How much drop? How much Tire (4x4 only)
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02-08-2009, 08:30 PM
#14
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2001 4x4
decranked torsion bars and rear shackles with blocks removed
285/50/18 Nitto NT404 tires on 18x8 Nissan Titan wheels
28.8ish" tall tire, nearly the same diameter as a 305/45/18 nitto drag radial
The alignment works out perfect with this setup. The front end is a little bouncy with the torsion bars decranked, I don't know if shock would help or not.
decranked torsion bars and rear shackles with blocks removed
285/50/18 Nitto NT404 tires on 18x8 Nissan Titan wheels
28.8ish" tall tire, nearly the same diameter as a 305/45/18 nitto drag radial
The alignment works out perfect with this setup. The front end is a little bouncy with the torsion bars decranked, I don't know if shock would help or not.
02-09-2009, 02:55 PM
#17
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that's why it's bouncy, you need a jounce bumper, without it you will always be bouncy. Check out Belltech Bump stop 4923, with the bolt removed it snaps into the stock jounce bumper pocket and is the right heigt for decranked bars.
02-09-2009, 05:22 PM
#18
Yea, when I trimmed my bump stops too short, the front end road like a boat...bouncy and wishy washy. I now have some factory rubber bumpstops (an SS part number, not the hard Z71 ones), and their trimmed to be just touching the lca's at rest. Cured my bouncy problem.
02-09-2009, 05:22 PM
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yep torsion bars need the bumpstops. those belltech 4923's are the ones i have and mine rides better than stock. Just set them up so the a-arm is just barely touching the bumpstop.
The torsion bars see the same preload whether they are cranked up or de cranked way down, because the vehicle still weighs the same. The torsion bars are still twisting to the same degree that takes to support the weight of the vehicle at any ride height. The only time you can add preload is when they are cranked way up beyond the a-arm being bottomed out, cranking the bolt even though the a-arms are at fully down will add a preload to the torsion bar and will make for a really nasty bouncy ride.
The torsion bars see the same preload whether they are cranked up or de cranked way down, because the vehicle still weighs the same. The torsion bars are still twisting to the same degree that takes to support the weight of the vehicle at any ride height. The only time you can add preload is when they are cranked way up beyond the a-arm being bottomed out, cranking the bolt even though the a-arms are at fully down will add a preload to the torsion bar and will make for a really nasty bouncy ride.