Crown leaf springs

cmahaff · Oct 11, 2015

I've always thought these looked a little flat after I installed them. I kind of forgot about them. Then some guy at checker said it looked like I needed new leaf springs. Well these are basically brand new. It's hard to get a good perspective with photos, but I'm gonna try. Should they bow more? Does this look right?
Everything is mostly stock. Just got those crown hill leafs to try and mimic the up country look

Tim_MN · Oct 11, 2015

They look saggy, what is measurement from the rim center to fender flare edge ?

831_xj · Oct 11, 2015

He doesn't have flares. So how about top of tube to frame rail ?

cmahaff · Oct 11, 2015

I'll have to wait until after work to measure. Please excuse my ignorance. Top of tube?

TRCM · Oct 11, 2015

cmahaff said:
I'll have to wait until after work to measure. Please excuse my ignorance. Top of tube?

axle tube

Tim_MN · Oct 11, 2015

831_xj said:
He doesn't have flares.

I knew something looked a bit off.

Boostwerks.com · Oct 11, 2015

Bah, they're fine. The factory replacement leafs are typically flat(ish).

cmahaff · Oct 11, 2015

831_xj said:
He doesn't have flares. So how about top of tube to frame rail ?

So at what point do I measure to on the frame rail? At its lowest point? Where it levels off

cmahaff · Oct 11, 2015

Boostwerks.com said:
Bah, they're fine. The factory replacement leafs are typically flat(ish).

Are they? That's basically what I was wondering

cmahaff · Oct 11, 2015

cmahaff said:
So at what point do I measure to on the frame rail? At its lowest point? Where it levels off

Oh wait, y'all talking about a vertical measurement huh

PacificEd · Oct 12, 2015

They make a standard and a heavy duty spring. Which one did you install?

cmahaff · Oct 14, 2015

PacificEd said:
They make a standard and a heavy duty spring. Which one did you install?

I have the HD ones

moparmansfield · Oct 14, 2015

I have the "upcountry" crown leafs on my 99. They are very flat. My worn out stock ones had more arch than these. Not a great buy IMO. I'll probably be swapping these out for some reputable ones soon.

muddypunk · Oct 14, 2015

Build a bastard pack cut up you flat stock eye leaf and use it as a full length aal on your crown leafs.

dktool · Oct 14, 2015

I bought the Crown Upcountry replacements from Amazon, they have a static 7" arc, I added a full length add a leaf from Iron Rock. It is a very good combo and has not settled any.
I don't carry a bunch of dead weight in the back with the exception of a spare tire on a home fab bumper carrier.
I run a longer than stock shackles with a home brew no lift lay down, 33x10.5 tires and red Rubicon shocks.

cmahaff · Oct 15, 2015

dktool said:
I bought the Crown Upcountry replacements from Amazon, they have a static 7" arc, I added a full length add a leaf from Iron Rock. It is a very good combo and has not settled any.
I don't carry a bunch of dead weight in the back with the exception of a spare tire on a home fab bumper carrier.
I run a longer than stock shackles with a home brew no lift lay down, 33x10.5 tires and red Rubicon shocks.

I don't feel like these have settled at all. It seems like they have been fairly flat since day one. I guess I don't notice it being an issue. But don't want it if it's not correct.

All these other ideas sound cool. It's unfortunate im not too techy in this area and don't know exactly what everybody is talking about. Haha

I'm not trying to get much more lift than I already have.

I also have some HD shackle relocators I've been waiting to put on. I wonder what those will do to the crown leafs

Crawler · Oct 15, 2015

muddypunk said:
Build a bastard pack cut up you flat stock eye leaf and use it as a full length aal on your crown leafs.

And while you're at it, grab a set of ZJ V8 front coils to level it out. The result will be much better than "upcountry" IMO. Roughly 1.5" of lift.

muddypunk · Oct 15, 2015

Crawler said:
And while you're at it, grab a set of ZJ V8 front coils to level it out. The result will be much better than "upcountry" IMO. Roughly 1.5" of lift.

V8 coils didn't lift my rig that much maybe 1" I doubled up new spring isolators on top of the old squished ones with V8 coils to get just about 1.5". Then I used Ford E-150 coils(flex like a dump truck great for dd only) for about 3"New I have rc coils and they hold me up at 5 after 5 years no sag.

heshhash · Oct 16, 2015

My crowns were flat from day 1. Even worse now that work has me pulling a 6x10 cargo trailer. I can pick the tongue of the trailer up when it's fully loaded, but my jeeps hitch drops 4-6" when i hook it up...

Crawler · Oct 16, 2015

muddypunk said:
V8 coils didn't lift my rig that much maybe 1" I doubled up new spring isolators on top of the old squished ones with V8 coils to get just about 1.5". Then I used Ford E-150 coils(flex like a dump truck great for dd only) for about 3"New I have rc coils and they hold me up at 5 after 5 years no sag.

Three different part #s for ZJ V8 coils.
5208 8362 will get you 1-1.5" of lift, 5208 8363 will get you 1.5-2".
If the tags are no longer on the springs, have a dealer print you a build sheet off the VIN #.

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