Old man EMU rear spring install

Hammer40k

Well-Known Member
First Name
Garrett
Joined
May 23, 2022
Threads
12
Messages
65
Reaction score
47
Location
Portland
Vehicle(s)
2022 Ranger Tremor
Given the cost of the BP-51’s it would be 6-9 months of riding on the 2.0’s probably before I could purchase, even with Awesome Franks stage3 discount
Sponsored

 
OP
OP
Stagg Jr.

Stagg Jr.

Well-Known Member
First Name
Stagg
Joined
Sep 21, 2021
Threads
3
Messages
87
Reaction score
116
Location
NY
Vehicle(s)
2021 Ford Ranger XLT Crew Cab 4X4 302A - 2019 C-HR
Occupation
Retired (sort of)
Given the cost of the BP-51’s it would be 6-9 months of riding on the 2.0’s probably before I could purchase, even with Awesome Franks stage3 discount
Just checked st3. They're still out of stock on the 3.1". Been that way for a while, too. I do see they have just added 3 of the 1.7"'s.

Where are you getting the 3.1's? The 1.7's might just work for you. Cheaper, too.
 

Hammer40k

Well-Known Member
First Name
Garrett
Joined
May 23, 2022
Threads
12
Messages
65
Reaction score
47
Location
Portland
Vehicle(s)
2022 Ranger Tremor
That’s good to know, I think their full Bp-51 kits come with the 1.7”s also so worth considering if they have ‘em
 
OP
OP
Stagg Jr.

Stagg Jr.

Well-Known Member
First Name
Stagg
Joined
Sep 21, 2021
Threads
3
Messages
87
Reaction score
116
Location
NY
Vehicle(s)
2021 Ford Ranger XLT Crew Cab 4X4 302A - 2019 C-HR
Occupation
Retired (sort of)
That’s good to know, I think their full Bp-51 kits come with the 1.7”s also so worth considering if they have ‘em
It does. Nothing in stock though.

$4K going that route. Would be nice though.

Believe I'm under $2K.

Question is, are those shocks $2K + better than the Eibach system? Idk
 


Randy2400h

Well-Known Member
First Name
Randy
Joined
Oct 23, 2018
Threads
21
Messages
290
Reaction score
260
Location
Colorado
Vehicle(s)
2019 Ford Ranger Lariat Sport FX4, 2015 Ford Edge Sport
Vehicle Showcase
1
Hey stag, any ride reports now that the rear leaf springs have broken in and you’ve put some miles on them? I have fox 2.0‘s in the front and rear and will be adding the OME 1.7” leaf pack on my ranger. I decided to go ahead and purchase the Bilstein 5160 rear shocks with the remote reservoirs because they allow up to 2 inches of lift versus the 1.5 allowed by my fox 2.0 shocks. also, they are supposed to be a significant upgrade for towing. I will be using this in conjunction with the Timbren SES rubber helper springs. I’m hoping for a significantly better ride on road, for light off road, and significantly better support for towing.

Edit: Also out of curiosity did you align the axle using an old-school string method or were there any alignment tabs on that bump-stop plate to get you close?
 
Last edited:

Randy2400h

Well-Known Member
First Name
Randy
Joined
Oct 23, 2018
Threads
21
Messages
290
Reaction score
260
Location
Colorado
Vehicle(s)
2019 Ford Ranger Lariat Sport FX4, 2015 Ford Edge Sport
Vehicle Showcase
1
Side note. I came across this short blip on the ARB site. I thought I could rid the truck of the DS installed shim that came from the factory. Don't think so. The pack would need another 3MM as the shim is 6MM. Damn-it! Oh well, can't win them all.



"Certain Old Man Emu coil and leaf springs are labeled “A” or “B”. In most cases, the “A” springs have a higher free height than the “B” spring. This is designed to compensate for existing lean, driver weight, aftermarket accessories, fuel tank, and weight distribution. Pre-installation measurements will allow for a more accurate A/B spring fitment. All leaf springs will be labeled with either a “+”, “0”, or “-“ which signifies a tolerance of up to 3mm. “0” is exact, “+” is slightly above up to 3mm, “-“ is slightly below up to 3mm. Each spring goes through the proper tests to ensure that they meet the tolerances specified by the Old Man Emu Engineers. All leaf springs will have an arrow marked on the top of the spring. The arrow is meant to point towards the fixed end on the frame opposite of the shackle."
Just for further clarification on this. Here’s the same explanation, worded slightly different. I received two “+” leaf springs and I wanted to make sure I didn’t need a “+” for the DS and a ”-“ for the PS.

