Axle - Gears - Lockers GX470 Upgrade Thread (1 Viewer)

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Quite a few. Almost all the linkages are different, the ABS is different (you would lose ATRAC).
 
In process with a low mileage 2014 8.2" donor open rear end. Swapping to 4.56 ratio and ARB rear locker.

To the question above, I found it on Hollanderparts.com. Prices are all over the place and mostly high, but was able to find a decent deal, especially given the low miles. $1300 to the door.
 
One update, that rear end will not accept the GX470 brake rotors.
 
Anyone running a Mechanical Locker like the Yukon Grizzly in an 8" rear end? I understand the 8" is failure prone. Would the locker help or hurt durability?
 
Maybe they aren’t so failure prone as we think. Maybe that has more to do with the loss of pre-load as mentioned earlier in this thread.
In my talks with Yotamasters over the phone when I started this thread they pointed out that these axles are much bigger then what the mini truck guys use. Maybe a gear refresh should be a PM item if you are going to seriously wheel the GX?
 
I have my 35's and lift here and about to order some gears for the diffs. Dan Kunz, Are you happy with 4.56's? Would 4.88's be to much? What is your rpms at 70mph currently with the 4.56's? Don't want to do this step more than once!!!
Thanks
 
In run around 2300-2500 RPM in the 70-75 range. 4.88s will be too much gear
 
Anyone running a Mechanical Locker like the Yukon Grizzly in an 8" rear end? I understand the 8" is failure prone. Would the locker help or hurt durability?

I've always gravitated towards a lunchbox rear locker like the Lokka or the Aussie Locker, but I was hesitant to get one due to the possibly weaker 8" rear.

Now that there's information on tightening the bearings (CBPL Refresh) to make the rear 8" more durable, does it make more sense to put in a rear Lokka or Aussie Locker?

Of course, I'm assuming that this is much more cost effective alternative than finding/installing an 8.2" FJC rear axle with e-locker or installing a rear 8" ARB air locker or 8" Harrop e-locker.
 
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I've had an Aussie locker in my Prado 120 rear for over 5 years now and no issues. Works a treat in the rough stuff and doesnt cost as much as the ARB. Road manners are still fine. I don't think I'll ever need a locker up front but if I did I would have go ARB unless I swopped out the IFS for a solid axle.
 
I've had an Aussie locker in my Prado 120 rear for over 5 years now and no issues. Works a treat in the rough stuff and doesnt cost as much as the ARB. Road manners are still fine. I don't think I'll ever need a locker up front but if I did I would have go ARB unless I swopped out the IFS for a solid axle.
4.0L or V8 in your Prado? I am leaning towards the Yukon Grizzly in the rear right now and leaving the front as is. Hoping and thinking the 8" will be fine for a while with 33s and a light foot.
 
The 8" survive under a lot of abuse on diesel 120 and 4.0. The aggressive throttle mapping on the GX470 4.7L V8 is partially to blame.
 
4.0L or V8 in your Prado? I am leaning towards the Yukon Grizzly in the rear right now and leaving the front as is. Hoping and thinking the 8" will be fine for a while with 33s and a light foot.
4.0 L. I'm running 33s as well without any regearing. I think the teeth on the spider gear is the weak spot in those 8"diffs so replacing it with the Aussie locker probably strengthens it. The V6 kicks out at least 179kw which can put a lot of strain on the diff when u lose traction in the rough stuff.
 
It's the preload in the 8". It works loose due to the tower design allowing flex. Stiffening up the carrier won't help. Have to reset preload on an interval or upgrade. That's all that helps.
 
One update, that rear end will not accept the GX470 brake rotors.

I upgraded to the 8.2, but for ease of swapping and because the 8.2 didn't have e brakes, I just used my 8.0 axles, rotors, and ebrakes. If I put the 8.2 axles and rotors in, can I use the 8.0 ebrakes and calipers?
 
If you use the 8.2 axles the axle has a lip that prevents the 470 rotors from seating. You can use the 470 axles in the 8.2 and use your 470 rotors. If you swap EVERYTHING, no worries. If you hybrid swap (8.2, 470 axles, hub, rotors, etc) no worries.

The 470 and 460 have the same rear calipers. Different rotors for the sake of the axle lip. That's it.
 
It's the preload in the 8". It works loose due to the tower design allowing flex. Stiffening up the carrier won't help. Have to reset preload on an interval or upgrade. That's all that helps.

When you refer to the tower are you talking about the caps that hold the preload adjusters?
 
When you refer to the tower are you talking about the caps that hold the preload adjusters?
Yes. Not just the caps, but that entire archway. It is thinner than the 8.2 (even though the 8.2 has nearly identical R&P). That is what makes the 8.2 stronger. No flex in that arch that allows the preload to back off.
 
Yes. Not just the caps, but that entire archway. It is thinner than the 8.2 (even though the 8.2 has nearly identical R&P). That is what makes the 8.2 stronger. No flex in that arch that allows the preload to back off.
So if you kept tightening the preload at intervals you would eventually bend that archway out at an angle? Is there a stud girdle available like the 8.4" has?
 
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