How to: Deleting ADD system

If i get the complete diff from an FJ and use the complete tube to mount to my Tacoma, is it a direct bolt on? No need to swap any shaft or bearings?
Are guys sourcing all the parts for cost reason? I found a place where I can get a FJ diff for about $250-300.. if they still have it

 

Yeah if you get the full differential you can just bolt it in. You’d have to check the gear ratios and also make sure you get a front diff from a manual fj cruiser. It seems less work to just replace the side shaft.

 

Agree with this 1000%. I would much rather swap the tubes than the diff itself. It's an easy 1 man job.

 

Im understanding his questions as buying a complete fj diff and stealing the parts. Then the swap wouldn't involve any pressing of bearings or seals, just the 4 bolts of the assembled tube. If that is the case, it would have to be a diff from a manual fj regardless if your tacoma is auto or manual?

 

Correct. Automatics only had the part time 4wd option like our tacomas and therefore still have the ADD. The manual trans had AWD and therefore no ADD because it's always on.

 

Yes, im already 4:88's in my diffs so just the tube.. thanks for the input about it being from manual fj. Seems like a pretty painless install if you don't want to do all the pressing and swapping bearing . I already have an FJ case so I'm trying to do everything at once

 

No problem. And as far as swapping bearings go this is a very simple job. If you don’t have a press a shop will do it for a few bucks I’m sure. The swap took me only a few hours tops and that was taking pictures along the way.

 

I know it's a little off topic, but since FJ transfer case is a close or relevant topic to the ADD. You guys know if this VSS would work to relocate it from the rear axle? found this for sale from a 96 Taco 4 cylinder, guess it says 13/ 28 on the plastic gear

 

If you are an autocraptic yes it’ll work. You’ll have to do some rewiring in the glove box area to tie it in to the ECU. As far as if that specific sensor from an older taco will work I’m not sure, I’ll check my bolt pattern tomorrow when I head into the shop, I have my case dropped for a clutch replacement. Are there two wires or three in that connector?

 

Yes, im looking to rewire it, eventually I want to prep the truck to be able to swap my rear axle.. is your vss in the case?

 

Is the current vss off of the wheel sensor in the rear axle? I know current "bolt in" axles re use the backing plates and brakes to ensure that system continue to work. So I am assuming its there....

 

Yes. the manual transmissions for the 2nd gen taco uses 3 pins, ignition switches voltage supply, ground reference to the instrument cluster and one wire for feedback pulse signal to the cluster. 4 pulses for every one revolution of the speed sensor. Looks like the one from the older taco won’t physically bolt up

 

Yes, my current one is in the rear axle, i want to relocate it and re wire it to the case, i just need to find the right one

 

So would this bolt on to the FJ case?

 

The FJ case and the tacoma case use the same for the VSS. My case is from an FJ cruiser. The speed sensor you have looks like a different size from the picture but it's hard to tell. Plus if that sensor you have only has 2 pins it won't work in the 2nd gen tacomas

 

I don't have the sensor yet, I was going to buy it from some guy! But now you're giving me some hope I need to look for a VSS out of a manual trans. Do you know how to get whatever tooth count for the application?

 

Yes get one out of a manual trans taco or FJ. I believe OEM tooth count is 33. The toyota OEM P/N is 83181-24070. Obviously the more teeth you have the slower it will spin and vice versa, so if you've got bigger tires you'd want less teeth. Also depends if you're regeared. My speedo with 36" tires and 4.56 gears is pretty much dead on. You can also correct the indication using a dakota digital or the like. I think @MY50cal swapped the teeth in his when he did the FJ case swap he may be able to provide some more insight.

 

I have a brand new in box sensor from Ac delco that just needs the wheel for the worm gear I would sell for $50. I thought my sensor was bad but it turned out to be the harness.

 

Thanks for the info, you saved me about $40 maybe more. I was going to buy a few different ones and see what works!
Edit: I have 4:88 and on 37's so I may need a 30 tooth from what you are saying

 

I need it complete with the gear and a little shaft the gears on! I'll probably try to find one at a wrecking yard and see if I luck out get the right tooth count. If not I guess you could buy the gears from the dealer for about 40 or $50