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OK, looks like everyone but me know the answer to this one. Searched, didn't find an answer.

I HEAR folks tell me they like the jeep TJ (97 and up) instead of the YJ because the TJ has a coil suspension and the YJ has a leaf suspension. So I start thinking, searching, and then the questions pop up.

1) Is there a kit to change a YJ leaf type into a TJ type coil suspension? So a YJ + kit = ride like a TJ?

2) OK, the hard one, what are the advantages coil to leaf? Not looking to start a fight, just give me your thoughts.

Thanks.
 

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You are right, TJs are coils, YJs are leafs (leaves?).

I know I have seen YJ coil conversions advertised (aftermarket), or I guess you could find a TJ, buy the axles and suspension, and put it all on your YJ.

Coils supposedly flex and ride better than a leaf setup. Only thing is they are MUCH more complex...you have to design a link system to locate the axle. Watch the Gen 4x4 section for people discussing 3 link and 4 link designs. If you can keep up, you can learn a lot about it...but quite a bit of it is fairly in depth material.

I personally plan to stick with the leaf setup for a while on my Cruiser (already SOA)...its easy to mess with, relatively cheap, and simple.

If you want a better ride out of your leaf setup, go SOA (spring-over axle), and you will get lift and improved ride. This is a little more complex than just a spring lift, but nowhere near as bad as coils.

HTH:flipoff2:
 

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depending on the springs you use they do flex better because they have no friction like the leaves do...the companies that make kits are pro comp and black diamond(but its a coilover kit and is a lot more $$$ but well worth it) superlift was designing a kit at one point several years ago and I dont know if they ever came out with it...personally I wouldn;t mess with the link setup yet...I would learn the basics of your Jeep and then go SOA then later donw the road maybe go with a coil setup....another bennefit to coils is you get better approach and departure angles and you can stretch your wheelbase more easily...
 

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If it was me, I'd stick to leaves. They are a lot easier to work with, and a lot less work to make them flex like crazy. You could always go 1/4 elliptic :D
Scott
 
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