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Dana Spicer had a prototype kit at EJS like 2-3 years ago that just bolted right into a Jeep JK. It seemed to work just fine and was minimally obtrusive as far as mods.

Also, just a note on the Eaton E-Lockers ( and the new Auburn unit ). In the Dana 60-70-80 sizes they now offer a completely new locking mechanism that eliminates the 'ramp' and 'pin' function. The new design is much much stronger. It doesn't potentially lock-unlock-lock when changing...

Personally, I like avoiding high pressure rotary air pressure seals....that rules out the ARB and Yukon Zip locker for me unless I don't have any other choice. While an ARB or similar unit carefully and thoughtfully installed can provide years of faithful service, it can also be a nightmare...

If you are worried about the knot shifting, you can add an rubber or silicone o-ring behind the loop to keep things more secure. You just need to find the right size that provides a bit of tension, but it still easy enough to open the loop.

Overall I really like it. It is nice to just have a good ol' working truck again. The complete lack of most 'modern' things in a 2007 truck still trips me out....no power locks, manual windows, bench seat, etc. I could dump thousands into the truck and spend months custom fabricating stuff for...

Yup, it was an evolution of that idea, works great.

So gathering a little more data... The shock on the truck is sitting at 19" from eye to the stud top mounting surface at ride height. Most replacement shocks are listed as 13.36" compressed and 20.8" which is 7.44" travel. I think you typically have to add about 1/2" to the mounting length...

Any idea what the ID and spring rate is? Looks like on the website they say they are about 22" long unloaded. I am surprised to see them be a dual rate spring. I would rather avoid that at this time.

I generally set maximum spring rate as what provides zero preload at full droop. In my opinion that is as high as you should go on a long travel off-road suspension. I don't think you want the coil repeatedly dropping out ( or going negative with spring retainers ) at high speeds. There is a...

Spring frequency is a great topic in itself for this thread. There is much debate if it should apply to long travel 4wd stuff.....

Yes, Agree.

Yup, I miss the 'tech' aspect of it all....the WHY it works like it does. I know that companies make money on that, but dang it makes it difficult to learn much.

I posted the scale weights from my truck a few pages back. My total front axle weight is 3720lbs right now. I suspect about 750lbs of that is the front axe assembly. Another ~100lbs for each tire/wheel. That gives me roughly 1400lbs sprung weight per corner. The truck may only be running a...

I posted the OEM ford table in post #32. The stock springs rates, mine being over 400lbs/in, seems super excessive for the amount of shock travel and sprung weight to me. I am typically of the opinion that you want the lightest spring rate that will hold up the vehicle to the position you...

I am 5 3/8 bump pad to frame. Comparing our weights, you are also about 720lbs heavier on the front axle. It seems to confirm what i have been thinking, the aftermarket coils just seem like too much lift for me. I did find a 1.5 coil from rough country but it is a rough country coil and they...

There are no off the shelf 05+ springs that seem to do what I want. Generally everything seems to be made for diesels, or marketed as fitting both ( which is just as bad ). You also can't find any real data on what the springs are you would be buying.....spring rate seems to all of a sudden be a...

Yup, I have been looking pretty hard at this one from Carli. It converts the upper shock mount to an eye style and allows packaging a 2" longer, up to 3.0 diameter, shock.

Keeping the front end as light as practical isn't a bad thing.

Nothing heavy enough to make up the difference in weight.

The spring Accutune is offering is the Icon dual rate unit. It is listed as a gas AND diesel spring. All the measurements I can find say it lifts the front over 3" when used in a gas application. I don't want that much lift. I have looked through pretty much all the springs on the market I can...