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Old 04-01-2019, 09:33 AM   #1 (permalink)
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OME springs......yer thots?

Guys, I'm looking for feedback on OME yj springs, specifically the differences between the CSO37R vs the CSO36R.

https://www.4wheelparts.ca/Suspensio...t_pn=ARBCS036R

https://www.4wheelparts.ca/Suspensio...t_pn=ARBCS037R

The 36R is the heavy duty version, for the hard top, and the 37R is the standard duty version, for the soft top model.
Well, that doesn't tell me much......and very, very little info is on the ARB site about them.
Both are supposed to be a 2" lift over oem flat yj's.

Is the leaf count one more [ 6 leafs] on the 36R? Is that all?
Is there a difference between leaf thickness? Or arc?

Any idea what the spring rate / difference is for either of them? As in, and 10% difference? 20%? More? If they posted real numbers and specs, that would be more useful.

And then there is the CSO14F, meant fro the front and also 2" lift.
How is it different from the other two?

https://www.4wheelparts.ca/Suspensio...t_pn=ARBCS014F
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Old 04-08-2019, 01:35 PM   #2 (permalink)
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I ran CS036R springs all the way around on a 93 YJ 4 cylinder. Even with it being light weight (no top, doors, rear seat) it rode and flexed very well. Probably better than any SUA YJ I've been around. Net lift was 3-3.5".
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Old 04-08-2019, 04:24 PM   #3 (permalink)
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Thank you Outlaw.
I'll prolly buy the 36R's.
I have since read the the spring rate [ 188 in / lbs ] is the same for both the 37's and 36's. If I need to lighten the rate on the 36's, I'll pull a leaf and fine tune from there.
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Old 04-10-2019, 07:38 PM   #4 (permalink)
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Unless your Jeep is ultra light, I don't see you needing to lighten the rate. Even the CS036R being the heavy duty version, they are very soft. If you were running a full weight rig (6cyl, hard top, doors, full interior) and then threw in a weekends worth of camping gear I would say they would probably be on the verge of too soft.
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Old 04-11-2019, 10:24 AM   #5 (permalink)
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Ok, thanks.

I just spoke to the ARB USA tech rep. He said they have the same spring rate, but the 36R has 20mm more free camber......so, more arc in the spring. That's the only diff between the two.

About the OMESB57 bushings........
These OME springs supposedly take different bushings than original factory YJ springs.
Do you know what the difference is?
I have brand new polyurethane bushings for factory yj springs already. Trying to avoid spending another $90 Canadian on two kits of OMESB57.
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Old 04-11-2019, 12:04 PM   #6 (permalink)
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You can use standard YJ bushings, but the OME springs are narrower and you'll have side to side movement like I did. I included a link to my build, there's a pic in there showing it. I ended up cutting the bushings down and throwing a big fender washer on each side to take up the space. If I did it again I'd probably just buy their bushings.


https://www.pirate4x4.com/forum/jeep...l#post15179127

Last edited by Outlawz4X4; 04-11-2019 at 12:05 PM.
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Old 04-11-2019, 02:54 PM   #7 (permalink)
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Thank you Outlaw.
I didn't realize it is the leafs that are narrower.
I'll just bring on another $100 and be done with it then.
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