I need the height of the coil with the weight on them. (Ride Height)

Doing some calculations for new coils and I need to know where I stand with the ones I have now.

Mine sit at about 18". Need to know how far off I am from a Solid axle rig.

Thanks in advance for your time guys.

This may/may not help, but...I have one with BC 5.5 coils and one with Cage 5.5 coils and both measure right at 12" from the top of axle to the bottom of frame.

This may/may not help, but...I have one with BC 5.5 coils and one with Cage 5.5 coils and both measure right at 12" from the top of axle to the bottom of frame.

Nope it don't help me. If you could measure the coil height for me that would be awsome.:D

good numbers here
http://classicbroncos.com/forums/showthread.php?t=56843

I'm still confused:(

From teh sounds of it the 5.5" lift coils give about the same lift as the 3.5"

I got different numbers when i was working out my geometry.

I've had both the 3.5" (Red) and the 5.5" (Blue) the 5.5" are longer by about 1" in free length.
http://www.villanmotorsports.com/BIV/MoreBIV%20203.jpg

But the softer spring rate of the 3.5"amounted to not enough lift even with a 2" spacer.

The 3.5" coils sat at around 16.25 compressed and the 5.5" I currently run are at around 18" I'll get a better measurement tonight.

Does anyone make a longer (Free) softer coil for the EB? Something in teh neighbourhood of around 24" free length and a spring rate of about 290-300?

I was going to go with JBG superflex F150/bronco coils but from the sounds of it they ride at 21"....That's 3" taller than I want. I've already raised my upper bucket 3" from the stock location. I don't want to move it up any more.The tire stuffs good right now. It's droop I can (Know I can) do better with. Just need a longer free lenght coil.

I would check out the deaver superflex coils. They're a single rate coil.

I just received my set of Cage 5.5" coils. They are right at 24" new out of the box.

http://i96.photobucket.com/albums/l166/Bucketobolts/110-1095_IMG.jpg

http://i96.photobucket.com/albums/l166/Bucketobolts/110-1097_IMG.jpg

I just received my set of Cage 5.5" coils. They are right at 24" new out of the box.

:eek:

Would you happen to know the spring rate???

Sorry sure don't.

I E-mailed them to get my answer.

This is with the 3.5" WH coils that tape out to 20 3/4" free.

http://www.villanmotorsports.com/BIV/MoreBIV%20182.jpg

BTW there is no binding at all in that picture. The rotors were sitting on the ground, both sides. I know it will go more. Hence for the 24" long spring.

Right now the 5.5" WH coils are the limiting factor. the 12" travel shocks I have are still fine for more. The front mounted ones I will need 14's for.

Here the coil and shock are almost maxed out.

http://www.villanmotorsports.com/BIV/MoreBIV%20301.jpg

This may be a dumb question, but why not just go with a coil-over? It looks as if you have a lot of work into the rig why not just go the next step? Just my .02.

This may be a dumb question, but why not just go with a coil-over? It looks as if you have a lot of work into the rig why not just go the next step? Just my .02.

What's the fun in that? I may as well just go with a Solid axle.

I've got an explorer 4 door with an SAS and the WH 5.5" coils. With the weight of the truck they measure to 18".

http://www.explorerforum.com/photopost/data/3420/medium/CoilCompress.jpg

I would check out the deaver superflex coils. They're a single rate coil.

I would check these out Joel. (JBG is Deaver)

IIRC, reports are that they've updated these to a 300lb, 24" long coil (from 26", 200lb). Sounds like exactly what you're looking for.

I would check these out Joel. (JBG is Deaver)

IIRC, reports are that they've updated these to a 300lb, 24" long coil (from 26", 200lb). Sounds like exactly what you're looking for.

Shawn, I have thought about it. I think I may be shooting myself in the foot with them.

From the accounts I have read the 26" superflex coils tape out to about 21" on an F150. That's 3" more than I have. I don't want to start cutting them down cuz that would defeat the purpose of a longer coil.

http://www.pirate4x4.com/forum/showthread.php?t=548228

Thanks for the info Froader!

I had E-mailed Cage to get a bit more info on their coils.


Sounds like an interesting project but a common one.

"Mean coil sag with weight on them" provides absolutely no way for us to tell you where they would sit because different weights will compress the coil to a different height. Not knowing the weight, the location of the mounts, etc there is no way to tell you how they will sit in the vehilce.

Free length differences should only come in to play in how much down travel they will allow which of course also relates directly to how soft they are.

Free length is 23.625". Spring rates we do not give out but the initial rates are softer than the rates you listed and the final rate is higher. Our coils are progressive coils not dual rate (which a lot of people call progressive) so there are multiple rates throughout the coil spring.

To help you in your process generally our 5.5" lift coil will sit at 18.25-18.5" at ride height on an Early Bronco with a small block V8 and 16" on a Fullsize 78/79 truck with a big block. Very much generalities. Your Bronco II in stock form but with a 302 V8 is roughly 3900 pounds which is similar to an Early Bronco with a hard top 4200 pounds (some actual weights I've taken on vehicles). My guess is the coil would sit about the same as on an Early Bronco but that is a guess as weight will change its ride height.

I am going to guess that you'll be placing the coil spring on the front end, in roughly the same position as where the stock coil bucket is and that the Bronco II will have a 302 and a winch with an average weight winch bumper up front. This being the guestimate I would say that the coil will probably sit at around 18.625" at static ride height which would leave roughly 8.250" of uptravel before coil bind (which the suspension should be adequately bump stopped to prevent this) and approximately 5" of down travel to free length. The coil will typically stretch an additional 2" past free length and still provide a good life span but if repeatedly stretched way past free length (aproximately 27" as an example) then the life expectancy of the coil goes down in conjunction with the amount stretched and frequency.

So I would have to gather that the coils are 240-400 Progressive.