Need Help-OME Spring Height Measurement

[dragr1]

I'm looking for the height (length) of the front OME861 springs. I don't need the lift height over stock, I need to know what the height (length) of the actual spring comes out to-I'm guessing somewhere between 19" and 20".

Does anyone have this information?

 

[Romer]

Its in the FAQ write-up in the modifications section under OME lifts, that is if I understand your question

 

[dragr1]

Its in the FAQ write-up in the modifications section under OME lifts, that is if I understand your question

I'm not finding anything that gives the length of the spring. All I find is the lift over stock height which is not what I'm looking for b/c I won't be putting them on a LC, but rather on a 4Runner. The factory front LC coils that I have researched vary in length from 18.5" to 20.5". So I'm trying to find out what the overall length of the shoretest OME coils is b/c the factory LC coils are too soft for my application when towing.

 

[TFS55]

OME 861

bar dia 16mm
free height DS 480mm PS 490mm
spring rate 220lbf/in

 

[dragr1]

OME 861

bar dia 16mm
free height DS 480mm PS 490mm
spring rate 220lbf/in

Thanks! That looks like 18.9" and 19.3". That's about the height that I'm looking for-I may just have to try a set.

 

[cary]

Guessing a spring is going to work well because of its free length is like saying a woman is going to be pretty because she is 6' tall. You need to know the spring rate of your current spring and the rate of the proposed spring in addition to the free length to figure out if the new spring will be appropriate in rate as well as how much lift it will create.

 

[dragr1]

Guessing a spring is going to work well because of its free length is like saying a woman is going to be pretty because she is 6' tall. You need to know the spring rate of your current spring and the rate of the proposed spring in addition to the free length to figure out if the new spring will be appropriate in rate as well as how much lift it will create.

Well, I tried the factory 7.5 wrap front 80 coils that were 19" tall and they had the height I was looking for perfect, but when I hooked up to my camper they sagged way too much-probably 3.5" or more. Right now I have the OME 891 coils and 2" of spacer - both for a 4Runner and the OME coils designed for 250# over stock. I would bet that they have the same diameter coil and spring rate as the 861's-just a guess though. So I'm looking at stock LC coils and airbags vs. these OME 861 coils. Only problem with the airbags is that I'm thinking they are too short and will not work with my shocks (factory rear 80 shocks).

The problem I'm having with the 891's and 2" spacer is that with the length shocks I am running-the coils compress flat before the shock has run it's travel-about 2" before bottoming out. The factory LC coils are the perfect height just not the perfect rate.

 

[Romer]

This table is in the FAQ, the column free height is not what you are looking for? If not, I would e-mail ARB. They tend to respond fairly quickly

 

[dragr1]

This table is in the FAQ, the column free height is not what you are looking for? If not, I would e-mail ARB. They tend to respond fairly quickly

Wow, thanks-I somehow missed that.

 

[dragr1]

Hum, OME must build a sag factor of the spring into their lifts heights b/c supposedly the 851's give 2.5" lift and the 861's give only 0.25" lift, yet the
851's are actually shorter overall than the 861's. I see that the 851's do have a larger diamater coil wire, but the spring rate is the same-this is a little confusing to me here?

 

[dragr1]

I called ARB today and here is what I found out. I currently use OME 891 springs with a 2" spacer and these give the height and towing capacity that I need, but compress long before the shocks come close to running their travel. The front 19" tall stock LC 80 springs are the perfect height but too soft for towing.

ARB info:


4Runner rear 891 springs: Spring Rate is 210, bar diamter is 16mm, and free height is 420mm


LC 80 front OME 861 springs: Spring rate is 220, bar diameter is 16mm, and free height is 480mm


So the 861's are 0.367" taller than my current setup of 891's and 2" spacer with only a slightly higher spring rate.

What do you think?

 

[semlin]

the 861s are designed to ride at the same height as brand new OEM springs with an LC on top of them only stiffer which sounds like what you want although who knows how they will react with less weight on them in a 4runner rear compared to an LC front. You thus might gain a little more height than .25" over OEM (especially if your oem springs were used).

the next step up would be 851s. Those are going to give you another 2 inches plus in height which you don't want.

If you are happy with the ride of the OEM shocks in all but towing situation, get airbags. Otherwise, if you can live with the risk of another 1/2" or more in lift buy the 861s.

 

[dragr1]

the 861s are designed to ride at the same height as brand new OEM springs with an LC on top of them only stiffer which sounds like what you want although who knows how they will react with less weight on them in a 4runner rear compared to an LC front. You thus might gain a little more height than .25" over OEM (especially if your oem springs were used).

the next step up would be 851s. Those are going to give you another 2 inches plus in height which you don't want.

If you are happy with the ride of the OEM shocks in all but towing situation, get airbags. Otherwise, if you can live with the risk of another 1/2" or more in lift buy the 861s.

I like the OEM LC 80 shocks that I'm running in the rear-they're great for towing and offroad. I have looked into the airbags and running stock LC 80 springs, but the 4Runner bags would be too short and from what I've seen, the LC bags seem to mount a little different-not positive about that though.

I really don't want 1/2" more lift than I have now-I'm at about 3.5" of lift over stock in the rear now, which is enough for me.



I carry a custom cargo box of 3/4" plywood in the back with drawers and tons of tools, chain, straps, 2 spare cv axles, etc. and a 285 spare, portable extreme air compressor and a custom rear bumper in the back-that's all got to be at least 250 pounds or more over stock on the rear springs. I also tow a 3700 pound popup camper with a tongue weight over 450 pounds.

 

[semlin]

a trailer tongue weight of 450 lbs is going to cause almost any spring to sag.

 

[dragr1]

a trailer tongue weight of 450 lbs is going to cause almost any spring to sag.

Yes, but the sagging is minimal with the 891's and severe with the stock LC coils.

 

[TX_TLC]

Yes, but the sagging is minimal with the 891's and severe with the stock LC coils.

How many miles/years did those stock LC coils have a LC sitting on top of them? Or were they new springs?

I loaded my truck full of moving boxes the other day and couldn't believe the sag in the rear. Justifies all the more the new OME lift .

 

[dragr1]

How many miles/years did those stock LC coils have a LC sitting on top of them? Or were they new springs?

I loaded my truck full of moving boxes the other day and couldn't believe the sag in the rear. Justifies all the more the new OME lift .

No clue how many miles were on them-they were used and I'm sure they were sagged somewhat.