bj spacer install q's
08-20-2007, 09:14 PM
#1
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bj spacer install q's
hey guys...
well I got some bj spacers and bilsteins headed up here, and need to know what else I need for the install, do I need different bump stops or can I just go with the stock ones, any ideas would be awesome, and also what about front brake lines?
well I got some bj spacers and bilsteins headed up here, and need to know what else I need for the install, do I need different bump stops or can I just go with the stock ones, any ideas would be awesome, and also what about front brake lines?
08-20-2007, 10:08 PM
#4
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^^^
nothing to do with torsion bars.. the IFS will still drop to the upper bump stops if the tire is airborne or in a situation where the flex allows it to drop that far.
nothing to do with torsion bars.. the IFS will still drop to the upper bump stops if the tire is airborne or in a situation where the flex allows it to drop that far.
08-20-2007, 10:10 PM
#5
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well, torsion bar crank can aggravate the problem by keeping the IFS closer to the binding angle if they're tightened up. ie.. ride height is near or at the binding angle so the suspension will see itself near or at full flex more often...
but regardless the axles will bind with any 1.5" bj lift if you offroad 'er =)
but regardless the axles will bind with any 1.5" bj lift if you offroad 'er =)
08-20-2007, 10:12 PM
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well, torsion bar crank can aggravate the problem by keeping the IFS closer to the binding angle if they're tightened up. ie.. ride height is near or at the binding angle so the suspension will see itself near or at full flex more often...
but regardless the axles will bind with any 1.5" bj lift if you offroad 'er =)
but regardless the axles will bind with any 1.5" bj lift if you offroad 'er =)
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08-20-2007, 10:44 PM
#8
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?
The spacer lowers the axle by an inch and a half. It doesnt effect the travel of the upper suspension arm, only the lower. The upper suspension arm still falls ontop of the upper bump stop but the result is the axle being at a steeper angle.
Torsion bars only adjust where the suspension rides at not the overall distance the IFS CAN flex to. However you may never see full uptravel if the torsions are set to tight.
but regardless of where you put your torsions the suspension can and will see full down travel!
The spacer lowers the axle by an inch and a half. It doesnt effect the travel of the upper suspension arm, only the lower. The upper suspension arm still falls ontop of the upper bump stop but the result is the axle being at a steeper angle.
Torsion bars only adjust where the suspension rides at not the overall distance the IFS CAN flex to. However you may never see full uptravel if the torsions are set to tight.
but regardless of where you put your torsions the suspension can and will see full down travel!
08-20-2007, 10:49 PM
#9
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and to make note....
When you install BJ spacers your tire camber changes drastically throughout the range of the IFS travel.
Generally you'll see a greater negative camber on the upper side of the travel and a significant gain in positive camber on full down travel. You see this on stock IFS but its much more 'noticeable' with the spacers.
So.....
moral of the story, set your ride height BEFORE getting your alignment done since if you mess with the torsion bars thereafter your camber WILL change.
When you install BJ spacers your tire camber changes drastically throughout the range of the IFS travel.
Generally you'll see a greater negative camber on the upper side of the travel and a significant gain in positive camber on full down travel. You see this on stock IFS but its much more 'noticeable' with the spacers.
So.....
moral of the story, set your ride height BEFORE getting your alignment done since if you mess with the torsion bars thereafter your camber WILL change.
08-21-2007, 12:38 AM
#10
Registered User
I've never heard of one person with this "axle binding issue" after installing bj spacers. I know I don't have it.
The angle of the CV's is definitely worsened, but they don't bind even when rotated by hand.
The angle of the CV's is definitely worsened, but they don't bind even when rotated by hand.
08-21-2007, 10:39 AM
#13
- http://www.4crawler.com/4x4/ForSale/DiffDrop.shtml
Probably just variations in the CV cages that affect the maximum angle they can take.
08-21-2007, 10:42 AM
#14
Contributing Member
You might consider changing the ball joints at the same time. It makes the process a little bit easier.. especially when you are trying to press the stubborn rusty studs out.
08-21-2007, 05:38 PM
#15
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I must say I have not had any issues with this on two trucks I have owned.
Frank
08-21-2007, 08:41 PM
#16
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I've run into a few folks with that issue. Guy and his buddy had a similar year 4Runner and pickup, both stock except for the spacers. One had binding in the CVs at full droop and other was fine. After installing a diff drop kit, the binding was eliminated:
- http://www.4crawler.com/4x4/ForSale/DiffDrop.shtml
Probably just variations in the CV cages that affect the maximum angle they can take.
- http://www.4crawler.com/4x4/ForSale/DiffDrop.shtml
Probably just variations in the CV cages that affect the maximum angle they can take.
I need a pair btw
on my previous chassis the NEW aftermarket CV binded on the bent frame side but that axle angle WAS greater... anyway, the stock one didnt bind at normal drop (like you'd encounter on your rig)
on this new chassis (so now im like the rest of you with straight trucks)
The OEM axle doesnt bind but the new refurbed assuming aftermarket CV does a lil.
its not like it makes the tire hard to spin but you cant miss the uneveness in the spin of the tire and the axles spin, you can definetly feel the axle where it limits out.
Anyway, every truck is different especially on toyota IFS..since they all seem to be a lil different
theres only two solutions, modified upper bump stops (limit down travel) or the better choice, a dif drop.
08-21-2007, 08:56 PM
#17
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sounds like when i do my bj spacers i'll be ordering the diff drop and sway bar drop as well. guess if im gonna do it i'd better go ahead and do it right ehh? tim.
08-22-2007, 07:06 AM
#19
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yea but you're not selling them till the 28th! =P
I need a pair btw
on my previous chassis the NEW aftermarket CV binded on the bent frame side but that axle angle WAS greater... anyway, the stock one didnt bind at normal drop (like you'd encounter on your rig)
on this new chassis (so now im like the rest of you with straight trucks)
The OEM axle doesnt bind but the new refurbed assuming aftermarket CV does a lil.
its not like it makes the tire hard to spin but you cant miss the uneveness in the spin of the tire and the axles spin, you can definetly feel the axle where it limits out.
Anyway, every truck is different especially on toyota IFS..since they all seem to be a lil different
theres only two solutions, modified upper bump stops (limit down travel) or the better choice, a dif drop.
I need a pair btw
on my previous chassis the NEW aftermarket CV binded on the bent frame side but that axle angle WAS greater... anyway, the stock one didnt bind at normal drop (like you'd encounter on your rig)
on this new chassis (so now im like the rest of you with straight trucks)
The OEM axle doesnt bind but the new refurbed assuming aftermarket CV does a lil.
its not like it makes the tire hard to spin but you cant miss the uneveness in the spin of the tire and the axles spin, you can definetly feel the axle where it limits out.
Anyway, every truck is different especially on toyota IFS..since they all seem to be a lil different
theres only two solutions, modified upper bump stops (limit down travel) or the better choice, a dif drop.
Frank
08-22-2007, 07:51 PM
#20
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thanks guys!
well thanks for all the info, I have aisins already. hopefully I dont get binding, if so I will just change the upper bumpstops. hey frank, what sizes of tires rub after the install, cause I dont have my bigger tires yet so will the stock size tires rub with stock backspacing? thanks
