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3 Quick TTB Questions


zukirider21

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Hey guys,

Im just about done with my 4wd ttb crossmember swap, and have just a few more questions.

1- are the radius arm crossmembers different between 2wd and 4wd? my 2wd one looks to be in nicer shape and id like to run that if i can.

2- the front bump stops are wasted on the 4wd truck, and my 2wd has one missing. do i really need them? I'm going to be running 2" spacers so I cant really see bottoming out being a problem. plus, if anything i would think id be giving up a bit of flex to them...

3- any tips or tricks to getting the axle beam pivot bushings out? i ordered new ones but haven't tried to put them in yet. but just by looking at them, i dont think it's going to be fun.

thanks in advance guys
 


superds

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2" body. 1.5" coil spring spacers/rear block
I hope I don't come off as a jerk here, I don't mean it that way:

1. Don't you have both crossmembers in front of you? Do you notice any differences? If not, I would say go ahead and use the 2wd one. Otherwise, sand the rust off the 4wd one and paint it.

2. I don't think my bumpstops ever get hit, the tires hit the fenders before that happens.

3. Don't have a suggestion for you off hand.
 

zukirider21

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1- yeah they "look" the same haha but i'm pretty retarded sometimes i was just wondering if anyone knew for sure.

2- that's exactly what i figured.

thanks man
 

superds

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Well, the worst that will happen is that it won't fit back together and you'll be forced to put the 4wd one it to make it all work.
 

zukirider21

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very true haha.
 

mht95ranger

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Just look on LMC web site and see if it is the same part number??
 

t0x1k

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Burn the bushings out with a torch. Then use a screw driver to work between the bushing and sleeve to pull it out, use a bushing insert, not a full press in.
 

85_Ranger4x4

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Just look on LMC web site and see if it is the same part number??
Probably NLA

I have always heard they were different, it would have to be where the pivot brackets mount. It seems looking at them the I beams are longer than the "traction" beams so the mounts would probably be farther apart.
 
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lil_Blue_Ford

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1) Depends on the year and model (you didn't exactly specify what you're working on). On a 1989 Bronco II I can tell you for certain that the crossmember for the radius arms is the same on a 2wd and on a 4x4. I used it for a short while on my Choptop before having some long arms and custom mounts fabbed up.

2) Bump stops are a good idea, and ideally with any lifted suspension they should be adjusted for the new suspension angles and such. However most people do not seem to bother with them.

3) If it ever stops raining around here long enough for me to try putting my axle pivot bushings in, I'll be able to tell you how it goes.
 

zukirider21

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1- the 4x4 truck with the crappier looking crossmember is a 91 ranger extended cab, and im putting it's front end into my 89 2wd extended cab.

2-how would someone go about adjusting bump stops?

3- tell me about it! this entire week looks crappy for my area :/
 

Bennybooster

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2. Just add some metal in the form of 1x1 or somthing in between the bumpstop and the frame. And yes you need them, I have hit mine on occasions, and If I didnt have the bumpstops then it would have been metal on metal
 

lil_Blue_Ford

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Ok, so you're working with a couple Rangers. I'm not certain of the fit, but reasonable assumption says that they should be the same.

As far as adjusting the bump stops, sometimes you can find extended length bump stops, sometimes you have to fabricate blocks and brackets to work as spacers or weld something to the axle. As long as you're not jumping the truck, doing hardcore off-road, or a lot of heavy hauling, bump stops are not really critical - which is why a lot of people don't bother changing them. Basically, a bump stop is to help prevent damage to things by the suspension compressing further than it was designed to. With a 2" lift and using the original stock shocks and the like, stock bump stops are fine. Lifting higher than that or changing out shocks forces you to calculate the point where you have maxed your suspension's up-travel and move your bump stops accordingly.
 

zukirider21

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ah alright that makes sense. ill probably drop em down about an inch to be safe.
 

85_Ranger4x4

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Ok, so you're working with a couple Rangers. I'm not certain of the fit, but reasonable assumption says that they should be the same.
They are not.

Only BII's are a bolt in thing.
 

zukirider21

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They are not.

Only BII's are a bolt in thing.
radius arm crossmembers? I know the engine / axle beam crossmembers are different i've already swapped them.
 

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