Bilstein 6112

Unless you are going to a different spring rate than the 600lb included, a longer spring will not change a single thing. The total amount of spring preload for any given ride height will be the same.

 

Not exactly. If you have two coils and the only difference between them is the height (length) and you exert the same exact load on it, the taller spring will always be taller.

If you have a 14 inch 600lb/in coil and you exert 600 lbs on it then it will compress to 13 inches. If you have a 16 inch coil (same spring rate and same load) then it will compress to 15 inches. Since its a taller spring you can run it on a lower pre-load level to give the same lift and will preserve the ride.

Now these things ride awesome even on the 4th notch so they handle the pre-load well. You can play with pre-load/spring height/and spring rate for ride height and ride quality

 

The total amount of preload will still be the same. Springs arent magic. You stated in your own post that each spring, 14" and 16" will compress 1" with a 600lb load. Its still 600 lbs supported, it is completely irrelevant that one spring is now 13" and the other is 15". The change in spring height is 1" on both.

If you need 1200 lbs to support the vehicle at the ride height you want, the 14" spring will be at 12". The 16" spring will be at 14". They both have 2in of preload.
The math doesnt lie.

"Since its a taller spring you can run it on a lower pre-load level to give the same lift and will preserve the ride." No it wont change a single thing. The force required to maintain the vehicle at a given ride height is the same. The only thing that would change the amount of preload needed would be to go to a different spring rate. Other wise any 600lb spring will need to be compressed 2" in order to get 1200lbs. The free length is irrelevant if the rate is the same and the spring has enough travel to avoid coil bind. Which on the 6112 that 14" spring has plenty of travel available.

This needs to be made a sticky. Ive explained this in countless threads by now.

 

Launch another thread stating this and see where it goes. Would probably be helpful to pull it out instead of being buried in a specific product thread.

 

I had a nice long response written out, but honestly don't want to get into it. Like Doc said post a thread get some nice proven results and see if the mod will make it a sticky in the suspension thread if all of the facts pan out. From my experience same spring rate, longer spring, less pre-load will give the same ride height and a better ride.

 

I'll say this about longer springs. From experience I had 5100's and the Eibach spring for those is about 1 in longer than the stock spring. Its a 620lb spring and I'm not sure what the stock spring rate is for a DC 4x4? Anyway you got about 1.6" lift just by putting that spring on. Without specifics, even though the travel is limited by the shock, the longer spring gave the feeling of more usable / linear travel. I know not apples to apples but I liked it and would buy a 15" 600 lb spring in a heartbeat over a 650lb 14" spring. 16" would be too much IMO. Just sayin

 

Curious if anyone has pics of a 3rd gen with 6112s maxed out in front and rear 5100s with 1.5 AAL?

 

Curious if they 5160 is a good choice with a full OME Dakar rear pack?

 

It will work but they're not ideal if you want to get the most travel/droop out of the Dakars. Check out @Crom's build thread where he explains proper measuring for bumpstops and which shocks would work best with the full Dakar leaf pack.

 

Ya, it seems the B110 do offer 1.1" of extra travel vs the 5160 (which seems negligible). However, I do like that the 5160 offer a reservoir to match the oil capacity of the 6112.

 

IIRC if you research B110's you'll see they are recommended for 4-5" lift? If say you only have 2" lift in the rear the extended bumps will limit the up travel with a bang. Yes you will get major down travel increase or droop. Just something to consider. I'm looking at 5125's or maybe 5160 but I don't have Dakars and I'm not looking to extend my bumps.

 

I'm slightly annoyed with myself and going ahead with the B110s. They work so far and have had no issue on road or towing. But I know they are a hair to long for my application and I'll have an inch of wasted travel. But the Timbren bumps I have should prevent any shock overcompressing
Best bet is a 10 inch stroke shock which I think is the 5125s... the 5160s are a 9 inch so you run the risk of maxing them out.

 

5160 are a hair under 10 at 9.84
B110: 10.94
Icon extended rear: 10.6
Icon regular: "can support up to 3" lift"

 

thought it was something like that. 5160 is slightly under 10 and the 5125 is slightly over

 

Ya

5160 are a hair under 10 at 9.84
B110: 10.94
Icon extended rear: 10.6
Icon regular: "can support up to 3" lift"

 

Based on that and the fact I will most likely be running OME Dakar, it would appear the extended Icons would be a better choice.?

But, if the 5160 are a better fit as far as valving for the 6112, then they theatrically should offer a bit better ride.

But it would seem the b110 work very well if you have a proper bump stop setup, which I plan on using( wheelers super bumps)

 

I agree....it took me a while to come a round but Crom's posts regarding this made me finally go with the b110's. I will have the full Dakar leaf pack plus the

$81 d29xl leaf spring

d29xl aal and Wheeler's Superbumps without spacers. I should be ok and not have issues with bottoming the shock but once everything is in I will flex my suspension to double check it. If I was not running the d29xl I'd most likely have Wheeler's 1/4" and/or 3/8" spacers to make sure I didn't bottom the shocks.

 

I'm looking in to a custom Alcan pack, about the same height as Dakars. With Wheelers bump stops as well. Will I be ok with 5160s?

 

I saw that and you're always wrong because you think that preload alone determines ride height

 

does it ride bad with lots of preload ?