Torsion Bars Lifting The Truck Up - Nissan Forum
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post #1 of 19 Old Jan 3rd, 2004, 12:39 AM Thread Starter
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Torsion Bars Lifting The Truck Up

Alright, you've guys have talked me out of a body lift, but ya'll always talk about crankin the torsion bars up to raise the truck up. How exactly would you go about doing this and does it effect the ride, suspension, or any other aspects? Some info would be appreciated!
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post #2 of 19 Old Jan 3rd, 2004, 09:28 AM
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It depends on the current height of your front end. You need to compare the front to the back and look at the limiting stops on the front end.

You can actually measure the distance between certain points and put the front end at stock height this way, regardless of suspension changes..


I assuming your vehicle is stock and the front is sagging quite bad. You can usually gain about 1.5 to 2 inchs above stock height by cranking up tbars. More if sagging.

There are lots of website out there that tell you how to re-index your tbars. This is what you probaly need to do because the bolt that tightens the bars is in too far. No adjustment left.

If you crank up too much you loose down travel and your front wheels come off the ground easily. (I personally love this part) And alignments are harder.

Thats why you change out your UCA (upper control arms) too gain downward travle and correct caster.

Check out www.4x4parts.com for UCAs and more info on there discussion board.

Barry
1993 King Cab SE 4wd- SAS, 35s 3link
1992 Pathfinder SE 4wd - SAS 35s 3link
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post #3 of 19 Old Jan 4th, 2004, 12:04 PM
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Seth, go here:

http://jadcock.oldsgmail.com/nissan/...ars/index.html

It's a page I made up after I adjusted my torsion bars.

Edit: by the way Seth, I think yours are WAY cranked already. I doubt you have much room left to crank them, especially if you've got factory bump stops in there. The way your suspension arms are drooped in the pictures with your new tires, I'd say you're already almost resting on the upper bump stops. Your truck is HIGH off the ground! If you can, please snap a picture of your front suspension so I can see where your suspension arms are in relation to the stops and the frame (like I did on my page above). I'm curious to see where you are sitting at curb height. Thanks!

Jason Adcock
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1995 4x4 XE King Cab - 189,000 miles
1997 Cadillac Seville - 141,000 miles

Last edited by jadcock; Jan 4th, 2004 at 12:16 PM.
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post #4 of 19 Old Jan 4th, 2004, 02:19 PM Thread Starter
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Go here for the pics:

http://home.earthlink.net/~sethk8/torsion.htm

YEAH! Haha, after looking I think I'm deffiently riding high. Looks like im an inch taller than yours, but thats probably thanks to the 31X10.50's. You can see the pics for more details, but I think I'm at the max for height unless I go to body lifts or something, which I don't think I'm going to do! Lemme know what ya think!

By the way: How high to do you think I'm sitting from stock height?

Last edited by sethk8; Jan 4th, 2004 at 02:27 PM.
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post #5 of 19 Old Jan 4th, 2004, 02:34 PM
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adjusting those torsion bars doesn't look to hard... on my 2003 2WD desert runner the front looks to be about 1-2" lower than the rear and I'd like it to be level. Do you think it would create a problem if I cranked them up to get an inch raise? do you have to jack up the front to raise them? nice tutorial though jadcock!!!

later,

Black Knight - 2004 Crew Cab XE-V6 4x4
"...God made men the way they are because we desperately need them to be the way they are. Yes, a man is a dangerous thing, but so is a scalpel. You don't make it safe by making it dull, but instead you put it in the hands of someone who knows what he's doing." - John Eldridge
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post #6 of 19 Old Jan 4th, 2004, 03:12 PM
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Looks great! Those tires are really excellent. You guys may have talked me into putting the 31x10.50s on my 15x6 rims.

Your truck is definitely raised WAY up over stock height...probably two inches. I think mine's about an inch higher than stock, and yours is just about an inch higher than mine. See the distance between your upper bump stop and the upper control arm (on yours)? It almost looks like they're touching. I'd almost recommend you getting some low profile upper bump stops to gain a little more wheel downtravel (you have relatively little right now). See the rusted portion of the threads on your adjusters? I bet the truck ORIGINALLY sat with the upper limit of the rust down at the level of the two nuts on the crossmember. I think it's been adjusted that much since new. Probably a combination of previous owners trying to correct for sagging springs and giving the truck a bit of a lift. I'd say you really couldn't go up any more with the torsion bars -- you may get to where it's hard to align the truck.

But the number one comment -- those suspension arms are TOO CLEAN! Get that sucker dirty!!!

Jason Adcock
Always Tread Lightly!
1995 4x4 XE King Cab - 189,000 miles
1997 Cadillac Seville - 141,000 miles
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post #7 of 19 Old Jan 4th, 2004, 03:16 PM
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Quote:
Originally Posted by black_knight
Do you think it would create a problem if I cranked them up to get an inch raise? do you have to jack up the front to raise them?
Naw, should be easy and safe to "adjust the height" with the torsion bars (read: CRANK 'EM!). I think the 2wd models had different adjusters than the 4wd models did -- at least with the Hardbody style they did. Yes, jack up each side before you do the adjustment -- it takes as much pressure off the torsion bars (and thusly the adjusting bolts) as possible. If you don't jack it up, you're putting the entire weight of the front end on the bolt as you twist it in the adjuster. By jacking it up, you're only twisting against the residual torque in the torsion bars at full suspension droop.

