Advance Adapters 50-7906 1310 Yoke Drive Shaft Angle Reduction (Slip Yoke Eliminator) Kit for NP231 Transfer Case
$272 USD
Reduce driveline vibration on lifted vehicles with this Heavy Duty Slip-Yoke Eliminator Kit for Jeep's NP231J transfer case. Transfer case tailshaft length is reduced by 6.5" on '97-'06 Wranglers and 4.25" on '88-'95 models resulting in improved driveline angles. Kit includes a redesigned transfer case mainshaft which is not only shorter but has an 18% larger spline diameter, a 54% increase in torque capacity.***Requires a longer driveshaft, which is available separately Only works with NP231 transfer case.
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1 - 10 of 29 Posts
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Joined·5,378 Posts
when it comes to your driveline its kind of important to do it right. lets look at this in two parts.cbowles said:
first, the benefits of the SYE (Slip Yoke Eliminator kit)
1. the kit replaces the factory output shaft with a shorter and generally beefier unit
2. the new tail cone and yoke will seal the transfercase. Why is this good? if and when you throw or break a rear driveshaft or u-joint, you can drive the Jeep in 4wd (front wheel drive) to get it home. you cant do this without the SYE as the slip yoke on the drvieshaft is the only thing keeping the fluid in the t-case. without it, you will be puking fluid all the way home and will likeley destroy your T-case. trust me, it happened to me.
3. the SYE kit will usually come with all new seals for the t-case.
4. the SYE will allow you to run a longer driveshaft. this will cut down the driveline angle, thus reducing vibrations and u-joint wear and tear. I was lifted with 3.5"s of suspension and 2" shackles, right the suspension height you are looking at. I did not do an SYE intiially. I was blowing a rear u-joint practically once a week, and as I said, from driving it in front wheel drive with no means of keeping the fluid in, I grenaded my t-case.
Now the benefits of the CV driveshaft
1. basically when you do the SYE, you need to change to a CV shaft with a slip joint on the shaft since you are eliminating the slip yoke. the driveshaft needs to be able to extend and collapse as the suspension travels.
2. With the CV shaft, the CV joint will overcome any additional angle issues you may have, and with that much suspension lift, you will need it. the benefit is you should not have any vibes from the rear driveline.
below is a picture for reference. these are both front CV driveshafts from a Jeep cherokee XJ. these are a good option because they are relatively strong, they are cheap and easy to find in most junkyards, they use the same u-joints that your YJ uses, and most shaft shops will cut them down for you for around 50 bucks. the top one in the picture is the one I use in my YJ, the bottom one is stock length. you can see the difference between these and your stock shafts.
I hope this helps, and if you have any more questions please ask
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Joined·9,900 PostsWhat else do you have to fit the 35" tires on the 4" of lift?
Do you have an SYE (Slip Yoke Eliminator). Do you have a T-case drop. Do you have long or short arms? Do you have combo body-lift / suspension lift to fit the 35" tires or is it all suspension?
From there, we might be able to help a bit more. :thumbsup:
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Getting a SYE would be the best thing to do, next to getting a t-case drop. Before I didn't care and told myself: "I don't need a SYE, who needs that little extra clearance?"; Last time I went rock crawling I left a nice gash on my t-case skid and I'm almost certain it never would've happened if I had a SYE.... and a good spotter! haha
http://www.quadratec.com/products/52301_910.htm
&
http://www.quadratec.com/products/52237_99_07.htm
&
http://www.quadratec.com/products/16066_00.htm ( body lift recommended )
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I need some advice on purchasing a slip yoke eliminator for my 01 tj sport I-6 with d44 rear. Ive recently bent the output shaft on the transfer case and I have been having trouble identifying what model of transfer case i have. I was going to put a slip yoke eliminator on to not only fix my problem but prevent it from happening again.
Ive only found 2: Omix-Ada, Advance Adapters
Also what all is involved in installing the slip yoke eliminator? What drive shafts work best with which sye? And roughly how much am i looking at spending in parts?
Edit: Any full kits including the drive shaft other then the Full Traction kit? -
Joined·2,689 Posts
If your Wrangler has the factory transfer case, it's an NP231.
I bought the Advance Adapters one for a little less than $200.
From Stu-Offroad: TJ SYE Installation
Any proper length double cardan driveshaft (often mistakenly called a CV driveshaft) will work.
How much you spend is up to you. Google is your friend.
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Joined·25,544 PostsHere's some SYE info. Make sure to shop around.
AA Slip Yoke Eliminator for the Jeep NP231 Transfer Case
Advance Adapters 50-7906 - Advanced Adapters Drive Shaft Angle Reduction (Slip Yoke Eliminator) Kit for NP231 Transfer Case - Quadratec
The purpose is to allow for using a longer drive shaft, which helps with decreasing the angle.
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Joined·850 PostsIt;s not expensive from what i've seen.
Are we talking about this one?
Advance Adapters 50-7906 - Advanced Adapters Drive Shaft Angle Reduction (Slip Yoke Eliminator) Kit for NP231 Transfer Case - Quadratec
Any opinions on thie RR sye?
Rugged Ridge 18676.70 - Rugged Ridge Mega Short Eliminator Kit for 87-06 Jeep® Wrangler YJ, TJ & Unlimited with NP231 - Quadratec
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Joined·203 PostsAlright, guys... Here's my plan, tell me if I'm way off here.
Advanced Adapters SYE kit: http://www.quadratec.com/products/52237_99_07.htm
Tom Woods DS, Quadratec has one, but not sure if it's a CV or not. It looked like it might be, but it might be worth calling TW's shop instead. http://www.quadratec.com/products/52301_901_07.htm
And if I can find Bersk I'll get a set of his shackles, if not I'll buy the 1" lift shackles from BDS. I've got a set of jackstands and a floor jack now, so hopefully I can do part of this on my own.
When the SYE and DS go in, the t-case drop will be pulled off.
Thoughts?
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I have an 87 4 cylinder. 1" body, 2" suspension and 1" shackle lifts. I am almost finishing my prep on the 8.8 i got for $100. I got a front shaft out of a '98 Grand Cherokee for $20(needed a new spicer) So before I have the 8.8 welded up I need (or want) to install an SYE. Which one do i go with?
http://www.quadratec.com/products/52237_99_07.htm
http://www.thejeephut.com/np231-sli...-kit-1988-2006-jeep-wrangler-by-rugged-ridge/
http://www.4wheelparts.com/Drivetra...aspx?t_c=12&t_s=512&t_pt=7779&t_pn=TER4444400
There are others, I just didnt put them here. I am looking for a middle of the road; not the best and not the worst.
So many to choose from?
Are there kits for the spring plates and shock mounts that i need? What else should I be looking for?
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1 - 10 of 29 Posts
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