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[Sweatyfox]

Hello again,

Well following on from the additional suspension lift/brake line post, I need some education on SYE (slip yolk eliminators) as I believe I will need to fit one.

I understand that with lifting a jeep around 4 – 5” you will create transmission vibe (I already have it with my 2.5” lift) due to making the joints work at a sharper angle, and that it can cause serious & permanent damage if you don’t do something about it.

Fitting a SYE will remove the current vibration I have when pulling away, but how exactly do they do this?

I don’t want to lower the transfer box as I want to maintain as much ground clearance as possible underneath as im always bashing this on things and often end up like a sea saw and need to get recovered.

Anyway, heres my list of questions

Will this be the same strength or stronger than the original joint?

Will it remove my vibration completely?

Where do I get these from? Im in the UK

Will there be anything additional  I require?

And how easy is it to fit a SYE? I understand theres 2 types, one where you pull the transfer case to bits (not something I’d trust my self to do) and the other one involves modifying the existing parts?

Also, what are degree shims? I havent got a clue.

Thanks for you help

[Mik]

Hello again,

Well following on from the additional suspension lift/brake line post, I need some education on SYE (slip yolk eliminators) as I believe I will need to fit one.

I understand that with lifting a jeep around 4 – 5” you will create transmission vibe (I already have it with my 2.5” lift) due to making the joints work at a sharper angle, and that it can cause serious & permanent damage if you don’t do something about it.

Fitting a SYE will remove the current vibration I have when pulling away, but how exactly do they do this?

Using a prop which negates the need to align your pinion shaft and trasfer case output shaft parallel

I don’t want to lower the transfer box as I want to maintain as much ground clearance as possible underneath as im always bashing this on things and often end up like a sea saw and need to get recovered.

Anyway, heres my list of questions

Will this be the same strength or stronger than the original joint?

Joints are the same size but the output on the tranfer case is stronger

Will it remove my vibration completely?

Set up correctly - Yes

Where do I get these from? Im in the UK

Direct from Tom Woods or Advance Adapters (USA)

Will there be anything additional  I require?

Dexron 2 ATF and the ability to follow instructions

And how easy is it to fit a SYE?

A talented friend and a ramp/pit will help

I understand theres 2 types, one where you pull the transfer case to bits (not something I’d trust my self to do)

Buy this type

 and the other one involves modifying the existing parts?

Don't buy this type

Also, what are degree shims? I havent got a clue.

They fit between your leaf springs and your axle to rotate it and acheive proper pinion/propshaft alignment

Thanks for you help

You're welcome

[Mike Pavelin]

Before you resort to an SYE, if you're staying at 2.5" for a while, adding degree shims will do the job.

[Dave69]

i made some 3 degree shims for my 3.5 lift, reduced the vibrations, and saved alot of hassle for another day when i might get round to fitting a sye

[daggie]

if you have a np242 t/case, as far as I know, its a hack'n'tap.
but that was a few years ago

[Mike Pavelin]

Still the case. Hack'n tap only for the 242,

[Mik]

Still the case. Hack'n tap only for the 242,

Mr Pavelin    Bad form

Tom Woods 242

[Mike Pavelin]

......but that's what a hack'n tap is, but in this case you pay Tom Woods to saw the end off the mainshaft and drill a hole in the end for you.  

[Mik]

Mike, Ive got to say Im really dissapointed in your replies here. You are not helping our friend with your misleading and vague replies.

The Hack'n'Tap solution, as available from Rubicon Express does nothing to boost the strength of the output arrangement.

Tom Wood's SYE cuts all of the spines off the stock shaft and creates new splines deeper inside the tcase, and the new yoke gets sandwiched against the inner race of the tcase output shaft bearing, housed in a new, stronger output case...making it a lot stronger.

Whilst not as strong as the HD 231 SYE it is quite patently not the same as the Hack'n'Tap.
I'm confused as to why you might state that it is ?

[Mike Pavelin]

Never mind. Can't be arsed anymore. A bit academic unless we know what T/C we're dealing with here anyway.

[Mik]

Most of the time Ive nothing but the utmost respect for you Mike, I really admire the effort you put into helping fellow Jeepers and the depth of your knowledge.  

Sometimes you're just an arsey wanker.

[Dave69]

the hack and tap can be strong it all depends on who is doing it and what machinery they have to hand

[greggmo]

calm down guys :lol:

[Dave69]

choose your weapon


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