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Old 08-06-2013, 12:02 PM   #1
motobilt
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Default Building 4 link custom suspnsion on a Jeep YJ

I thought I would share a little of what I am working on the shop. I started cutting up a Jeep YJ a few days ago. I will be fabricating many new parts for this build. Some will be designed in Solidworks and some will be hand made. For those interested I will be building custom 4 link suspension front and rear, KING Coilovers on all 4 corners, and fabricating a new frame back half.

I will also be custom building a new aluminum fuel cell and mount for this build.

Stay tuned the pics are coming.

You can also find a post on my website where we will be posting many more pics as this build develops.
http://www.motobilt.com/blog/project...nk-suspension/

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Old 08-06-2013, 03:42 PM   #2
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Sounds cool, I'll keep an eye on it. Thanks for taking the time to post the pics. I'm a fab-o-holic.

Hey Dan, if you dont mind me asking...how old are you?
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Old 08-06-2013, 09:51 PM   #3
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by bullnerd View Post
Sounds cool, I'll keep an eye on it. Thanks for taking the time to post the pics. I'm a fab-o-holic.

Hey Dan, if you dont mind me asking...how old are you?
Just turned 40 a couple weeks ago. Getting old. Haha.

Dan
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Old 08-06-2013, 09:54 PM   #4
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Kickass
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Old 08-06-2013, 10:45 PM   #5
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

I am working on a new Back Half Kit of the Jeep YJ build. I moved the frame rails under the tub about an inch to gain room for the KING Coilovers going in the back. I will post up some more pics as the design develops. This is just a start. I am going to add a few features to the design. I need to finish up the corners where the bumper connects as well. More coming soon.

For those who don't know.... this is going to be the rear section of the frame under the tub. The frame rails will be higher and moved in to make room for some huge 16" KING Coilover shocks I will be mounting.

Custom Build Jeep YJ 4 Link Suspension and back half kit by Motobilt | Motobilt Metal Fabrication Blog

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Old 08-06-2013, 11:01 PM   #6
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Subscribed!!!!!
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Old 08-06-2013, 11:55 PM   #7
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

you're a very talented designer/modeler!
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Old 08-07-2013, 08:15 AM   #8
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by Mandres View Post
you're a very talented designer/modeler!
Thanks for the props

Dan
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Old 08-07-2013, 09:11 AM   #9
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

So how long before a back-half kit for TJ's is available from you? I love the work you do. I've been following most of your stuff over on Pirate and have been impressed with your fab/design skills!
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Old 08-07-2013, 09:26 AM   #10
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

I've got SOA on my CJ....but coil over is by far the best way to go.

How many inches of travel do you think you will get?

What axles do you have on it?

Now your putting the bug in me...I need to finish my house so I can get back on my jeep....I have a D-44 Flat top on my driveway that is about 40% done.
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Old 08-07-2013, 10:16 AM   #11
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by mattamd_xp View Post
So how long before a back-half kit for TJ's is available from you? I love the work you do. I've been following most of your stuff over on Pirate and have been impressed with your fab/design skills!
I do not have an ETA on a TJ version at this time. I have a few projects I need to finish before I work in it. Keep in touch.

Dan
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Old 08-07-2013, 10:20 AM   #12
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by ddawg16 View Post
I've got SOA on my CJ....but coil over is by far the best way to go.

How many inches of travel do you think you will get?

What axles do you have on it?

Now your putting the bug in me...I need to finish my house so I can get back on my jeep....I have a D-44 Flat top on my driveway that is about 40% done.
This Jeep has a full width D60 front and a 14 bolt rear. The KING Coliovers going in are 14" 2.0's in the front and 16" 2.0's in the rear. This Jeep was SOA but the owner wanted something he could beat on if needed.

We are building the lower links in this Jeep with 1-1/4" rod ends. I think they should never EVER break. LOL

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Old 08-08-2013, 07:53 AM   #13
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Looks like you have some real skills. I am interested to see this build pan out. My father has a YJ that he talks about hacking up every now and then.
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Old 08-08-2013, 09:10 AM   #14
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by bad_idea View Post
Looks like you have some real skills. I am interested to see this build pan out. My father has a YJ that he talks about hacking up every now and then.
Thanks. Let me know if you have any questions.

Dan
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Old 08-09-2013, 12:41 AM   #15
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Moto-

Where did you get that tiny Monster can?!?

HAHA, Just playing. Is the YJ for a customer or is this going to be a shop crawler of sorts?
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Old 08-09-2013, 08:51 AM   #16
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by shocwav3 View Post
Moto-

Where did you get that tiny Monster can?!?

HAHA, Just playing. Is the YJ for a customer or is this going to be a shop crawler of sorts?
It belongs to a customer. I have plans to build another for myself soon. Just not enough hours in the day.

Dan
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Old 08-09-2013, 08:52 AM   #17
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Another pic... I have been busy drawing parts for this Jeep. I will post up some fabrication pics very soon.

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Old 08-09-2013, 09:32 AM   #18
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Those are pretty wimpy looking Heim joints....are you sure they will hold up?

When you get a chance....how about a close up of the knuckles....who did the flat top on them? Which arms?

How do you set the caster on the front? Will you do it with the links or weld in place?
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Old 08-09-2013, 09:39 AM   #19
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

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Originally Posted by ddawg16 View Post
Those are pretty wimpy looking Heim joints....are you sure they will hold up?

When you get a chance....how about a close up of the knuckles....who did the flat top on them? Which arms?

How do you set the caster on the front? Will you do it with the links or weld in place?
The knuckles on this Jeep are factory kingpin Dana 60. They are flat from the factory with 4 studs on each. I am not sure who he got the arms from. The previous company I owned and sold we built a LOT of CNC machined high steer arms.

On this Jeep because of how low it will sit and the full hydraulic steering I will soon be adding the tie rod will be moved down to clear the frame. It is not in the budget of this build to front half the frame for more clearance.

Setting caster on a four link is figured into the initial link set up and then can be adjusted with the links. However changing caster on a solid axle setup also changes the pinion angle.

Dan
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Old 08-09-2013, 09:52 AM   #20
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Default Re: Building 4 link custom suspnsion on a Jeep YJ

Pinion angle? Yep....and I doubt you have room to run a CV DS.

I did a SBC conversion on my CJ with the 4L60E tranny (kept my D300)...I'm hoping that when I put the D44 in that my DS will fit.

What is the width of that axle? It looks like it has NOT been cut down. I'm on the fence as to if I should chop off 4" on mine or go full width...but then my rear would look funny....(AMC20)

If you want to see pics....click on the link in my signature.
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