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Old 04-14-2010, 03:21 PM   #1
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v8 ZJ coils on TJ

been thinking about searching some of the yards up here for a set of V8 ZJ coils. What years and things should I look for? I know it depends on mileage etc.. on how much lift they give but on average what should I expect from a decent pair 3" or so? Any year v8 or what's my best bet? Thanks!

I'm thinking ZJ coils up front and my front TJ coils in back, Ive read that works, any suggestions?

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Old 04-14-2010, 04:37 PM   #2
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I don't think it will give much lift in the front maybe 1" or so.. I can go measure mine compressed if you want to give you a better idea. also how do you plan to hold the tj front springs in place in the rear as they are a different size?

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Old 04-14-2010, 08:41 PM   #3
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go look in the tj lift review section. one or two people there did it.
looks like it might be closer to 2-3 inches based on what i read there. apparently you can balance it out with the rear coils from a ex police crown vic.

as far as which zj, i think i read some where that its 93-98 years.
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Old 04-15-2010, 07:06 AM   #4
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It's a 4 cyl. as well so I will probably get even more in the front.
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Old 04-15-2010, 07:16 AM   #5
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Do you have any added weight to the front of your jeep?

Also The ZJ coils lift differs from 4/6 cyl and weight added to the front of your jeep.

With nothing on the front of your 4 banger...3.25'' of lift but...IT WILL RIDE LIKE HELL.
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Old 04-15-2010, 11:27 AM   #6
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I have read many instances where people have done this swap and there isn't really anything that says it road like crap. The springs are the same size just different rates, it will be much stiffer I realize that but I think with a good pair of shocks it will ride just fine.
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Old 04-15-2010, 11:33 AM   #7
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ADK I mean what is the worst that can happen you get the springs for 25 bucks at the junkyard you toss them in in about 25 mins, then you don't like them you take them back out. It is not hard just swapping springs go for it and see.
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Old 04-21-2010, 08:49 AM   #8
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^ yea I'm gonna give it try, I mean why not right?
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Old 04-21-2010, 09:20 AM   #9
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Quote:
Originally Posted by adkjoe View Post
I have read many instances where people have done this swap and there isn't really anything that says it road like crap. The springs are the same size just different rates, it will be much stiffer I realize that but I think with a good pair of shocks it will ride just fine.
I have ZJ lift springs. And I know all to well about spring rates.

Of course the ride will differ and that is the just of what I was stating. I know several ppl who run the ZJ springs. Nothing wrong with it at all. The jeeps that rode like crap were 4cyl TJ's with V8 zj springs with no added weight. Very stiff ride. Also most people who do a ZJ spring swap do it because they are on a little or no budget. Just like alot of us. But most all reviews are bias, If all someone knows is stock or modded with ZJ spring how can they truly give a accurate review of it compared to other lifts?

Junkyard springs are going to be broken in whether you get them from the 6cyl or 8cyl will be determine the spring rate...also there was the factory upcountry ZJ spring with an even stiffer coil rate and net almost 1'' more lift.

I don't know what is on your jeep I was simple letting you know a few facts. To help you out. Not steer you away from doing the swap.

Anything else bud let us know.
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Old 04-21-2010, 09:45 AM   #10
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Thanks distorted I appreciate the advice especially since you know first hand. I think I'm going to give it a try (i have nothing better to do ) worst case scenario I hate it and I'm out $20 and an hour of my time.

What springs are you running in the back distorted?
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Old 04-21-2010, 10:38 AM   #11
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I have a pair of ome springs front for a zj. I think there 1 or 2 in lift so it should make about 3-4 in lift on a tj. I got them to do the same but I think im am going with a whole new ome lift kit thats complete. shoot me a line if you want them for what i paid on ebay for them. they still have tags on them even though they were on for a short time.
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Old 04-21-2010, 11:08 AM   #12
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Old 04-21-2010, 11:43 PM   #13
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Quote:
Originally Posted by adkjoe View Post
Thanks distorted I appreciate the advice especially since you know first hand. I think I'm going to give it a try (i have nothing better to do ) worst case scenario I hate it and I'm out $20 and an hour of my time.

What springs are you running in the back distorted?
Yep you can always take them back out. Shock will help out some and on a small budget I recommend Skyjacker Hydro shocks...can get them in almost any size for $36 each through jegs or summitracing quickly. DO NOT get the Nitro shocks. And with the ZJ springs in your 4 banger...you will need to change the shocks to accomidate the new lift height. Shoot for 3'' lift shocks. Most shock you can get for 2.5 to 5'' of lift and will work fine.

All my info should be in my jeep profile but I run OME LJ lift springs in the rear.
Both my OME ZJ and LJ springs lift springs and not stock coil rates. Both Netting me 3.5 inches of lift from stock. I chose these specific springs for my appication due to there spring rate and factored in weight of my modifications and future/sitting in the garage mods that will be added to my jeep. Such as tub fenders and full corner armour etc. If you'd like the part numbers for the springs let me know.

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Old 07-17-2012, 07:39 PM   #14
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zj springs

actually hop on napa and you will see that free height there is a difference a 2inch difference between the springs and 3 more coils. there is a 4 inch difference in load height as well. so yes they will be stiffer but not that much stiffer. my last tj had cv police interceptor variable rate springs in the rear, 25$ at the junkyard, and v8 zj coils up front with stacked isolators. i had 4.5 inches up front and 3.75 in the rear. keep in mind that was on a 4 cylinder
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Old 07-17-2012, 07:46 PM   #15
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Old 07-17-2012, 08:08 PM   #16
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i just recently got on this forum, it came up on a search. i know its all opinion i just wanted to put the information i had found up. you know for those who just google questions
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Old 07-17-2012, 09:15 PM   #17
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autozone sells durolast zj springs for 73$ that are factory height and progessive rate. after my military discount and cashing in my points it ran me a total of 43$ for a brand new set XD

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