body lifts - why they fail
#1
body lifts - why they fail
I am sure everyone has seen a vehicle with a bodylift that became separated from the frame either on a trail (roll over) or from an acccident, or at least has heard about it.
I usually do not do body lifts except on my Bronco IIs, so I can fit stuff that I normally would not be able to fit.
So, in looking at this 88 B2 and how to lift it and how to fab some things up I wanted, I was looking at the factory design.
I think I know why body lifts fail in an accident, especially being hit from the side.
I always assumed it was from being on stilts and being torqued over. I do not think this is a reason.
If you go out and look at your Ford (truck, van, etc.) you will find behind the body mount there is a "shield" built into the body mount under the floor pan, that drops 1-2" below the frame's flange that would engage the frame in a side collision.
I think when you lift a vehicle, this ends up with that "shield" clearing the frame in an accident and allows the body to be pushed over much more then it would normally and relys on the body mount and thin washer on the mount to stop the bolt from pulling through the rubber.
What do you think?
I usually do not do body lifts except on my Bronco IIs, so I can fit stuff that I normally would not be able to fit.
So, in looking at this 88 B2 and how to lift it and how to fab some things up I wanted, I was looking at the factory design.
I think I know why body lifts fail in an accident, especially being hit from the side.
I always assumed it was from being on stilts and being torqued over. I do not think this is a reason.
If you go out and look at your Ford (truck, van, etc.) you will find behind the body mount there is a "shield" built into the body mount under the floor pan, that drops 1-2" below the frame's flange that would engage the frame in a side collision.
I think when you lift a vehicle, this ends up with that "shield" clearing the frame in an accident and allows the body to be pushed over much more then it would normally and relys on the body mount and thin washer on the mount to stop the bolt from pulling through the rubber.
What do you think?
#3
Never seen that shield thingy on my 82 bronco, or any truck. Never seen a properly installed body lift fail either.
Also, my body mounts have very thick steele that keeps them in place not a thin washer that alows it to be pulled through the mount.
I agree with grade 5s failing, that when people get cheap and use hockey pucks or 2x4s. Again, it goes along with a improperly installed body lift can cause just as much trouble as an improperly installed suspension lift.
Also, my body mounts have very thick steele that keeps them in place not a thin washer that alows it to be pulled through the mount.
I agree with grade 5s failing, that when people get cheap and use hockey pucks or 2x4s. Again, it goes along with a improperly installed body lift can cause just as much trouble as an improperly installed suspension lift.
Last edited by BroncoRoadKill; 08-17-2007 at 08:21 PM.
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#13
i don't get the body lift hate, and never will. like stated up there a few years back, cheaper hardware in the kits would be the culprit imho. when you space the body away you create a lot of leverage on the bolts holding it on, so why wouldn't you use the highest grade bolts you could get as well as thicker washers. use the bolts in the kit as a measurement reference and hit up the local hardware store or closest fastenal truck. almost every damn lifted truck around here that's not a diesel has a 3'' body lift, and i've never heard of one failing. i did see the front two bolts come out on my buddy's old chevy while we were mudding, but the bolts weren't the cause. it was rusted out holes in the core support mount that let the bolts come through when he hit a big bump.
#14
Now how many of these truck's have you seen or ran with that have been rolled or wrecked? I say either way it's going to **** it up. Dan is right, it does put a lot of leverage on things, and stresses the bolts even more. Upgrading the hardware COULD possibly prevent this. (Not that it's a for sure fact that you will separate the cab anyways.)
I think most people have a problem with body lifts because they look bad to some people. Not because they fail while driving/wheeling. (Because they point being made is saying that they can fail in an impact.)
Yawn.
#15
This is to Dan and Tin. The idea of this thread isn't saying that they will fail prematurely while driving or wheeling- but that they can fail in an accident or roll over.
Now how many of these truck's have you seen or ran with that have been rolled or wrecked? I say either way it's going to **** it up. Dan is right, it does put a lot of leverage on things, and stresses the bolts even more. Upgrading the hardware COULD possibly prevent this. (Not that it's a for sure fact that you will separate the cab anyways.)
I think most people have a problem with body lifts because they look bad to some people. Not because they fail while driving/wheeling. (Because they point being made is saying that they can fail in an impact.)
Yawn.
Now how many of these truck's have you seen or ran with that have been rolled or wrecked? I say either way it's going to **** it up. Dan is right, it does put a lot of leverage on things, and stresses the bolts even more. Upgrading the hardware COULD possibly prevent this. (Not that it's a for sure fact that you will separate the cab anyways.)
I think most people have a problem with body lifts because they look bad to some people. Not because they fail while driving/wheeling. (Because they point being made is saying that they can fail in an impact.)
Yawn.