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Rear axle upgrades...Does it ever end?

06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
I rebuilt my eaton e locker before the rubicon. First e locker lasted me years but with the 37s its just not lasting. Ran the rubicon, worked like a charm, ran the beginning of fordyce worked like a charm, also worked like a charm on gold mtn as well as drinkwater flats which is local to me but heard a few pops. I went up for a last minute gorman camping/wheeling trip. I am climbing up the big rock hill in the middle of the 4x4 area. Its gotten worse then ive seen it in probably in forever. Locked front and rear and as I am climbing up a rock DING, DING. E locker stopped working. My buddies all agree it wasnt like I was at redline just spinning and it grabbed, I literally was crawling and it happened without abusing it. I was able to still make it up without the rear locker but the side gear and pins are toast after 5 runs and I just rebuild the locker back in June.

So I will not be using the rear locker again, I will use something else or a different axle. These are my options...

If I keep the 10 bolt, its been a great axle, never broke a R&P, never broke a shaft just these eaton e locker pins.
Cost effective to expensive top to bottom
-Grab my old open carrier from the 10 bolt and put a lunchbox auto locker in it.
-buy an automatic detroit locker
-get an OX locker, have one in the front and has never skipped a beat...
-ARB air locker

OX and ARB are most expensive but they are selectable lockers which is nice but I also want to try an auto locker and some think it may cause havoc on the ABS/traction control but who knows until someone tries it out.

Option 2 14 bolt
-old school 14 bolt
with this I would need a disc brake conversion kit w/ ebrake, a 67in WMS 14 bolt, shave kit or DIY shave for more clearance at the pumpkin, OEM GM tone rings from Zach, modify the tone rings and sensors to make them work, 6 lug hubs from spyntec OR 8x6.5 to 6x5.5 wheel adapters.

New school 14 bolt also known as the AAM 14 bolt
-already has disk brakes and a GOOD parking brake, need 8x6.5 to 6x5.5 adapters, OEM tone rings and modification to the housing to make it work. then Shave the pumpkin

So whats the consensus here? I have only seen 2 rear axle swaps done. Recon's dynatrac prorock 60 which retained electronics and was the pricest option and dana 60 H3 who did a 14 bolt but did not attempt to retain the ABS, it would be nice to have a cheaper DIY option that retains the electronics

Lastly, I do know about "crash locking" the eaton e locker and unforunately in my situation when it popped I had it already locked, I sheered the pins shortly after 37s and did it again 5 runs later. In muddy conditions I am sure the locker will last on 37s but in the rocks where there is no give and a lot of load it seems as if 35s is the max I would go on this locker. Mine still locks up but in low load situations once a lot of load is put on the rear end the locker slips and unlocks.
 

ReconH3

Guardian Angel
Messages
2,288
Location
Raleigh, NC
Ask ARB about a 35 spline option. They usually can upgrade the gears to 35 spline if they have another compatible locker with 35.


"Ex Umbris Venimus"
 

06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
I will send ARB an email. Somewhere I thought I read 35 spline shafts won't fit in a 10 bolt but I'm sure ARB knows
 

Cowboy

Well-Known Member
Messages
87
Location
Alameda
Good stuff. I'm learning a lot. Keep us posted


Can't make it through the day? Back up, and get a run at it!
 

Scarsman

Sponsor
Messages
1,561
Location
Monroe, WA
Not sure if they make one for your axle, but you might look at the Lokka for an automatic option. They are the same thing as the Ausie locker, just the American franchise. Heard a lot of good about them. I plan to put one in my XJ eventually.
 

4speedfunk

Well-Known Member
Messages
4,250
Location
Tardville
09-up H3s come with an improved rear 10-bolt. It's still an 8.6 and still 30 splined but, it has a bigger inner pinion bearing.
If you do end up swapping to something bigger...You might want to take a look at late model rear axles....AAM & Sterling. I'm not sure but the latest offerings might already have ABS sensors on each corner. Of course factory discs would be nice, (never seen a disc kit that I liked). I would probably use the 8-lug rig and swap out the front hubs. Then you could run H1 beadlocks and get rid of the spacers.
 
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06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
Unfortunately the lokka locker isn't made for a 10 bolt but I wanna try the lunchbox auto locker to see how it behaves in an H3. I still have my stock open carrier sitting in a box after I put in the eaton.

CJ that's what I want to look at then If I go 8 lug though I lose H3 brakes/calipers
 

06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
Ive been doing some more searching, I can pick up a new school 14 bolt with factory discs and factory parking brake for 400.

Unfortunately the spartan locker only fits in 1999 and older open 10 bolt carriers so the cheap option becomes less cheap tracking down an old school carrier.

Powertrax auto locker is 475

Grizzly locker is 600

Detroit is 700

Ox all said and done is around 900-1k but I could my sell the SOLID diff cover for 40 bucks and a broken eaton e locker with wiring harness for a 160.

Thing is wheeling season is coming up. I wanna try the lunchbox but I am afraid of the sidehilling issues and spending that much money on an auto locker I might as well spend a tad more for the OX or just pony up and do the 14 bolt. My idea for ABS is turn the ID down on the tone ring to slip it over a 14 bolt shaft, pull my ABS sensors out of the 10 bolt, measure how far the sensor is from the tone ring. Once I get those I would then drill into the tube and replicate the distance and mounting.

Some concerns are getting the tone ring into the tube and making it permanent on the shaft which could make moving the shaft in and out a PITA or making it slide and retain it in the housing, not sure how its retained in the 10 bolt but could find out.

These are just some of my thoughts so far.

Recon are your sensors more towards the axle end or more towards the factory location?
 

speedy

Sir Welds a Lot
Messages
359
Location
Dayton NV. Battle Born!!
You need to get out the tape measure before you buy any rear end. The closest i found to the H3 was the H2 rear end
Or search Newb:giggle:
 
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06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
I'll search what the H3 is lol WMS on a new school 2500hd 14 bolt is 68.5in

I also spoke to ox the other day. Bebe was right, the eaton will break again. Well less then 5 trips later it's toast. 35s can make the locker last a while but 37+ they just die quick
 

06 H3

a.k.a. "The Jackal"
Messages
9,506
Location
Meridian, ID
I gotta double check the years but if I remember the years correctly, 02-08 or 09 from a gasser 6.0 AAM1050 aka new school 14 bolt is the same then
 
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