I reached out to Frank at Stage3, he got this info from ARB:


Here is the response from ARB, essentially those markings are just put on the springs to identify their measurements in quality control and not meant to be sold or paired together any specific way as the tolerance is “tight”

“Hi Frank,
Thanks for reaching out about this!
All Leaf Springs are marked either "0", "+" or "-"

There is a very tight tolerance for our leaf springs. Each leaf spring is 100% vehicle weight tested. After that, we test the height to ensure it is still correct taking the vehicle's weight into account.

The tolerance is up to 3mm (.07 inches).

The + means it will be a little taller, but still within the tolerance.

The - means it will be a little shorter, but still within the tolerance.

The 0 means it tested perfectly.

Any leaf spring that is outside of this tolerance does not go into the market.
This is actually a major advantage of OME Leaf Springs.

If you ever had a + and a -, you would ideally put the + on the side with more weight, even if it's just the steering column.”
 
OP
OP
Stagg Jr.

Stagg Jr.

Well-Known Member
First Name
Stagg
Joined
Sep 21, 2021
Threads
3
Messages
87
Reaction score
116
Location
NY
Vehicle(s)
2021 Ford Ranger XLT Crew Cab 4X4 302A - 2019 C-HR
Occupation
Retired (sort of)
Hey stag, any ride reports now that the rear leaf springs have broken in and you’ve put some miles on them? I have fox 2.0‘s in the front and rear and will be adding the OME 1.7” leaf pack on my ranger. I decided to go ahead and purchase the Bilstein 5160 rear shocks with the remote reservoirs because they allow up to 2 inches of lift versus the 1.5 allowed by my fox 2.0 shocks. also, they are supposed to be a significant upgrade for towing. I will be using this in conjunction with the Timbren SES rubber helper springs. I’m hoping for a significantly better ride on road, for light off road, and significantly better support for towing.

Edit: Also out of curiosity did you align the axle using an old-school string method or were there any alignment tabs on that bump-stop plate to get you close?
Seat of the pants tells me it rides a tick stiffer. I expected this. Don't haul much in the bed these days so I can't comment on that, yet. I really like the springs.

Good to hear you went with the upgraded shocks. If I didn't already buy the Eibachs (happy with) I might have done the same as you. If you can swing the cost, smart move!

No alignment need, IMO. The springs have studs that set into the axle perch. You may want to go back through this thread and see what's in store for you regarding this topic.
 
Last edited:

Randy2400h

Well-Known Member
First Name
Randy
Joined
Oct 23, 2018
Threads
21
Messages
290
Reaction score
260
Location
Colorado
Vehicle(s)
2019 Ford Ranger Lariat Sport FX4, 2015 Ford Edge Sport
Vehicle Showcase
1
Seat of the pants tells me it rides a tick stiffer. I expected this. Don't haul much in the bed these days so I can't comment on that, yet. I really like the springs.

Good to hear you went with the upgraded shocks. If I didn't already buy the Eibachs (happy with) I might have done the same as you. If you can swing the cost, smart move!

No alignment need, IMO. The springs have studs that set into the axle perch. You may want to go back through this thread and see what's in store for you regarding this topic.
IMG_6338.jpeg

Well, all things considered I’m very happy with the springs, they are performing phenomenally. Much softer than OEM around town and it can more suitabley handle a bigger load. This is fantastic for the 7x14 enclosed trailer I’ll be pulling. The Bilsteins are great, no doubt, but I think the majority of my improvement lies in the leaf springs.
The bad part the delivery of the leaf springs. I’m going to talk with Frank again at Stage3 (he seems like a nice guy and has been helpful). The leaf springs came via UPS with a massive amount of shipping labels attached to them, which were beat to shreds and made the process of getting them off over an hour long process. And the epoxy of the springs took a huge hit too. I don’t need the springs to pretty pretty princess pink and look untouched but this is my personal truck, not a farm truck. This was absolutely effin ridiculous; so I had to re-coat the entire set with epoxy.

