wmflyfisher

My question isn't as dumb as it sounds I promise! I'm currently looking for a 4.30 E-Locker diff for the front and back. If this is my only ride, can I go with installing just the back if I don't have enough time to install both. Basically could I run the 4.30 rear with my 4.10 front as long as I don't engage the 4wd?? Wasn't sure because the front axles always turn with the ADD.

drguitarum2005

im curious about this too. i know part of the front diff spins because the front CVs do but I know the front DS doesn't spin so I don't know where the "disconnect" falls

wmflyfisher

Yeah, just not sure if I would have enough down time to replace both before I need to get back on the road. I think it can be done...

914runner

I believe you can do this, as long as you don't shift into 4WD.

I have actually ran a 4.30 rear diff with 4.10 front diff offroad (in dirt, big no-no on pavement). I don't reccomend doing it, but I blew up my rear diff and only had a 4.30 to replace it with. I also have manual hubs on the rig I did this in and they were unlocked on the pavement.

I'm 99.9% sure that the front driveshaft spins independently of the rear when the transfer case is in 2WD.

Disclaimer: This is just my $.02, it's not my fault if I'm wrong and you grenade something.

jason191918

The ADD disconnects the front left axle. When in 2hi, the Tcase is disconnected, and so is the front left axle. If you leave it in 2hi you should be fine. I would recommend removing the front DS, then damage is impossible.

drguitarum2005

X2 on the removing front driveshaft...its so simple.

very interesting about the front left axle...might i ask how you found that out and what purpose that serves? just curious

94Runner4x4

To my understanding you can, but x3 on the front driveshaft.

VSU_4runnin

wow i never thought about it that way...

crolison

yeah you can, like above just take out the dshaft to be safe. I have run for 3 weeks with a 4.88 front diff with no fluid in it with my rear being 4.56

Maj

As long as your t-case is a true, part-time 4WD type, you won't have any problems.

wmflyfisher

It should be right?? Thanks guys.

Ian Rogers

just put 10% smaller tires on the front

jason191918

Here is how I found out.

http://www.ncttora.com/fsm/1993/susp...26addcontr.pdf

I like the 10% smaller tire idea.

jason191918

I just realized I was looking at the 1993 fsm, but the 2001 diff looks the same except it is the front right axle.

Maj

I'm not familiar with Taco t-cases but if you have a mode that the factory sez allows operation of 4WD on hard, dry pavement then it is not a part-time unit.

jason191918

If you put the tcase in neutral does it matter? Or is this not an option w/ the newer ones?

wmflyfisher

Sorry, I'm referring to my new rig. 02 Runner

eric-the-red

If you put the tcase in neutral you won't go anywhere, it's the same as having a gearbox in neutral.

And wmflyfisher I ran my 2001 with the new 4.30 e-locked axle in the rear and my old front diff for 3 weeks with no problems. I didn't remove the driveshaft. I did pull the 4WD fuse though, just in case I accidently hit the button.

misterzee

didn't I hear you say you wanted to install an elocker in both ends?

There's no Totyota Elocker for the front IFS diff....

wmflyfisher

My mistake. You are correct. 4.30 front and back. E for the back.