will converting my YJ leaf spring to coil suspension be a better highway ride? - Jeep Wrangler Forum
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Old 07-09-2015, 04:50 PM
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will converting my YJ leaf spring to coil suspension be a better highway ride?

I have a 92' YJ 6 cyl and want to have a smoother highway ride, will a coil suspension give me that and if so, how much of a difference will it make. I like the YJ model way better than anything else so I would rather convert than buy a TJ or something. However, if the difference in the ride won't be very significant then I probably won't bother.
Thanks everyone,
TC

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Old 07-09-2015, 05:16 PM   #2
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I do not have coil springs on mine but I do not see how it couldn't be better, there are guys on here who do have them, hopefully they will chime in. The leafs are what make our yj's ride like logging trucks so seems inevitable to me!

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Old 07-09-2015, 05:24 PM   #3
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Depending on how much lift you have, there are ways to make a YJ very street comfortable. With the price you're going to put in a coil system, you could spend much less on quality springs and shocks that will give you the ride you want.
I'd look at Old Man Emu springs and either their shocks or Bilstein. Another area people always screw up is tire pressure. These jeeps are very light weight so there is no need to run your tires at the cold max printed on the tire. For example, I'm running my 35" tires at 27# on the street not the 35# on the sidewall. At this pressure I get a much softer ride and even wear.
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Old 07-09-2015, 05:29 PM   #4
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I have the coil springs on mine it's a really smooth ride. That being said if i could go back in time I would have gone with an soa lift with stock springs the reason being I've ridden in jeeps like that and it was just as smooth as mine is now and I'm sure they didn't pay as much as I did converting it to coils the kit is around 1800 and install was 1700 and that was with a install rebate from procomp for 4 wheel parts to do it my wife almost passed out that I was paying more for my lift than I did for the jeep itself but I am well pleased with my jeep and the lift
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Old 07-09-2015, 05:30 PM
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I'm at a 2.5 lift currently, least I think so, bought it used, but I'm running 33X12.50's
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Old 07-09-2015, 05:32 PM
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LOL. yeah, wifes don't generally take it well when money is spent on our jeeps
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Old 07-09-2015, 05:42 PM   #7
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Reno, my mud terrains 33/12.5's say 70 pounds on the side haha. Not that I run anywhere even close
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Old 07-09-2015, 06:03 PM   #8
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Reno, my mud terrains 33/12.5's say 70 pounds on the side haha. Not that I run anywhere even close
Yea, my 2500HD has 80# listed as proper inflation, the stupid warning light is always lit because I run them at 35# around town. The only time I'm at 80# is when I have the Toyhauler on the back. If I run the truck empty at 80# I can call heads or tails when I drive over a quarter.
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Old 07-09-2015, 06:19 PM   #9
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Also I have heard you can swap spring perches from front of the axle to behind and from what I heard makes a softer ride but I haven't and know nothing about it. I do know when I got my jeep with 35's they where all at 40+ or so psi and dropping them to 20 makes a huge difference, off and on road, more so off road gravel roads now with washouts I can cruise at 20+ mph and don't even notice them.

BUT if you are going to convert to springs, make sure your axle is the one you want for good, your going to have to redo almost everything on any axle you put on the front end so make sure its a good one before envesting into one you know your going to replace at anytime soon.

One other thing, I have 6+ inch lift with 35's, its a little bouncy on big bumps but really isn't too bad for me, but thats all relative, it don't ride like a caddy but it also doesn't ride like a lifted 70's pickup, might look at what might need replacing and good seats before 2+k in springs conversion.
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Old 07-09-2015, 06:46 PM   #10
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Originally Posted by reno92 View Post
Yea, my 2500HD has 80# listed as proper inflation, the stupid warning light is always lit because I run them at 35# around town. The only time I'm at 80# is when I have the Toyhauler on the back. If I run the truck empty at 80# I can call heads or tails when I drive over a quarter.
lmao

, 27 lbs? I am currently running at about 34. Wasn't sure about dropping them any more for daily driving being it said so much on the side.
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Old 07-09-2015, 06:57 PM   #11
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I run my tires at
28# front
26# rear
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4:10 gears,new steering column,S.S brake lines,
new sound bar,new head unit,new roll bar pads
HANG THE BASTARD ECV (DECOY)58
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Old 07-09-2015, 07:00 PM   #12
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If you want to be sure about your pressure do the chalk test. Rub chalk across the tread from edge to edge, the drive it forward a bit. If the chalk is worn off the middle tread but not the edges, your over inflated. If the chalk is worn off the edges but not the middle, you're under inflated. Adjust the pressure till you have even wear across the tread.
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Old 07-09-2015, 07:10 PM   #13
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Originally Posted by reno92 View Post
If you want to be sure about your pressure do the chalk test. Rub chalk across the tread from edge to edge, the drive it forward a bit. If the chalk is worn off the middle tread but not the edges, your over inflated. If the chalk is worn off the edges but not the middle, you're under inflated. Adjust the pressure till you have even wear across the tread.
that's brilliant, thank you for that info. I am a carpenter by trade not a mechanic lol, I can build a million dollar home but these 4,000 dollar yj's are what I am trying to learn now. Guess you can say my interests are changing!
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Old 07-14-2015, 05:31 PM
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Thanks everyone!
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Old 07-14-2015, 06:42 PM   #15
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I run my 35s at 25psi on road and 8 offroad
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Old 07-15-2015, 10:47 AM   #16
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Quote:
Originally Posted by reno92 View Post
If you want to be sure about your pressure do the chalk test. Rub chalk across the tread from edge to edge, the drive it forward a bit. If the chalk is worn off the middle tread but not the edges, your over inflated. If the chalk is worn off the edges but not the middle, you're under inflated. Adjust the pressure till you have even wear across the tread.
I like that idea, thanks.

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