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Old 11-11-2019, 10:23 PM
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2012 rear diff

So, a few months ago I changed my diff oil to find metal pieces. Upon Inspection, here is what I found.
Guessing these are spider gears?
Aside from the obvious tooth damage, the gear is also loose on the spline.
Will be going for a rebuild in the next few weeks.

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Old 11-11-2019, 10:31 PM   #2
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Throw a Powertrax Grip Pro in there. Nice upgrade.

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Old 11-11-2019, 11:42 PM
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Throw a Powertrax Grip Pro in there. Nice upgrade.
As nice as it would be to upgrade, I'm on a budget as we just bought a house.
I go to 4 wheel parts for stuff like this. They whited me about $1200 cad parts and labour.
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Old 11-12-2019, 08:58 AM   #4
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Quote:
Originally Posted by Red Loctite View Post
As nice as it would be to upgrade, I'm on a budget as we just bought a house.
I go to 4 wheel parts for stuff like this. They whited me about $1200 cad parts and labour.
Ouch, I just had one done and it was $400 for the diff and $250 to put it in... Would have beeen around $850 cad.

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2006 LJ Rubicon - Solar Yellow - Very Stock'ish - The Press Casual LJ-R build
2012 JKU Sahara - Pro Comp LED Headlights - PRS Audio mod- SWS - GraBars - Bestop Cargo Cover
- Mopar 2" Frankenlift - Teraflex Falcon Shocks - RE TB/Brackets - JKS mount/Bilstein stabilizer -
Rugged Ridge XHD
bumper- Yukon Gears - G2 Diff Covers - Pro Comp 8186 - Milestar Patagonia 35's

- TORQ Locker - 1310 Driveshaft - PowerTrax Grip Pro - Full Core 4x4 Control Arms and Track Bars
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Old 11-12-2019, 10:04 AM   #5
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What did the $1200 cad cover?
The difference in labor to replace the spider gears should be about the same as to install the Powertrax mechanical LSD (or a TrueTrac). The only difference should be the difference in parts cost, which isn't that much (especially with the Powertrax).
The thing with replacing the spider gears is the new ones will do the same thing eventually. That is a common issue with the stock set up.
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Old 11-12-2019, 03:23 PM
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Got a quote for an eaton truetrac installed for 1400 here in calgary. Wondering on other options, we don't offroad the jeep at all (yet) so we don't need super beefy, but I want better than oem , as I don't want to do this again
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Old 11-12-2019, 04:06 PM   #7
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Quote:
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Got a quote for an eaton truetrac installed for 1400 here in calgary. Wondering on other options, we don't offroad the jeep at all (yet) so we don't need super beefy, but I want better than oem , as I don't want to do this again
I like the TrueTrac. It is what we have in the rear axle.
But there is now a cheaper option that uses the same or similar geared LSD principle. It is from Powertrax, called the Grip Pro I believe. And it is offered at a lower cost than the Eaton TrueTrac.
Either option should be a great option, and either should last the life of the Jeep. Of course, I have faith in the Eaton design more than the other, because Eaton is a brand I trust. But you would not be the first to use the Powertrax Grip Pro. I would imagine it will be fine as well.
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Old 11-12-2019, 04:17 PM
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I can get a spartan without the carrier installed for under 1100. Thoughts on spartan?
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Old 11-12-2019, 04:24 PM   #9
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Quote:
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I like the TrueTrac. It is what we have in the rear axle.
But there is now a cheaper option that uses the same or similar geared LSD principle. It is from Powertrax, called the Grip Pro I believe. And it is offered at a lower cost than the Eaton TrueTrac.
Either option should be a great option, and either should last the life of the Jeep. Of course, I have faith in the Eaton design more than the other, because Eaton is a brand I trust. But you would not be the first to use the Powertrax Grip Pro. I would imagine it will be fine as well.
FWIW, the PowerTrax Grip Pro is actually a 5 gear system instead of a 4 gear system like in the TrueTrac. According to PowerTrax, that makes theirs "stronger" than the Eaton... Not that I see a bunch of broken Eatons out there.
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2006 LJ Rubicon - Solar Yellow - Very Stock'ish - The Press Casual LJ-R build
2012 JKU Sahara - Pro Comp LED Headlights - PRS Audio mod- SWS - GraBars - Bestop Cargo Cover
- Mopar 2" Frankenlift - Teraflex Falcon Shocks - RE TB/Brackets - JKS mount/Bilstein stabilizer -
Rugged Ridge XHD
bumper- Yukon Gears - G2 Diff Covers - Pro Comp 8186 - Milestar Patagonia 35's

- TORQ Locker - 1310 Driveshaft - PowerTrax Grip Pro - Full Core 4x4 Control Arms and Track Bars
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Old 11-13-2019, 07:10 AM   #10
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I can get a spartan without the carrier installed for under 1100. Thoughts on spartan?
A Spartan Locker is an auto locker as I understand it. That is something I would not recommend for a daily driver. A mechanical limited slip like the TrueTrac or the Powertrax Pro Grip works great as a daily driver. But a Spartan Locker is not something I would suggest for a daily driver. It can have an abrupt locking action that could make driving less than predictable.
To quote someone on this, "Because of its aggressive locking action the Spartan is not recommended for vehicles that see regular ‘daily driver’ usage.".
I would look for a qualified independent shop. replacing you diff with a TrueTrac or Pro Grip should not be that expensive, even in Canadian money. But I could be wrong. You aren't re-gearing. I would expect $400 - $600 for the LSD and a few hundred dollars for the install. However, now would be a good time for re-gearing if you are so inclined.
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Old 11-13-2019, 09:29 AM
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I'm thinking of just replacing the spiders atm. Something else came up and now funds aren't available. I'm thinking it looks pretty simple to do myself, no? I'm a pretty mechanical inclined guy. I know I'll have to do it again later, but it's my cheapest option now

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