bump stop clearance?
#1
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bump stop clearance?
Hi guys,
I have a 1990 xcab 4x4 3zve with what the previous owner claims is a 5" rough country lift.
looks like blocks in the rear and diff/lca drop up front.
the front bumpstops are pancake ones on a big square dropped down from what i think is the stock location, down about 5".
this makes the LCAs have about 3/8-1/2" before it touches the bumpstops (which dont appear to be a nice soft progressive rubber, just a thin poly piece.)
if I want a little more travel up front, can I just bring the bumpstops up higher?
how much compression can the driveshafts take?
I have not taken off the shocks so I dont know how much travel they have, but can I set the bumpstops so they bottom a bit before the shocks do?
also, what are my options for removing the blocks from between the axle and leafs.
I like the stance it has now, but not a big fan of the axle hop im getting with the blocks.
I have a 1990 xcab 4x4 3zve with what the previous owner claims is a 5" rough country lift.
looks like blocks in the rear and diff/lca drop up front.
the front bumpstops are pancake ones on a big square dropped down from what i think is the stock location, down about 5".
this makes the LCAs have about 3/8-1/2" before it touches the bumpstops (which dont appear to be a nice soft progressive rubber, just a thin poly piece.)
if I want a little more travel up front, can I just bring the bumpstops up higher?
how much compression can the driveshafts take?
I have not taken off the shocks so I dont know how much travel they have, but can I set the bumpstops so they bottom a bit before the shocks do?
also, what are my options for removing the blocks from between the axle and leafs.
I like the stance it has now, but not a big fan of the axle hop im getting with the blocks.
#2
Contributing Member
How about a pic or 2 of your front? Sounds like you still have IFS, so front drive shaft movement should be minimal if that's the case. Are you taking about the compression bump stops that hit the LCA? Or the upper bump stops that limit droop?
On the rear lift I used a new Alcan spring pack, not much axle rotation with these.
After one of my lift kit bump stops broke off wheeling I make some beefer ones:
On the rear lift I used a new Alcan spring pack, not much axle rotation with these.
After one of my lift kit bump stops broke off wheeling I make some beefer ones:
Last edited by mt_goat; 02-27-2011 at 10:43 AM.
#3
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This is what it looks like now.
any other vehicles leafs that work that i might be able to pull from a junkyard?
this truck is just one of my side project/dailys so i dont want to start spending too much on goodies.
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#8
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I think you should be able to shorten it, unless you have the wrong size shocks on there or something. CV angles look good, you could maybe go a little more on the angle (ie crank the torsion bars just a little higher) That would also get you more bump stop clearance, but at the expense of ride softness, unless you install some BJ spacers.
Last edited by mt_goat; 02-28-2011 at 05:41 AM.
#10
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BTW if you are wanting new shocks for that 4" lift I posted part numbers for some 5100 series Bilsteins here: https://www.yotatech.com/forums/f120...please-230469/
As far as used leaf springs. I can't really help except to say some always mention Chevy springs of some kind. Might search "chevy springs"
Last edited by mt_goat; 02-28-2011 at 06:05 AM.
#12
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I'll add my bump stop that broke was during a long steep descent of a rough mountain trail loaded down with gear. During steep descents more of the truck's weight is on the front suspension.
Last edited by mt_goat; 02-28-2011 at 06:09 AM.
#13
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thanks for all the input guys,
the current shocks seem to be in good condition still so i'll keep them till they blow.
I'll try taking off the extensions and see how far it goes before the shocks bottom, then adjust to that.
there's a bumpstop on the rear of the LCA as well, which i thought was strange.
is that a stock feature?
the current shocks seem to be in good condition still so i'll keep them till they blow.
I'll try taking off the extensions and see how far it goes before the shocks bottom, then adjust to that.
there's a bumpstop on the rear of the LCA as well, which i thought was strange.
is that a stock feature?
#14
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yes. One on front one on rear is to equal out the force on both sides of the control arms. Just remember if you don't already know the upper stops is for droop(down travel) and the lower stops are for uptravel.
Last edited by xxxtreme22r; 02-28-2011 at 07:39 AM.
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