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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

only looking one front hub for 4wd, will you 3wd or only 2wd still

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Old May 5, 2009 | 05:06 PM
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89whitetoyota's Avatar
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From: Cincinnati, Ohio - Amelia is the exact place. There is no one else on this site from where I am. Seems like everyone is from Cali or Washington. I guess I need to move.
only looking one front hub for 4wd, will you 3wd or only 2wd still

me and and my dude where going up a big hill and he had trouble locking on eof his manual hubs, so he was wondering if you only locked one of the of the front hubs locked with you have 3wd will one front tire engaged and the other not or does it not matter unless both front hubs are locked?
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Old May 5, 2009 | 05:19 PM
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From: Temecula Valley, CA
if the front is open diff, i.e. stock / not locked or not LSD, one wheel will slip regardless of whether the other wheel is locked or not.
and if the hub on that other wheel is or isn't locked it won't make a difference one way or another.

Last edited by abecedarian; May 5, 2009 at 05:21 PM.
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Old May 5, 2009 | 05:22 PM
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From: Temecula Valley, CA
open diff won't make a difference if a wheel slips or not. if the hub is unlocked that's no difference than the wheel slipping. make sense?
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Old May 5, 2009 | 05:25 PM
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No 3wd. All the power will go to the side unlocked.
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Old May 5, 2009 | 05:33 PM
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From: Northern Canada EH
As stated above...because of the nature of a (open) differential the power will go to the wheel that spins the easiest which in your case is the one with the messed up hub.
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Old May 5, 2009 | 06:33 PM
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You will be stuck in 2wd. Pete nailed it on the head.
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Old May 5, 2009 | 06:37 PM
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Wow !
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Old May 5, 2009 | 06:44 PM
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From: Temecula Valley, CA
Originally Posted by PETE_YK
As stated above...because of the nature of a (open) differential the power will go to the wheel that spins the easiest which in your case is the one with the messed up hub.
Originally Posted by Jay351
You will be stuck in 2wd. Pete nailed it on the head.
maybe you should differentiate- 1 wheel up front and 1 wheel in the back = 2wd, right?
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Old May 5, 2009 | 06:53 PM
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89whitetoyota's Avatar
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From: Cincinnati, Ohio - Amelia is the exact place. There is no one else on this site from where I am. Seems like everyone is from Cali or Washington. I guess I need to move.
ok i get it. so you have to have them both locked or you get nothing up front. makes sense. dont hate on me im drunk
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Old May 5, 2009 | 06:58 PM
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From: Temecula Valley, CA
no, having them both locked doesn't mean much.

Say you're crossing a stream at a 45 angle and the front left loses traction and the right rear looses traction: that means you're not moving anywhere since 1/2 your torque goes to the front and 1/2 goes to the rear by default / by design. If the differentials are 'open' (front AND rear) the wheels that can spin will spin and you'll go nowhere. And given that case it won't matter if your front hubs are locked or not.

Make sense?

Last edited by abecedarian; May 5, 2009 at 07:00 PM.
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Old May 5, 2009 | 07:00 PM
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Originally Posted by 86toylet
Wow !
So you were born with the knowledge of how a diff works too, huh? Didn't ever have to learn anything?
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Old May 5, 2009 | 07:03 PM
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From: maple ridge, British Columbia, Canada
Originally Posted by abecedarian
maybe you should differentiate- 1 wheel up front and 1 wheel in the back = 2wd, right?
no, 2wd as in rwd only.

With an unlocked front hub, all the power that is sent to the front end is gonna be sent to the unlocked wheel. Since it obviously spins with least resistance...

Last edited by Jay351; May 5, 2009 at 07:05 PM.
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Old May 5, 2009 | 07:08 PM
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Originally Posted by Jay351
no, 2wd as in rwd only.

With an unlocked front hub, all the power that is sent to the front end is gonna be sent to the unlocked wheel. Since it obviously spins with least resistance...

Yeah, AFAIK if you unlock a front hub on an open differential you will have -0- front wheel action since the unlocked axle will have the least resistance, getting the power but not being able to transfer it to the wheel.
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