OME 2.5" Lift install Help!! - JeepForum.com
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Unread 05-10-2015, 04:03 PM   #1
purple_jeep
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OME 2.5" Lift install Help!!

Hi Guys,

Trying to install OME springs and Bilstien shocks I got from Kolak, tried to reach him today no luck so maybe someone here can help??

I have installed the front OME springs and Bilstien shocks and am in the middle of installing the rear but I noticed that the rear OME springs are the same length as the original springs while the front springs were a good 2.5”+ longer?

Is this right and they get the lift from a different spring rate?

Also the rear shocks say they are for a ZJ 1.5”-2” lift but we are shooting for a 2.5” lift right or is this ok?

Anyone know what OME and Bilstien part numbers I should have?

Cheers

Chris

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Unread 05-10-2015, 04:09 PM   #2
kg6mov
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Thats normal. The springs are much higher rate, so they won't compress as much under the weight of the vehicle.
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1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
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Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 05-10-2015, 04:11 PM   #3
purple_jeep
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Great! Thats what I wanted to hear, back to the garage with me then

Quick question for you since you have the same setup, do you have to do anything fancy to run 33s? I keep hearing about backspacing but not 100% sure how that works.

Cheers

Chris
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Unread 05-10-2015, 04:17 PM   #4
kg6mov
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I've done quite a bit to be able to run 33's, I wouldn't necessarily recommend it.

I'm trimmed on all fenders, front wheel wells are beat within an inch of their life for clearance, and aftermarket wheels with less backspace of course.
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1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
1998 ZJ Platinum Limited 5.9, Backyard parts fodder
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 05-10-2015, 04:27 PM   #5
purple_jeep
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Ahh fair enough, yeah I want to stay away from trimming etc for now.

Chart in the FAQ seems to say I can run 265/65R16 which is ~31.6" vs my current 235/75/R15 which is ~28.9".

The chart says I should have 4.5" backspacing vs the stock 4.75" does that mean I need 1/4" wheel spacers on the stock rims?

Cheers

Chris
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Unread 05-10-2015, 04:37 PM   #6
kg6mov
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Stock is 5.5", a 1" spacer is about right, but I ran 31's on stock rims until I got these wheels.

I'm at about 3.75" for BS and it's a bit much IMO. If I had ordered these new I would have gone for 4.5".
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1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
1998 ZJ Platinum Limited 5.9, Backyard parts fodder
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 05-11-2015, 02:56 PM   #7
purple_jeep
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Gahh!!

Looks like there is an A and a B spring which I did not notice. Might have them installed the wrong way

After installing the lift I have the following measurements:
Front Driver
• Floor to fender – 33.5”
• Center of wheel to fender – 20.5”
Front Passenger
• Floor to fender – 34.125”
• Center of wheel to fender – 21.25”
Rear Driver
• Floor to fender – 33.5”
• Center of wheel to fender – 20.375”
Rear Passenger
• Floor to fender – 33.75”
• Center of wheel to fender – 20.75”
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Unread 05-11-2015, 03:08 PM   #8
HighLonesome
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I think you need to switch the fronts. But please get a second opinion.
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Unread 05-11-2015, 03:12 PM   #9
kg6mov
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There is a left and a right spring. Don't remember which way is which though.

I'd second swapping the fronts around and seeing where that sits you.
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1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
1998 ZJ Platinum Limited 5.9, Backyard parts fodder
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
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Unread 05-11-2015, 03:30 PM   #10
purple_jeep
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Yeah looks like that would be the right option.

I think I will leave it for a little bit if its not going to hurt anything as I really don't want to do that again in a hurry See if it settles at all after driving for a week.

Next time I have some front end work to do I will switch them.

Cheers

Chris
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Unread 05-11-2015, 03:40 PM   #11
PolkaPower
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Quote:
Originally Posted by purple_jeep View Post
Yeah looks like that would be the right option.

I think I will leave it for a little bit if its not going to hurt anything as I really don't want to do that again in a hurry See if it settles at all after driving for a week.

Next time I have some front end work to do I will switch them.

Cheers

Chris
http://arbusa.wordpress.com/2011/02...fitting-guide/
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Unread 05-11-2015, 04:20 PM   #12
purple_jeep
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Yeah I found that now, god how I wish they would include that or something in the box with the springs!!!!

Cheers

Chris
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Unread 05-11-2015, 11:58 PM   #13
PolkaPower
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Quote:
Originally Posted by purple_jeep View Post
Yeah I found that now, god how I wish they would include that or something in the box with the springs!!!!

Cheers

Chris
Took a minute to figure that out for me as well. Lmao
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Unread 05-12-2015, 08:59 AM   #14
Spike6901
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Man O Man am I glad I stumbled across this post! I was planning on beginning the install of my OME HD springs and 5100's this weekend along with end links, track bar, etc...and had no idea about this.

Thanks to all for posting this up and possibly saving a guy double work, well a 50/50 chance!
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Unread 05-12-2015, 09:20 AM   #15
HighLonesome
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If you set the coils side by side, you'll notice one front and one rear is longer than it's counterpart. Put the long front on the driver side and the long rear on the passenger side.
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