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Unread 03-19-2011, 12:45 PM   #1
wordo30
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TJ long arm suspension on YJ?

Has anyone tried to put a long arm suspension from a tj on a yj. the reason that i am saying this is that when you get the long arm suspensions it comes with the mounting plates for the fourlink bars where it mounts to the frame. i was wondering if the frames were about the same widths where the arms would mount. because would it be that hard to just make the mounts for the springs shocks and arms. do you think this is possible or wouldnt be too hard. i was looking at the rough country long arm kit for $1600 and then i was going to buy some spring perches and then make my own brackets for where the four link bars mount. this is just an idea that i got in my head and i am wondering if this could possibly work. but it all depends on how the frame is too. i was also pondering the idea of just making my own fourlink bars with hind joints on the ends. let me know if you can think of anything that might help or any suggestions, im open to anything.

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Unread 03-19-2011, 01:26 PM   #2
WakeDoctor
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Sorry I have no input other than the frames aren't that different dimension wise, I think the tubs are the biggest difference. However, being that you are looking at LA does that mean you feel this suspension set up is better than leaf spring?
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Unread 03-19-2011, 02:26 PM   #3
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there is a write up on here of a guy who did a tj suspesnion on a yj. he lengthened the arms to midlength. did a great job but like any project its not "easy." there are sources for coil suspension parts online such as polyperformance.
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Unread 03-19-2011, 02:32 PM   #4
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If you have the skills to swap a TJ suspension on a YJ why not build your own arms and just buy the link mounts and spring perches to weld on. With all the fab work involved I would find a different set of axles, or at least and 8.8, 9, or 44 for the rear and ditch the turdy five.
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Unread 03-19-2011, 07:04 PM   #5
wordo30
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yeah. that probably would be a better idea to make my own because it would probably take a lot of making my own mounts and welding. ill just have to keep doing some more things and figure something out and i do have an 8.8 that im going to be putting in the jeep sometime this summer so maybe i can see about figuring something out for getting that in and a new suspension.
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Unread 03-19-2011, 07:49 PM   #6
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explorer pro comp makes a kit to convert from leaf to coilover suspension. runs about 1800 bucks but has all the mounts and perches.
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Unread 03-19-2011, 08:39 PM   #7
burnout189
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Quote:
Originally Posted by jeepinmichguy_ View Post
If you have the skills to swap a TJ suspension on a YJ why not build your own arms and just buy the link mounts and spring perches to weld on. With all the fab work involved I would find a different set of axles, or at least and 8.8, 9, or 44 for the rear and ditch the turdy five.
agreed.
sure it would be possible, about anything is possible, the thing is, you would likely be cheaper and have a better setup if you built your own triangulated four link, all the hard stuff needs done either way, so whats a few more hours for some links and some extra measuring

keep in mind that the TJ setup requires a track bar. a triangulated 4 link does not, plus you will have better articulation, nicer ride, and much more adjustability (during the building process)

heck you could even go with some coil overs if you really want it schweet

or keep it simple and just build a tj style 4 link with panhard and coils, probably might maybe still be cheaper to do it yourself
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Unread 03-20-2011, 03:27 AM   #8
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yeah as much as i agree from a performance standpoint the mid-arm 4 link and coil-overs would be ideal, just whipping that up is not reality. its hard and there are a lot of factors that can make or break a link suspension. with simply transferring a tj suspension the calculations are done for you and your results would be predictable.

the procomp kit is not worth it even if free. too many compromises in the design.
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