JK Coils springs on 4cylinder TJ = 0 lift - Jeep Wrangler Forum
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Old 06-18-2015, 10:01 AM
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Join Date: Mar 2013
Posts: 292
JK Coils springs on 4cylinder TJ = 0 lift

Well, I decided to try out the swap and it gave me 0 lift. I tried the 17's and 18's. The 18's might have given me a 1/4 inch lift but nothing of any notice. I also tried both sets of JK shocks, the black ones and the red rubicon. The red JK/rubicon shocks were smoother and the best ride out of all combos tried came from the Rubicon jk shocks with the factory TJ coils.

I'm not sure how any of you guys claim to have gotten a 3 inch lift but I find that not possible. I have not replaced or tried the rear spring yet and I am curious as to what the actual lift will be with that. Not the 3" inches that some claim. Did you guys take measurements before and after of the compressed coils?

My jeep is a 98 TJ 2.5 with no back seat, does have A.C but does not have a top. I took all measurements before the swap and after. The measurements before were not really necessary as I believe the factory springs come loaded at 12 and 10 inches long when compressed. The 17's were barely 12 when under load and this is on a 4 cylinder......

The Shock upgrade is worth the upgrade and very easy. I used a ball joint press to knock out the bar pin and it took all of a few minutes to get both bar pins out. getting the bar pins in is very simple, just grind the sharp corners off and take one whack with a hammer and done. Ball joint press and socket was used to knock out the roller pin in the JK shocks very easy swap and worth the upgrade.

I will post photos of measurements and jeep later on today but want to let you guys know that the springs will not give you a lift. There's a few members on this forum that claim to have gotten 3" and that is not possible. I did this experiment out of curiosity and want to thank the members on the forum that helped me out with parts. I will be donating my extra shocks and springs when the time comes. If anyone in fort worth wants some shocks and springs, they are yours but I will not ship them.
It took me 30-38 minutes to do each side and that was not rushing and using an impact wrench. Would take much longer without the impact wrench. While this is not a horrible job, those that are not good at wrenching should not waste their time with the JK swap... Actually, no one should mess with the sorry swap, its a waste of time and no lift.

Does anyone have photos or actual measurements of the rear coils under load while on the vehicle? I am considering trying the rear springs but would like some numbers prior to... Real numbers, not I think I got about 2.5 inches.... Thanks

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Old 06-18-2015, 10:03 AM
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Join Date: Mar 2013
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thought this was on TJ forum.....sorry, please delete

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Old 06-18-2015, 07:27 PM   #3
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Join Date: Sep 2014
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Originally Posted by PiePuncher View Post
thought this was on TJ forum.....sorry, please delete
That explains it. I was just about to comment on your fabrication skills and start asking for details!
2011 Jeep Wrangler Sahara-JK, 6 spd., 1995 Jeep Wrangler S, 2.5, 4 cyl., 2010 Chrysler 300 Touring/Signature Edition, 2003 2500 SLT, QC, LB, ETH, DEE, 2006 Winnebago Sightseer 29R (F53/V10/5spd TQShift) 2002 Nissan Xterra 4WD/V6
Other: 2010 Kubota MX4700 with FEL, 1977 Kubota L185.
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