Affordable regear to 4.30

[HomersCanyonero]

Looking closer between 8.0 elocker and 8.2 elocker shows minimal difference.
1. 12 bolt ring gear on 8.2 VS 10 bolt ring gear on 8.0 ring gear.
2. M10 stud on 8.2 vs M8 stud on 8.0 housing
3. 29 spline post 2002 vs 27 spline pinion on pre 2002 8.0

The upgrade to 8.2 elocker does not seem to gain substantial strength over 8.0 elocker.
If you plan to upgrade, non locking 8.2 would give much more substantial strength. BN21 elocker from 4th gen Tacoma or LC 250 might be a cheaper option then harrop. Haven't looked into compatibility yet.

View attachment 3877139
View attachment 3877140

Since I got a factory elocked 8.2” rear differential from a 2016 4Runner and also re-geared to Revolution 4.56 gears, I’m trying to make sense of this claim that the 8.0” and the 8.2” elocked are both weak.

It would be good to compare a non-locked 8.2” rear differential side by side to the pictures you have to see if the difference is visible.

From my understanding, it’s the 3rd member that’s stronger in the 8.2” compared to the 8.0.

But then again, I’ve never opened a pumpkin to see and feel the differences across elocked 8.2” and non-elocked 8.2, so I can’t really tell the difference from photos of the outside…need to peel the onion and see the components thickness

Too bad we can’t ask the owner of ECGS to chime in with his experience rebuilding diffs.

 

[Jstawgn]

It would be good to compare a non-locked 8.2” rear differential side by side to the pictures you have to see if the difference is visible.

Not saying 8.2 elocker upgrade is not worth it. What I am saying is elocker 8.0 are not that much weaker and stil a worthy upgrade for a lot less money.

The 8.0 open are definitely weak for 5000+ lbs truck, especially after losing bearing preload.

The tower that suport the carrier bearing is the biggest difference. You can see they are much thicker on the 8.2 diff

 

[HomersCanyonero]

I’m no expert on this topic, but Im having a hard time grasping what you are saying.

Are you specifically talking about an 8.0 with 4.3 gears from a Tacoma? Or are you including all Toyota/Lexus 8.0s regardless of gears or model car?

And is it the Toyota Tacoma model diff or the gears that make the 8.0 4.3 just as strong?

All I know is that the 8.0 3.73 can fail even with new 4.56 or 4.88 gears and even with new rear locker. This has been proven.

So, that’s why your claim that the 8.0 in general is just as strong as the 8.2 elocked one is hard to swallow.

But if the Tacoma 8.0 4.3 in particular has something to offer, then I can see that point of view…but I don’t see it if you include the GX470 8.0 which seems weaker than the Tacoma 8.0 4.3 diff from what you are saying

 

[Jstawgn]

You missed the point. It's not dishing 8.2 elocker. You already have it. Enjoy it.
What I am saying 8.0 elocker is stronger than 8.0 open due to carrier design to allow the locking mechanism also helps stiffen the carrier.

Open 8.0 are known to be weak due to weak tower that felex under torque. Especially after losing preload. No question about it.

What I am saying is elocker 8.0 is only slightly less strong than elocker 8.2 due to very similar designs. Main differences is pinion spline 27/29 spline vs 30 spline on 8.2. 10 ring gear bolt vs 12 bolt on 8.2

8.2 elocker still recommended as second cheapest upgrade option.
8.2 open carrier looks more robust compared to elocker 8.2 carrier to be able to handle higher shock load. Cons is higher cost due to having to buy aftermarket gear.

 

[HomersCanyonero]

You missed the point. It's not dishing 8.2 elocker. You already have it. Enjoy it.
What I am saying 8.0 elocker is stronger than 8.0 open due to carrier design to allow the locking mechanism also helps stiffen the carrier.

Open 8.0 are known to be weak due to weak tower that felex under torque. Especially after losing preload. No question about it.

What I am saying is elocker 8.0 is only slightly less strong than elocker 8.2 due to very similar designs. Main differences is pinion spline 27/29 spline vs 30 spline on 8.2. 10 ring gear bolt vs 12 bolt on 8.2

8.2 elocker still recommended as second cheapest upgrade option.
8.2 open carrier looks more robust compared to elocker 8.2 carrier to be able to handle higher shock load. Cons is higher cost due to having to buy aftermarket gear.

I’m understanding better what you are saying.

It’s just interesting that you are noticing that Toyota made the 8.0 elocker version stronger than the 8.0 open version, but in the 8.2 diff they reversed it and made the 8.2 open version stronger than the elocked 8.2 version.

The bottom line is that you are offering advice that a factory elocked 8.0 with 4.3 gears from a Tacoma is cheaper and appears on par with a factory elocked 8.2 from a 5th gen 4Runner.