Upgrade Rear Drive Shaft or carry spare? - Toyota FJ Cruiser Forum
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post #1 of 17 (permalink) Old 08-22-2019, 11:17 AM Thread Starter
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Upgrade Rear Drive Shaft or carry spare?

For some background, I'm heading to Moab in two weeks for a week of hitting the best trails (Fins n Things, Hellís Revenge, Top of the World, Elephant Hill, Poison Spider/Golden Spike/ Gold Bar Rim, Steel Bender, etc.).

I'm getting my FJ ready and have started to pile up my "spare parts", such as CV axle, inner/outer tie rods, fluids, etc. and it got me thinking, what about the rear drive shaft?

I have a full set of RCI steel skids, but the drive shaft is exposed. One hit from a rock could put it out (obviously I won't be aiming to hit a rock with my drive shaft). This leads me to question whether I should:

A) Upgrade the rear drive shaft before going
B) Carry a spare OEM drive shaft
C) Say F it and not worry about it

I called around and found a local driveline shop that said they'd build me a custom 3" drive shaft with reinforced tubing for $375 (that's balanced, too). I can get the OEM for this price as well. Unsure of how to go on this, just don't want to be left with FWD only on the trails, especially since I'm the only Toyota in a group of Jeep's that are all built and on 35's/37's.
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post #2 of 17 (permalink) Old 08-22-2019, 11:41 AM
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Re: Upgrade Rear Drive Shaft or carry spare?

F it and not worry about it . but if you are just pick up a used oem .
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post #3 of 17 (permalink) Old 08-22-2019, 11:46 AM
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Re: Upgrade Rear Drive Shaft or carry spare?

I'd worry more about busting a front CV axle than the rear driveshaft. I've been wheeling for 18+ years and never had to replace the driveshaft.
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post #4 of 17 (permalink) Old 08-22-2019, 12:00 PM
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Re: Upgrade Rear Drive Shaft or carry spare?

Done all your trails 3 or 4 times each and others in CA more difficult. I have only broken inner tie rods and front shafts. Rear shaft is almost bulletproof. Donít think you have all the tools and lube to change the front shaft, know you do. Same with tie rods do you have what it takes to take one out of R&P?


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post #5 of 17 (permalink) Old 08-22-2019, 12:29 PM
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Re: Upgrade Rear Drive Shaft or carry spare?

Don't go looking for a can of worms......
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post #6 of 17 (permalink) Old 08-22-2019, 12:39 PM Thread Starter
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Firemedic831 previously said: View Post
F it and not worry about it . but if you are just pick up a used oem .
Used are ~$250 from what I’ve found

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I'd worry more about busting a front CV axle than the rear driveshaft. I've been wheeling for 18+ years and never had to replace the driveshaft.
Great data point

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Done all your trails 3 or 4 times each and others in CA more difficult. I have only broken inner tie rods and front shafts. Rear shaft is almost bulletproof. Don’t think you have all the tools and lube to change the front shaft, know you do. Same with tie rods do you have what it takes to take one out of R&P?
Good to know, I’ve got new CV’s, inner/outer tie rods, and the associated tools (hub puller, 35mm socket, torque wrenches, tie rod wrench, joint separator, etc.) 2 qts of diff fluid, and grease gun full of superlube. Anything else I’m missing?

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Don't go looking for a can of worms......
Thanks for the reality check. It’s easy to get carried away with prepping for this
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post #7 of 17 (permalink) Old 08-22-2019, 01:58 PM
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Re: Upgrade Rear Drive Shaft or carry spare?

Maybe a dumb question But do you know how to change the CV ? Have you changed 1 before ?. Sometimes they can be fun to get out .
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post #8 of 17 (permalink) Old 08-22-2019, 02:09 PM Thread Starter
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Maybe a dumb question But do you know how to change the CV ? Have you changed 1 before ?. Sometimes they can be fun to get out .
Good question, and yes I do. I just replaced the spindles with a gusseted total chaos spindle. This involved pulling the hub and disconnecting it from the UCA/LCA. Plus I have a full downloaded pdf version of the FSM.
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post #9 of 17 (permalink) Old 08-22-2019, 02:39 PM
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Re: Upgrade Rear Drive Shaft or carry spare?

Quote:
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Don't go looking for a can of worms......
OH! I love that song!!
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post #10 of 17 (permalink) Old 08-22-2019, 03:25 PM
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Re: Upgrade Rear Drive Shaft or carry spare?

I have a spare driveshaft and decided not to bring it to Moab. I’ve done all those trails (and more) multiple times and never saw a direct hit to it, or saw anyone else break theirs. Sounds like you’re well peprepared and agree you probably won’t need a spare driveshaft. Have a great time and show those Heeps how Toyota rock



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Last edited by debFJVT; 08-22-2019 at 03:30 PM.
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