JBA Y-Link Extension

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

mx3_ryder

Full Access Member
Joined
Jan 27, 2014
Messages
351
Reaction score
1
Location
troy VT
Could someone tell me if this would be a good upgrade for me. I have a 3 inch lift and soon in need of a new rear upper control arm and after seeing this thought I may add one at the same time. I won't gain any height with this extension correct it just relieves stress from the control arm and bushings?

Y Link Extension
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
Could someone tell me if this would be a good upgrade for me. I have a 3 inch lift and soon in need of a new rear upper control arm and after seeing this thought I may add one at the same time. I won't gain any height with this extension correct it just relieves stress from the control arm and bushings?

Y Link Extension

No extra height really although with the tri-link in a bind it does keep the back down some.
On Johns when we installed his, it actually sat higher after we installed the tri-link extension.
It was on a bind that much
So yes it is a good investment
I'll be going this way with 2.75 inch on my 03 Down Low buildup PLEASE NOTE : THIS IS NOT ON JOHNS KJ
You must be registered for see images attach
 
Last edited:

JasonJ

Full Access Member
Joined
Jul 8, 2013
Messages
1,521
Reaction score
51
Location
Michigan
Tomm, that picture you posted, I presume of John's Liberty with the y-link extension installed, does not look at all like what is in the installation instructions PDF JBA has posted.

Are those adjustable tube links a separate part to be purchased, to replace the ugly **** boomerang bracket in the back?
 

dude1116

Full Access Member
Joined
May 31, 2011
Messages
3,373
Reaction score
13
Location
Pompton Plains, NJ
I have it. Was a ***** to install and I don't quite understand the deal with all the washers. It definitely helped the angle of the tri link but didn't quite tilt the axle back to center like I thought it might.
 

mx3_ryder

Full Access Member
Joined
Jan 27, 2014
Messages
351
Reaction score
1
Location
troy VT
I have it. Was a ***** to install and I don't quite understand the deal with all the washers. It definitely helped the angle of the tri link but didn't quite tilt the axle back to center like I thought it might.

I do believe you would need the adjustable 4 link to get axle back to center.
 

John3seventeen

Full Access Member
Joined
Jul 20, 2013
Messages
1,323
Reaction score
1
Location
WV Panhandle
Tomm, that picture you posted, I presume of John's Liberty with the y-link extension installed, does not look at all like what is in the installation instructions PDF JBA has posted.

Are those adjustable tube links a separate part to be purchased, to replace the ugly **** boomerang bracket in the back?

That is Toms Jeep with the new setup. The tri link extension doesnt replace the upper control arm this setup does but is more expensive
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
I have it. Was a ***** to install and I don't quite understand the deal with all the washers. It definitely helped the angle of the tri link but didn't quite tilt the axle back to center like I thought it might.

It will get it back to stock angle if you set it up correctly , thats what the washers do , for setting the angle
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
Tomm, that picture you posted, I presume of John's Liberty with the y-link extension installed, does not look at all like what is in the installation instructions PDF JBA has posted.

Are those adjustable tube links a separate part to be purchased, to replace the ugly **** boomerang bracket in the back?

This of mine, if you read I stated this was what I will be using on my next full build
Johns had what you were talking about , the tri-link extender
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
Little quick lesson on setting up driveline / phasing
Too many lift and then have vibrations from not setting the angles of everything from the rear of the trasfer case to the rear diff
here are a couple of pictures to help
You must be registered for see images attach

You must be registered for see images attach


So with the Tri Link extender you want to sit the rear diff in lie with the output of the transfer case
I know from working on my 04 so much exactly the number of degrees it needs to be to be in perfect sync so I set it accordingly
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
The bracket did come with this, but I wasn't really quite sure how much angle I needed. I assume more angle for more lift, correct?

Since I have 3.5 inches in the back, should i set it up closer to picture 2?

For just a moment forget the washers
Remove them completely
NOW sit the rear diff up according to the pictures I posted
Then see how many washer it will take to achieve that ( washers between both brackets)
Going from someone else picture is a guess that his and your's are exactly the same
Don't get hung up on how many washers are shown in the instructions, set yours up the way it should, each maybe a little different
Of course flat on the gront or sit up level on jackstands with out the rear diff hanging down
 
Last edited:

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
another picture is worth a 1000 words..............well hopefully for some it is
You must be registered for see images attach
 

dude1116

Full Access Member
Joined
May 31, 2011
Messages
3,373
Reaction score
13
Location
Pompton Plains, NJ
For just a moment forget the washers
Remove them completely
NOW sit the rear diff up according to the pictures I posted
Then see how many washer it will take to achieve that ( washers between both brackets)
Going from someone else picture is a guess that his and your's are exactly the same
Don't get hung up on how many washers are shown in the instructions, set yours up the way it should, each maybe a little different
Of course flat on the gront or sit up level on jackstands with out the rear diff hanging down

Got it. What's the best way to level it out, though? Throw the axle on jack stands then jack up and down as necessary?
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
On mine I can get under it sitting flat on the ground
( and most all that are lifted here)
so then just either raise or lower the front of the pinion on the rear diff to get it level with the output on the transfer case
Many times this can be achieved by just rolling the jeep forward or backward a small amount, ( with the jeep in gear of course )
This allows the Jeep to rock back and forth a small amount , I've just used my knee many times to move it
OF COURSE there are always times when a jack maybe needed to move the front of the rear diff down some
After you get it where it looks right, then measure between the brackets, throw that many washers in and tighten everything down ( with a dab of locktite )
 
Last edited:

dude1116

Full Access Member
Joined
May 31, 2011
Messages
3,373
Reaction score
13
Location
Pompton Plains, NJ
On mine I can get under it sitting flat on the ground
( and most all that are lifted here)
so then just either raise or lower the front of the pinion on the rear diff to get it level with the output on the transfer case
Many times this can be achieved by just rolling the jeep forward or backward a small amount, ( with the jeep in gear of course )
This allows the Jeep to rock back and forth a small amount , I've just used my knee many times to move it
OF COURSE there are always times when a jack maybe needed to move the front of the rear diff down some
After you get it where it looks right, then measure between the brackets, throw that many washers in and tighten everything down ( with a dab of locktite )

Sounds like a pain in the ****, to be honest, but I'll give it a try. My pinion is pointing up a bit.
 

mx3_ryder

Full Access Member
Joined
Jan 27, 2014
Messages
351
Reaction score
1
Location
troy VT
another picture is worth a 1000 words..............well hopefully for some it is
You must be registered for see images attach

Hey Tom, is picture 2 what I would expect to achieve with the extension adjusted correctly?
 

tommudd

Moderator
Staff member
Moderator
Joined
Jul 14, 2005
Messages
22,456
Reaction score
3,642
Location
Southeastern Ohio
Hey Tom, is picture 2 what I would expect to achieve with the extension adjusted correctly?

Yes, you want the rear output shaft and the rear pinion to be parallel
so the second pic is what you are going for or as close as you can get
You kind of have to eyeball it back at say the rocker panel, drawing a straight line from each to the middle ( you don't want them touching of course in your head) :happy175:
 

Latest posts

Members online

Top