Sonoran Steel 1.2 v. OME setup
- Thread starter Clark White
- Start date
cruiseroutfit
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Which front springs? 880, 881 or 882 fronts? I can only assume the 880 or 881 fronts as your experience is very unique. Bumpers? Winch? Any idea which rear springs?
Mr. Leary
Glamping Excursionaire
Coonass and I are trying out the 892s out back. I also have the 882s up front. I am impressed with the 892s so far while loaded down for an expedition. They are a bit stiff when the truck is unloaded, but not to the point of being a problem. The 882s are what you want if you have heavy equipment up front and want an OME setup. They have performed very well for me for quite some time.
SilverBullet
Explorer
Well, it was a while ago when I bought them, and maybe I got the wrong ones shipped, but I bought the heavy duty stuff form here:
http://www.rocky-road.com/4runner.html
So I thought that would give the most. I have a TJM 15 up front, no winch (yet) and stock out back.
cruiseroutfit
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Gotcha. I don't see any part numbers so its hard to say what they consider heavy and medium, etc. There are realistically 4 coils being used on 3rd Gen 4Runner (880-883), each will change the overall height and handling drastically.
cruiseroutfit
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I have not and I don't know that I will ever. While they would obviously net a higher overall lift, possible putting me where I want to be without the use of any spacers, they have a significantly higher spring rate (500 lbs/in versus ~595 lbs/in of the 883). I'm completely content with my spring rate and therefore ride.
I could actually put the 883's into my calculator and figure out what ride height it would result in but I'm really at a 'stopping' point with my current setup. The 883's do have some good reviews with 4Runner users, but remember my note about the coil to frame interference that is an issue on the Tacoma and NOT the 4Runner (ie Tundra coils), this could very well play into the compatability of the 883, 884, etc on 96-02 4Runner.
For reference we calculated the Tundra TRD coils to have a 610/620 lbs/in spring rate so I would expect the 883/884/885 coils to result in a similar ride as I was experiencing there. We have calculated values for ~50 springs, ranging from out of the box OME coils (compared against their published values) and all of the different paint market OE Toyota springs. With each new install I do, I add new spring variables to our database.
There is some mis-information floating around the web about the 883's, I just read a link that Ryan sent me stating that 'The 882s will be the roughest riding with your stock front bumper, then the 883s, then the 881s will be the smoothest', apparently this guy came to this conclusion by comparing the loading recommendations across two different platforms, the 3rd gen 4Runner and the 4th gen 4Runner. Given the geometry of each is different not to mention the weights and associated loads, this logic is very misleading and just plain wrong. Lift height aside spring rate is just that, a spring rate and ride quality is directly proportional. The 883's are in fact 'stiffer' or a higher lb/in spring rate than that of the 882, both calculated and advertised. Along with that I read '
Free height (unloaded height) of a coil has nothing to do with the actual spring rate of a coil, while we all understand that it is important to getting your rig at the desired height, it has nothing to do with comparing coils. The spring rate of a coil is a function of cross section wire diameter, mean coil diameter, and the number of active coils.
This is how we are easily and predictably able to calculate the height of a vehicle long before we actually even pull the tires off. Spring rates are linear (until they are full collapsed) and generally the geometry of the suspension can be considered in a single plane. Using the standing height given known coils (ie stock coils or 881's, etc) we can estimate what will happen if we add a top out spacer, or a coil spacer, or a 883 coil.
Its somewhat counter-intuitive on first thought to think that a lower spring rate coil could result in a taller height or that a 3.5" heavy coil could result in less overall lift than a 2.5" heavy plus coil (such as the 863J/864 combo many Land Cruiser owners are familiar with). However the math stands and once you get comfortable with the relation of the spring rate and the free height of a coil, it all makes sense.
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tacollie
Glamper
Thanks for all that. I should have been more specific in my question and may just call for simplicity. I assumed the 883s would be stiffer due to spring rate. On my 02 Tacoma V6, arb, winch, and wire cable the 882s seemed a hair soft and my SAWS with 650lbs springs were to stiff. I was thinking 883s would be a nice middle ground. I assumed they would yield similar lift to 882s.
cruiseroutfit
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lol I guess I did have a mouthful there.
In your case the 883's could do the trick, however I would still be concerned with the coil to frame clearance issue. I'm running a near identical setup (ARB/winch/dual bats/shower/SC) and thought I would like a bit stiffer from coil hence the switch up to the Tundra coils... long story short I'm back to the 882's and happy.