TruTrac, in front IFS

[MarkamisPrime]

I'm interested in knowing how your project turns out as well. I have a 4.30 e-locked rear end and the matching 4.30 front diff waiting to install into my 2002 4runner. Just educating myself and getting mentally prepared for the install at this point.

I feel like since i'll be swapping the 4.30 gears into my front diff that i might as well put some kind of traction aid device in or i'll regret it later. Mine isn't a daily driver nor is it a rock crawler but it will see the occasional logging trail and will probably be my designated winter vehicle.

Do not do a lunchbox locker in the front if you want to keep your awd or 4hi drivability on the streets (heavy rain/snow) it’s manageable but I wouldn’t recommend it.

 

[RunningToys]

I'm interested in knowing how your project turns out as well. I have a 4.30 e-locked rear end and the matching 4.30 front diff waiting to install into my 2002 4runner. Just educating myself and getting mentally prepared for the install at this point.

I feel like since i'll be swapping the 4.30 gears into my front diff that i might as well put some kind of traction aid device in or i'll regret it later. Mine isn't a daily driver nor is it a rock crawler but it will see the occasional logging trail and will probably be my designated winter vehicle.

I am wrapping up My TrueTrac install. The pic attached is my current drive side pattern. Looking for some thoughts. I may try and move it to the center a little more. Carrier Bearing Preload is about 5 to 7 inch-pounds. Pinion + Carrier Bearing Preload is around 12.5 to 14 inch pounds

Thought I would post before I close it up for good. I have taken a lot of pics of the process so I can create a write up on a rookies approach to the install.

 

[Bad Luck]

Pattern looks acceptable. A little more inboard would be ideal, but I think you're good with what is shown in the photos. What's your backlash at?

 

[RunningToys]

Pattern looks acceptable. A little more inboard would be ideal, but I think you're good with what is shown in the photos. What's your backlash at?

I didn't check the backlash yet. It is kind of a pain to set up the gauge so I was just trying to get the preload and pattern right. Now I wish I had checked it.

But I agree. I will try and get it a little more inbound.

 

[theriddler]

I'm interested in your opinion on how the vehicle drives with the Trutrac up front.

I got my 4.30 locked rearend installed (and functional) along with the 4.30 front pumpkin. I decided to use my front diff as is for now, but I do have the 4.10 diff that I pulled out to tinker with.

I got my lower gears and rear locker so I'm pretty stoked about that for now, I'll save the front Trutrac for stage 2.

 

[RunningToys]

I'm interested in your opinion on how the vehicle drives with the Trutrac up front.

I got my 4.30 locked rearend installed (and functional) along with the 4.30 front pumpkin. I decided to use my front diff as is for now, but I do have the 4.10 diff that I pulled out to tinker with.

I got my lower gears and rear locker so I'm pretty stoked about that for now, I'll save the front Trutrac for stage 2.

How did you get the 4.10 front diff out? Did you use the remove the front mount technique that MarkamisPrime suggested?

 

[theriddler]

I'm not familiar with that method. Timmy has a video on Youtube, I used that for reference. I almost rebuilt everything up front so the front diff was easy to access....little tricky and heavy but doable.

 

[RunningToys]

Pattern looks acceptable. A little more inboard would be ideal, but I think you're good with what is shown in the photos. What's your backlash at?

Current Pattern
I took the make up shim on the bowl side down from 0.02" to 0.016", while still using the factory shim on the lid side.
Backlash = 0.007 inches.
Pinion Preload = 7.5 to 8.75 in-lb.
Pinion + Carrier Bearing Preload = 8.75 to 10 in-lb.

 

[Bad Luck]

Current Pattern
I took the make up shim on the bowl side down from 0.02" to 0.016", while still using the factory shim on the lid side.
Backlash = 0.007 inches.
Pinion Preload = 7.5 to 8.75 in-lb.
Pinion + Carrier Bearing Preload = 8.75 to 10 in-lb.

Looks dang good to me. Nice work!

 

[RunningToys]

Looks dang good to me. Nice work!

Thanks! I am thinking for my final shim purchase I will get a couple about 0.002 inches thicker than what I have now to get a better preload. Try and mash it equally on both sides.