EVO Bolt-on Coilovers question

[Mike_JK_Houston_711]

Just installed evo bolt on coilovers on my JKU yesterday. Well not me, but a very reputable shop in Houston. The rear springs, with enough left/right sway, are catching on the inner sleeves and 'pop' making a clunking noise occasionally. Just checking in here to see if that is the 'norm', or if they need to be tuned at all? I have heard coilovers are noisy and I'm totally fine with that...it's more of a peace of mind that the set up is correct. Plenty of coilovers here on the forum, so hoping I can get some feedback. Thanks!

 

[hinrichs]

Can you get some pics of the rears? Sounds like maybe your timing rings are not setup properly.

 

[Ddays]

Really looking forward to hearing your impressions of those vs std coils? Especially the on-road differences. This is the last real big thing I'm contemplating (HA!) but the on-road handling has me hesitating.

 

[Mike_JK_Houston_711]

Can you get some pics of the rears? Sounds like maybe your timing rings are not setup properly.

Yep, I'll post up some pics later today for sure. Thanks!

Really looking forward to hearing your impressions of those vs std coils? Especially the on-road differences. This is the last real big thing I'm contemplating (HA!) but the on-road handling has me hesitating.

Yea for sure. So far, the on-road first impression is that it's a little more harsh than the standard spring set up I had from RK. But definitely not harsh enough to make me regret the decision going coilovers. AND we all know how badass flexing they are :rock:

 

[Mike_JK_Houston_711]

Can you get some pics of the rears? Sounds like maybe your timing rings are not setup properly.

Actually, I do have this one I took last night. Can you tell anything from this angle of the drivers side rear?

 

[hinrichs]

Rings are too low, move them up about an inch or so.

 

[Mike_JK_Houston_711]

Rings are too low, move them up about an inch or so.

Got it. Here are more I just took. Looks like the passenger side ring is moved up a little higher than the driver side.

Driver rear:


Pass rear:

 

[cozdude]

Got it. Here are more I just took. Looks like the passenger side ring is moved up a little higher than the driver side.

Driver rear:
View attachment 221837

Pass rear:
View attachment 221838

They didn't set any preload onto the coilovers. You need at least a .5" of preload on them

 

[cozdude]

Rings are too low, move them up about an inch or so.

Got it. Here are more I just took. Looks like the passenger side ring is moved up a little higher than the driver side.

Driver rear:
View attachment 221837

Pass rear:
View attachment 221838

Set the preload properly THEN adjust your timing rings. They should sit no higher than 3/4" above the slider

 

[Ddays]

Yea for sure. So far, the on-road first impression is that it's a little more harsh than the standard spring set up I had from RK. But definitely not harsh enough to make me regret the decision going coilovers. AND we all know how badass flexing they are :rock:

So how is handling in curves compared to std coils. lean more or less?

Yeah, off-road no comments needed! :thumb:

 

[Mike_JK_Houston_711]

Set the preload properly THEN adjust your timing rings. They should sit no higher than 3/4" above the slider

Okay. So the 0.5" preload is the space determined between the two nut rings? And assuming the preload should be set to the 0.5" on the front AND rear?

 

[hinrichs]

So how is handling in curves compared to std coils. lean more or less?

Yeah, off-road no comments needed! :thumb:

I will let you take my jeep for a spin on the road before we wheel :thumb:

 

[Ddays]

I will let you take my jeep for a spin on the road before we wheel :thumb:

Awesome! Likewise so you can see what the hydro steering is like.

 

[cozdude]

Okay. So the 0.5" preload is the space determined between the two nut rings? And assuming the preload should be set to the 0.5" on the front AND rear?

Yes the preload (aka ride height) is set by the top ring. To set it you need to have the axle at full droop. I have mine set up so that I have a .5" up front and 1" in the rear to help with when I'm loaded up.

 

[Hammmerhead]

They didn't set any preload onto the coilovers. You need at least a .5" of preload on them

This ^^^^^


At full droop, with no preload, you can pull the spring retainers out by hand.

 

[Mike_JK_Houston_711]

Yes the preload (aka ride height) is set by the top ring. To set it you need to have the axle at full droop. I have mine set up so that I have a .5" up front and 1" in the rear to help with when I'm loaded up.

This ^^^^^


At full droop, with no preload, you can pull the spring retainers out by hand.

Okay, so for a heavy 4-door, I should be looking to set mine at 1" of preload on both front and rear and go from there you think?

 

[cozdude]

Okay, so for a heavy 4-door, I should be looking to set mine at 1" of preload on both front and rear and go from there you think?

Yea I would say do 1" up front and 1.5" in the rear to help when loaded up

 

[Buster3479]

Hinrichs, Cozdude, and Ddays, What's the plan for winter? I really want to put the bolt-on kit on about 5 hours south of you guys, but am afraid of it rusting out after the first winter? Is it an unfounded fear? Thanks

 

[hinrichs]

I will go take a pic of my setup and post it so you can see, not a "heavy" 4 door but i am also running the heavier top springs out back.

 

[Mike_JK_Houston_711]

I will go take a pic of my setup and post it so you can see, not a "heavy" 4 door but i am also running the heavier top springs out back.

View attachment 221844
View attachment 221845

Thanks for posting this up. This gives a good visual - my rings are starting way too low in the rear. So, according to your pictures, do you not have any preload since your two rings are flush against eachother?