Jason Adcock
Always Tread Lightly!
1995 4x4 XE King Cab - 189,000 miles
1997 Cadillac Seville - 141,000 miles
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post #8 of 19 Old Jan 4th, 2004, 04:44 PM Thread Starter
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Thanks for all the info! You have been a BIG HELP! You gotta admit though! Truck is looking good from my shine up the other day! Haha!
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post #9 of 19 Old Jan 4th, 2004, 06:10 PM
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Quote:
Originally Posted by jadcock
Naw, should be easy and safe to "adjust the height" with the torsion bars (read: CRANK 'EM!). I think the 2wd models had different adjusters than the 4wd models did -- at least with the Hardbody style they did. Yes, jack up each side before you do the adjustment -- it takes as much pressure off the torsion bars (and thusly the adjusting bolts) as possible. If you don't jack it up, you're putting the entire weight of the front end on the bolt as you twist it in the adjuster. By jacking it up, you're only twisting against the residual torque in the torsion bars at full suspension droop.
I looked under my truck and it looks very similar do yours with alot of bolt left above the torsion bars. Yeah the jacking it up makes sense... kind of a stupid question . when I raise the front an inch or so will it affect the ride? (stiffer, softer?) I like how mine rides and don't want to do too much to alter that!

Later,

Black Knight - 2004 Crew Cab XE-V6 4x4
"...God made men the way they are because we desperately need them to be the way they are. Yes, a man is a dangerous thing, but so is a scalpel. You don't make it safe by making it dull, but instead you put it in the hands of someone who knows what he's doing." - John Eldridge
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post #10 of 19 Old Jan 4th, 2004, 07:12 PM
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Mine rode better -- I think it was actually kissing the lower bump stops more than I realized. There should be very little effect on the ride if you're not already bottoming out. Mine were slightly sagged, so mine was apparently touching the stops more than I guessed because after the slight lift, some of the impact harshness is gone on some bumps. It's still a truck, but the ride is just slightly less so now. It's still not Chevy Silverado smooth, but it's as close as I will get I think. I guess it's too much to ask for a compact truck to ride like a full size truck.

Jason Adcock
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1995 4x4 XE King Cab - 189,000 miles
1997 Cadillac Seville - 141,000 miles
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post #11 of 19 Old Jan 4th, 2004, 07:14 PM
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Quote:
Originally Posted by sethk8
Thanks for all the info! You have been a BIG HELP! You gotta admit though! Truck is looking good from my shine up the other day! Haha!
Your paint job is still very shiny! I love the dark metallic colors. I really like white, but the downside is you can't get it in metallic (from Nissan anyway). If I ever repainted my truck, I'd go with Cadillac's "Diamond White Metallic".

Mmmm, nah, maybe not. Maybe too "classy" for a truck that sees as much time in 4-wheel as it does in 2-wheel...

Jason Adcock
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1995 4x4 XE King Cab - 189,000 miles
1997 Cadillac Seville - 141,000 miles
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post #12 of 19 Old Jan 5th, 2004, 10:51 PM Thread Starter
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Hey jadcock, just wondering if you can get those upper bumper stops at a store besides pep boys! I really need them for my truck! Looked on the net, but shipping is to much. Lemme know...
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post #13 of 19 Old Jan 6th, 2004, 07:41 AM
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Quote:
Originally Posted by sethk8
Hey jadcock, just wondering if you can get those upper bumper stops at a store besides pep boys! I really need them for my truck! Looked on the net, but shipping is to much. Lemme know...
I dunno. Pep Boys is the only place I've seen them. Haven't found them at Advance, Autozone, Napa, you name it. Pep Boys is the only place I've seen them. True -- shipping will probably cost you as much as the parts themselves!

Jason Adcock
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1995 4x4 XE King Cab - 189,000 miles
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post #14 of 19 Old Jan 6th, 2004, 01:48 PM Thread Starter
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Well thanks anywas I guess I'll just have to get them off the net. I think while I'm at it I will replace the lower ones too
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post #15 of 19 Old Jan 6th, 2004, 06:32 PM
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Quote:
Originally Posted by sethk8
Well thanks anywas I guess I'll just have to get them off the net. I think while I'm at it I will replace the lower ones too
Are you going to get the poly foam ones over at 4x4parts.com? They're about 30 bucks for the pair and when I get around to doing some front end work (lower ball joints), I'm going to put on a set of these. I'm still bottoming every now and then on some of the deeper bridge joints and off-road gullies. The foam stops will really cushion the blow. I doubt you ever hit your rubber ones though -- you're setting so high.

The '01 Silverado we have at work has this type of bump stop (the compliant foam)...front and rear actually. I bottomed the front end hard on it the other day and it was a very soft transition from down-to-up...unlike the hard rubber stops that are more common, and like we have on our trucks.

Jason Adcock
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1995 4x4 XE King Cab - 189,000 miles
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