Whats so bad about a 2 inch body lift? - Page 5

**Unlimited04** · 02-23-2009, 02:59 PM

I don't know if this rig had a body lift or not, but it does prove a body can come off the frame. Found this on Pirate4x4 or this forum, can't remember - its from a rather steep trail in Colorado. The question then remains, if you're putting more stress on a body mount by some means (BL, no BL, or whatever), then are you ok with this result in a bad accident?

**ErikJordan** · 02-23-2009, 04:14 PM

Quote:

Originally Posted by Unlimited04

I don't know if this rig had a body lift or not, but it does prove a body can come off the frame. Found this on Pirate4x4 or this forum, can't remember - its from a rather steep trail in Colorado. The question then remains, if you're putting more stress on a body mount by some means (BL, no BL, or whatever), then are you ok with this result in a bad accident?

that is an ugly photo.
link original post please.

**Unlimited04** · 02-23-2009, 04:47 PM

Quote:

Originally Posted by ErikJordan

that is an ugly photo.
link original post please.

I searched and I can't find it...thats why I save pictures, because I never find stuff again

it was either here, Pirate or CO4x4.org. there wasn't really a story, it was in a thread with other ugly roll overs. IIRC, it was Webster Pass in Colorado (a few years ago) - the jeep fell & rolled several hundred feet.

Heres another example of a body lift + accident:

Thats from here: http://www.jeepforum.com/forum/f8/body-lift-bad-myth-fact-511796/index2.html

bnine · 02-23-2009, 05:22 PM

Thats a good example. Notice the bolts didnt sheer and they are almost pulled out of the lower mount.

Just goes to show, the tin that they are threaded in, or the mount they are through will fail before the bolts actually sheer. Those failures will occur regardless if the body lift is stock, 1, 2, or 3 inches in height.

**Unlimited04** · 02-23-2009, 06:08 PM

Quote:

Originally Posted by bnine

Thats a good example. Notice the bolts didnt sheer and they are almost pulled out of the lower mount.

Just goes to show, the tin that they are threaded in, or the mount they are through will fail before the bolts actually sheer. Those failures will occur regardless if the body lift is stock, 1, 2, or 3 inches in height.

Thats a 1.25" JKS BL and heres the background story to that: http://www.jeepforum.com/forum/4629686-post72.html

TJ went 60mph in a concrete wall. Enough force to taco the frame and rip the motor mounts out of the engine block. Whats really interesting is the JeepMedic engine skid looks fine!

go 1/4" gusseted steel!

**Curlee** · 02-23-2009, 07:28 PM

Ive got a 3" body lift for reasons im not getting into right now. Its not the most aesthetically pleasing thing in the world, but it works. Im also running an LS2 with 400+ HP and 400+lb/ft with no issues thus far. Im pretty sure most people just read these threads, and then form an opinion from what random people who have no experience think they know. CAN it be dangerous? Yes of course. Is it more dangerous than than a comparable suspension lift? Yes and no. You allowing for more leverage between the body and the frame, but at the same time the actual center of gravity is less than a suspension lift. Anyone who doubts that needs to take a lesson in physics. You are moving less weight higher, which would make the center of gravity lower than a suspension lift of the same height.

I have had no issues at all with my body lift, but DO plan on removing it only because as it stands im running close to 9" of lift all together, which is too high for my liking.

shrubeck · 02-24-2009, 03:12 PM

Quote:

Originally Posted by Unlimited04

I don't know if this rig had a body lift or not, but it does prove a body can come off the frame.

To be fair, that is a CJ...

**Unlimited04** · 02-24-2009, 03:18 PM

Quote:

Originally Posted by shrubeck

To be fair, that is a CJ...

your point?

HipCheck_1 · 02-24-2009, 04:28 PM

Quote:

Originally Posted by Unlimited04

I don't know if this rig had a body lift or not, but it does prove a body can come off the frame. Found this on Pirate4x4 or this forum, can't remember - its from a rather steep trail in Colorado. The question then remains, if you're putting more stress on a body mount by some means (BL, no BL, or whatever), then are you ok with this result in a bad accident?

I wonder if it might be safer to have all the heavy parts that comprise the chassis separate from the fairly light body especially in a roll over.

If you look at that CJ it looks to me like the cabin and seats are still fairly intact and the chassis itself kept rolling even farther.

shrubeck · 02-24-2009, 05:06 PM

Quote:

Originally Posted by Unlimited04

your point?

The bolts probably pulled right through the rusted out body mounts. Just making a joke; don't overthink it.

**Unlimited04** · 02-24-2009, 06:47 PM

Quote:

Originally Posted by HipCheck_1

I wonder if it might be safer to have all the heavy parts that comprise the chassis separate from the fairly light body especially in a roll over.

If you look at that CJ it looks to me like the cabin and seats are still fairly intact and the chassis itself kept rolling even farther.

in this case, having a full cage not mounted to the frame would appear to be a beneficial thing. If the frame seperates from the body, the seperation will disperse quite a bit of energy, but imagine the force required to do this. There is so many variables in a crash like this its really hard to speculate.

As you can see in that picture of the 1.25" JKS body mount in a crash, the longer the bolts and the higher the body lift, the more stress that is going to be seen on the body mounts themselves. While the bolts themselves probably won't break, the bolts will provide a longer moment arm to rip the bolt thru the steel frame mount. Keep in mind when the frame stops in a crash, the body wants to keep moving (Newton's law), and the taller the body off the frame, the longer the moment arm that is acting on the steel mounts. Had that BL in the picture been a 3", it may have ripped the bolt clear thru the frame itself.

**theblackjeep98** · 02-24-2009, 07:45 PM

Quote:

Originally Posted by shrubeck

To be fair, that is a CJ...

haha used to be a CJ

**RetiredSERE** · 02-24-2009, 07:50 PM

You could always use wheel offsets and cut/mod the fenders.

Dave

HipCheck_1 · 02-25-2009, 02:05 AM

Quote:

Originally Posted by Unlimited04

in this case, having a full cage not mounted to the frame would appear to be a beneficial thing. If the frame seperates from the body, the seperation will disperse quite a bit of energy, but imagine the force required to do this. There is so many variables in a crash like this its really hard to speculate.

As you can see in that picture of the 1.25" JKS body mount in a crash, the longer the bolts and the higher the body lift, the more stress that is going to be seen on the body mounts themselves. While the bolts themselves probably won't break, the bolts will provide a longer moment arm to rip the bolt thru the steel frame mount. Keep in mind when the frame stops in a crash, the body wants to keep moving (Newton's law), and the taller the body off the frame, the longer the moment arm that is acting on the steel mounts. Had that BL in the picture been a 3", it may have ripped the bolt clear thru the frame itself.

So stop speculating

As I have said before if a body lift was exceedingly dangerous DOT would outlaw them.

**Unlimited04** · 02-25-2009, 08:39 AM

Quote:

Originally Posted by HipCheck_1

As I have said before if a body lift was exceedingly dangerous DOT would outlaw them.

you really think DOT is that smart? thats a lot more credit than they deserve - the government isn't that smart, efficient or knowledgable. they only put up a stop light after people die and their families hire lawyers.