1990 4runner upper control arm links

1990IFS · 11-02-2009, 12:57 PM

i have a 4" lifted 4runner coil springs in rear. i need to make adjustable upper links. The lift kit gave me relocation brackets to raise the upper links. should i not use the brackets? how long should the tubing be before the end links are in

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tc · 11-02-2009, 07:11 PM

Huh? Raising the axle end of the uppers is going to change the way the suspension works pretty dramatically. Got any pics of these brackets? How much does it raise them?

Why do you think you need to make adjustable links? (ie - what is wrong) Admittedly, the uppers are a weak point in the stock design IMHO.

Here's the link to my reworking of the rear 4 link:
http://www.yotatech.com/f116/tc-s-2n...thread-153382/

What is your fabrication ability? Can you weld well enough to trust your life on it?

1990IFS · 11-02-2009, 09:20 PM

i need to tilt the axle back a little because of driveline vibration

1990IFS · 11-02-2009, 09:22 PM

allpro offroad used to sell what i am looking for but they have discontinued them

4rnr · 11-03-2009, 08:33 AM

your coils/coil-buckets wont be happy, and you may bind your shocks in more ways than one. You may also bind the Panhard. Basically...bad idea.

tc · 11-03-2009, 08:36 PM

My guess is that you actually need to rotate it DOWN (ie - need longer uppers). The flanges at the tcase and pinion ends need to be EXACTLY parallel so that the vibes induced by the ujoint on one end are cancelled by the one on the other end.

The other option is to go to a double cardan driveshaft and point the diff directly towards the tcase output, but as 4rnr said, this will cause problems.

4rnr · 11-04-2009, 08:02 AM

Quote:

Originally Posted by tc

My guess is that you actually need to rotate it DOWN (ie - need longer uppers). The flanges at the tcase and pinion ends need to be EXACTLY parallel so that the vibes induced by the ujoint on one end are cancelled by the one on the other end.

The other option is to go to a double cardan driveshaft and point the diff directly towards the tcase output, but as 4rnr said, this will cause problems.

Shorter uppers will rotate the axle "down".

tc · 11-04-2009, 03:06 PM

Oops - yes, you are correct.

4rnr · 11-04-2009, 08:52 PM

i knew what you meant

11-02-2009, 07:11 PM	#2 (permalink)
tc Contributing Member Join Date: Nov 2005 Location: Longmont, CO Posts: 8,370	Huh? Raising the axle end of the uppers is going to change the way the suspension works pretty dramatically. Got any pics of these brackets? How much does it raise them? Why do you think you need to make adjustable links? (ie - what is wrong) Admittedly, the uppers are a weak point in the stock design IMHO. Here's the link to my reworking of the rear 4 link: http://www.yotatech.com/f116/tc-s-2n...thread-153382/ What is your fabrication ability? Can you weld well enough to trust your life on it? __________________ Check out www.coTTORA.org to hook up with great Toyota 'wheelin' folks! Current - 93 4Runner: 3VZ 33"x10.50" no lift ARB F/R 96 Impala SS: My own personal cop car Previous - 89 2WD Pickup 22R, Fabtech "Ivan Dan" lift, 31x10.50, IASCA World Finals 4th Place Stop with the mods and get on the trail! Pix at www.4wheelingoh.shutterfly.com/action

11-03-2009, 08:33 AM	#5 (permalink)
4rnr Registered User Join Date: Sep 2004 Location: Plainfield, IL Posts: 1,469	your coils/coil-buckets wont be happy, and you may bind your shocks in more ways than one. You may also bind the Panhard. Basically...bad idea. __________________ poop 1988 stock 4runner, v6, 5spd, soft top. 1990 fj62 stock and mint! 1992 4runner, 3.4, auto, SAS'ed, Marlin USA springs (4"/5"), 37" PBR's, 30 spline Longfields, Hydro assist, dual inchworms (5:1, twin stick, 23 spline, chromo output, 10* clock) 5.29's, lockrite's, custom exo, High angle drivelines drive shafts, 108" wheelbase, Warn hs9500i, Mcintosh/Dynaudio a/v system. The build up...http://www.yotatech.com/showthread.php?t=74915

11-03-2009, 08:36 PM	#6 (permalink)
tc Contributing Member Join Date: Nov 2005 Location: Longmont, CO Posts: 8,370	My guess is that you actually need to rotate it DOWN (ie - need longer uppers). The flanges at the tcase and pinion ends need to be EXACTLY parallel so that the vibes induced by the ujoint on one end are cancelled by the one on the other end. The other option is to go to a double cardan driveshaft and point the diff directly towards the tcase output, but as 4rnr said, this will cause problems. __________________ Check out www.coTTORA.org to hook up with great Toyota 'wheelin' folks! Current - 93 4Runner: 3VZ 33"x10.50" no lift ARB F/R 96 Impala SS: My own personal cop car Previous - 89 2WD Pickup 22R, Fabtech "Ivan Dan" lift, 31x10.50, IASCA World Finals 4th Place Stop with the mods and get on the trail! Pix at www.4wheelingoh.shutterfly.com/action

11-04-2009, 03:06 PM	#8 (permalink)
tc Contributing Member Join Date: Nov 2005 Location: Longmont, CO Posts: 8,370	Oops - yes, you are correct. __________________ Check out www.coTTORA.org to hook up with great Toyota 'wheelin' folks! Current - 93 4Runner: 3VZ 33"x10.50" no lift ARB F/R 96 Impala SS: My own personal cop car Previous - 89 2WD Pickup 22R, Fabtech "Ivan Dan" lift, 31x10.50, IASCA World Finals 4th Place Stop with the mods and get on the trail! Pix at www.4wheelingoh.shutterfly.com/action

11-04-2009, 08:52 PM	#9 (permalink)
4rnr Registered User Join Date: Sep 2004 Location: Plainfield, IL Posts: 1,469	i knew what you meant __________________ poop 1988 stock 4runner, v6, 5spd, soft top. 1990 fj62 stock and mint! 1992 4runner, 3.4, auto, SAS'ed, Marlin USA springs (4"/5"), 37" PBR's, 30 spline Longfields, Hydro assist, dual inchworms (5:1, twin stick, 23 spline, chromo output, 10* clock) 5.29's, lockrite's, custom exo, High angle drivelines drive shafts, 108" wheelbase, Warn hs9500i, Mcintosh/Dynaudio a/v system. The build up...http://www.yotatech.com/showthread.php?t=74915

11-02-2009, 09:20 PM	#3 (permalink)
1990IFS Registered User Join Date: Nov 2009 Posts: 5	i need to tilt the axle back a little because of driveline vibration

11-02-2009, 09:22 PM	#4 (permalink)
1990IFS Registered User Join Date: Nov 2009 Posts: 5	allpro offroad used to sell what i am looking for but they have discontinued them

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