More impressions to come, as you can see from the pic, I didn’t reuse the factory bump stops. This is because the gap between my Timbren rubber helper springs and the leaf spring pack is exactly what I wanted at unloaded ride height. And the rubber springs should mate up nicely with the leaf springs under a heavy load. I also ran into the same issue with the locator pin and reusing the factory shim. I opted to leave the shim out and the left side sits 3/16” lower than right; which isn’t visible to the naked eye. I have a Diamondback cover and internal toolbox that rides in the back of my truck and adds about 250lbs full-time weight to the bed, and the leaf springs put the rear end about 1.4” higher than the front end (w/ 2” lift from Ford Perf Fox 2.0s). I now have a set of perfectly good low-mile FOX 2.0 rear shocks which kinda irks me but I wasn’t willing to experiment given another member’s experience popping those shocks through their 1.5” lift limit with the same 1.7” lift leaf spring setup. The Bilstein’s should do well both for off-roading and controlling any kind of porpoising from the trailer.
 
Last edited:
OP
OP
Stagg Jr.

Stagg Jr.

Well-Known Member
First Name
Stagg
Joined
Sep 21, 2021
Threads
3
Messages
87
Reaction score
116
Location
NY
Vehicle(s)
2021 Ford Ranger XLT Crew Cab 4X4 302A - 2019 C-HR
Occupation
Retired (sort of)
IMG_6338.jpeg

Well, all things considered I’m very happy with the springs, they are performing phenomenally. Much softer than OEM around town and it can more suitabley handle a bigger load. This is fantastic for the 7x14 enclosed trailer I’ll be pulling. The Bilsteins are great, no doubt, but I think the majority of my improvement lies in the leaf springs.
The bad part the delivery of the leaf springs. I’m going to talk with Frank again at Stage3 (he seems like a nice guy and has been helpful). The leaf springs came via UPS with a massive amount of shipping labels attached to them, which were beat to shreds and made the process of getting them off over an hour long process. And the epoxy of the springs took a huge hit too. I don’t need the springs to pretty pretty princess pink and look untouched but this is my personal truck, not a farm truck. This was absolutely effin ridiculous; so I had to re-coat the entire set with epoxy.

More impressions to come, as you can see from the pic, I didn’t reuse the factory bump stops. This is because the gap between my Timbren rubber helper springs and the leaf spring pack is exactly what I wanted at unloaded ride height. And the rubber springs should mate up nicely with the leaf springs under a heavy load. I also ran into the same issue with the locator pin and reusing the factory shim. I opted to leave the shim out and the left side sits 3/16” lower than right; which isn’t visible to the naked eye. I have a Diamondback cover and internal toolbox that rides in the back of my truck and adds about 250lbs full-time weight to the bed, and the leaf springs put the rear end about 1.4” higher than the front end (w/ 2” lift from Ford Perf Fox 2.0s). I now have a set of perfectly good low-mile FOX 2.0 rear shocks which kinda irks me but I wasn’t willing to experiment given another member’s experience popping those shocks through their 1.5” lift limit with the same 1.7” lift leaf spring setup. The Bilstein’s should do well both for off-roading and controlling any kind of porpoising from the trailer.
:crackup:

Good lord. I some how forgot to mention the stickers. Yeah pretty bad, took me about a hour also. I used goo-gone and WD-40.

Your install looks great!
 

AZRanger

Well-Known Member
First Name
Lane
Joined
Feb 6, 2021
Threads
5
Messages
113
Reaction score
521
Location
Arizona
Vehicle(s)
2021 Ranger XLT FX4
Occupation
I fix Pink jeeps
It does. Nothing in stock though.

$4K going that route. Would be nice though.

Believe I'm under $2K.

Question is, are those shocks $2K + better than the Eibach system? Idk
Completely adjustable, remote reservoir, internal bypass, large diameter shock. That’s what your money gets you. I have them and they are the best shocks I’ve owned thus far. I can maintain 50mph on a rough corrugated rutted road without ever feeling unstable. Rides good too
Sponsored

 
 



Top