a shop?

@MikeOrazzi 2 года назад

So, does my 01 XJ with a 3 inch lift need this too?

@wherestarget1607 10 месяцев назад

@BleepinJeep does the chain ever make a popping sound when under duress in 4 low?

@ClintMattoni 7 лет назад

Has anyone had any trouble with the housing directly below the yoke not fitting correctly? My mechanic is having trouble with it not fitting. It's directly from Rough Country and I'm trying to sort out if they sent us the wrong parts. Any feedback is appreciated.

@ponti.lee_3606 7 лет назад

my biggest problem is getting the front drive staft bolt out i broke two of the lose with a 8mm ratchet wrench with a pipe but i striped other two out. dose anyone have any ideas to get the others out please lmk

@kylecochran5088 9 лет назад

Please do a rear main seal video!!!!!!!!!! Thank you!

@4931lmon 2 года назад

Is transfer case the same for the manual? I have a kit that is in one from a automatic.

@pahasapaman 4 года назад

You had an impact, but used a breaker bar to remove the Yoke?

@buschmaster4600 Год назад

Does the shift rod only have to be trimmed on the 96 and older 231s?

@coachgeo 2 года назад

crazy idea... take a standard SYE kit.... but cut end and install a hack-n-tap it......would it end up with enough of longer drive shaft to be worth it?

@autotek7930 2 года назад

Can you use your stock driveshaft with this kit? Also where y'all get good driveshafts at?

@absentmindedful 19 дней назад

Damnit ... I am diggen the knuckle guard on that punch... Oh, great video.

@liamaaronduran 5 лет назад

Well it's not really a slip yoke is it in the original one? The yolks are captured to the shaft with that large 28- 32 mm nut? At least on my 2018 jku both sides yoke is captured with a nut I believe.

@paulatreides2325 7 лет назад

I use a brass hammer to seat bearings. It stops any dimpling of the race.

@autotek7930 2 года назад

Also is there a reason y'all used the red silicone? Over the years I've always seen the red leaking no matter what it's on....I use the ultra grey on everything and zero leaks even after years of service.

@fluffymyster2 3 года назад

What snap ring tool did you use

@RaBBiiT666 6 лет назад

Does anyone know if i need it on a 247 t case?

@rebekahleonard3266 2 года назад

Is the sye the same for 231 and 242 transfer case?

@bulletproofpepper2 8 лет назад

Thanks for sharing. I need to do this up grade. Mine is a 1997 dodge Dakota and it uses the same transfer case or one very similar. Great video.

@JoshChizzy 8 лет назад

If you put a lift on your truck then yes.

@bulletproofpepper2 8 лет назад

yes it is lifted

@JoshChizzy 8 лет назад

+sam yeates A SYE is recommended for all lifts as it changes the angle of the shaft. I'd do it if I was you. If you don't, you can get some wobbles from the drive shaft that'd eventually break apart.

@JoshChizzy 8 лет назад

+sam yeates A SYE is recommended for all lifts as it changes the angle of the shaft. I'd do it if I was you. If you don't, you can get some wobbles from the drive shaft that'd eventually break apart.