Tundra rear axle in FJ? - Toyota FJ Cruiser Forum
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post #1 of 28 (permalink) Old 11-14-2014, 10:08 AM Thread Starter
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Tundra rear axle in FJ?

I've tried to search, and haven't found much. I know about the Rockjock 60 and the 9" options, but wanted to search a Toyota possibility. Plus, I see Allpro's link to their Rockjock is no longer working.

The Tundra 10.5" axle is super stout, and I would say it is much stronger than either of the other options. Ruffstuff makes a fabricated housing already, Nitro Gear makes 4:88 gears (which is what I already run), and ARB makes an air locker.
I have also heard that the Tundra wheel sensors are the same as the FJ's, but I can't confirm.

The only real issues I see are width and lug pattern. Both can be solved with custom axles.
The other issue is cost.
Other options may be cheaper, and I know that, so please don't make this a "you should use THIS axle instead" thread.

I'm just sick of busting my ring and pinion. I want to fix it once and for all.

I do a lot of wheeling and camping, as well as a lot of towing. My travel trailer weighs just under 5000lbs. I want to get a new Tundra for daily driving and towing, but I'm at least a year away from that.

2007 FJ Cruiser OME 3" lift, 37" BFG's, Allpro front bumper with Warn 10000lbs winch, Allpro sliders, Bandi mount, Allpro roof rack, home-built rear bumper, URD long tube headers, Flowmaster stainless cat-back, 4:88 Nitro gearsPIC
2010 Tundra SR5 TRD i-Force ST edition. 5.7L in a RCSB on 35" BFG's.
2014 23' Trail Trek travel trailer.
89 4Runner - Allpro solid axle swap, 37" BFG's, injected 5L V-8.VID
86 LWB Suzuki 38" Swamper SX's Toy running gearPIC
75 Celica Very modified.PIC

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post #2 of 28 (permalink) Old 11-14-2014, 11:12 AM
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Re: Tundra rear axle in FJ?

So you are busting Nitro gears? Multiple sets!?

-Adam

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post #3 of 28 (permalink) Old 11-14-2014, 11:25 AM Thread Starter
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Re: Tundra rear axle in FJ?

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iwashmycar previously said: View Post
So you are busting Nitro gears? Multiple sets!?
I have Nitro 4:88's in the front. They are fine.
I have busted the stock rear a long time ago, and a few sets of 4:56's in the past, and now have a chipped tooth in the rear 4:88. I think it was a Yukon gearset.

I don't have a heavy foot, but I am running 37's, and I use it a LOT.

2007 FJ Cruiser OME 3" lift, 37" BFG's, Allpro front bumper with Warn 10000lbs winch, Allpro sliders, Bandi mount, Allpro roof rack, home-built rear bumper, URD long tube headers, Flowmaster stainless cat-back, 4:88 Nitro gearsPIC
2010 Tundra SR5 TRD i-Force ST edition. 5.7L in a RCSB on 35" BFG's.
2014 23' Trail Trek travel trailer.
89 4Runner - Allpro solid axle swap, 37" BFG's, injected 5L V-8.VID
86 LWB Suzuki 38" Swamper SX's Toy running gearPIC
75 Celica Very modified.PIC
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post #4 of 28 (permalink) Old 11-14-2014, 11:33 AM
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Re: Tundra rear axle in FJ?

I don't see a reason why a tundra axle wouldn't work. However, to make it work, you would need to narrow it, add fj suspension brackets, get custom length axle shafts, new wheels or wheel adapters (you can't change to the 6 bolt pattern and keep the tundra brakes). As for the wheel speed sensors, I would keep the tundra wheel bearings and speed sensors since they should plug right in (if not, I would just change the fj plug to the tundra plug, as the computer shouldn't be able to tell the difference)



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-Offroad pkg, trail gear sliders, 35x12.5x17 Nitto Trail Grappler on 17x9 Level 8 Bully Pro, Icon 2.5 Ext. Travel Coilovers, Light Racing UCA, MetalTech Long Travel Rear w/ Icon 2.5 remote res , EM rear UCA, MetalTech rear LCA, Icon panhard bar, 1/2" Bandi lift, Man-a-fre skids, TC A-arm skids, FJToyman shock skids, CB w/ Bandi mount, AFE HT exhaust, Demello front bumper, Warn M8000 w/ synthetic, 4.56 Gears, ARB locker, Safari Snorkel
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post #5 of 28 (permalink) Old 11-14-2014, 11:40 AM Thread Starter
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Re: Tundra rear axle in FJ?

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epm131 previously said: View Post
I don't see a reason why a tundra axle wouldn't work. However, to make it work, you would need to narrow it, add fj suspension brackets, get custom length axle shafts, new wheels or wheel adapters (you can't change to the 6 bolt pattern and keep the tundra brakes). As for the wheel speed sensors, I would keep the tundra wheel bearings and speed sensors since they should plug right in (if not, I would just change the fj plug to the tundra plug, as the computer shouldn't be able to tell the difference)
I don't doubt that it can be done. I'm just looking to see if it HAS been done. Learn from other's experiences and all.

I'm not a stranger to fabrication. I know what it will take. I'm just looking for possible tips and tricks from someone who's actually done it already.
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2007 FJ Cruiser OME 3" lift, 37" BFG's, Allpro front bumper with Warn 10000lbs winch, Allpro sliders, Bandi mount, Allpro roof rack, home-built rear bumper, URD long tube headers, Flowmaster stainless cat-back, 4:88 Nitro gearsPIC
2010 Tundra SR5 TRD i-Force ST edition. 5.7L in a RCSB on 35" BFG's.
2014 23' Trail Trek travel trailer.
89 4Runner - Allpro solid axle swap, 37" BFG's, injected 5L V-8.VID
86 LWB Suzuki 38" Swamper SX's Toy running gearPIC
75 Celica Very modified.PIC
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post #6 of 28 (permalink) Old 11-14-2014, 02:34 PM
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Re: Tundra rear axle in FJ?

I dont think it has yet been done...but bulldog had a good reply to this old thread on the subject: https://www.fjcruiserforums.com/forum...dra-axles.html

That is why the only other axle you typically see on FJs is that RockJock, but I noticed you have already put questions out on those threads.

-Adam

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post #7 of 28 (permalink) Old 11-14-2014, 08:19 PM
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Re: Tundra rear axle in FJ?

Could you source a newer then 2007 rear FJ axle with the larger ring gear? I would think that that would be a far more financially savvy choice and it would be pretty much a plug and play. Try to find a front totalled FJ and go from there.
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post #8 of 28 (permalink) Old 11-14-2014, 08:24 PM
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Tundra rear axle in FJ?

I have seen an FJ with a Ford 9". Something about a Ford 9" in an FJ appeals to me.. That 1970...Ford....Bronco...thing

I guess Rockjock uses a Ford 9" I thing the one I saw was a self installed Ford 9", non Rockjock version. Old school!

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post #9 of 28 (permalink) Old 11-16-2014, 04:45 PM Thread Starter
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Re: Tundra rear axle in FJ?

Quote:
fxntime previously said: View Post
Could you source a newer then 2007 rear FJ axle with the larger ring gear? I would think that that would be a far more financially savvy choice and it would be pretty much a plug and play. Try to find a front totalled FJ and go from there.
This option would cost almost the same, with virtually no strength advantage. The difference is so small, i wouldnt even consider it an 'upgrade'.

For now, i have ordered yet another gearset, as this is my daily driver.

Im now trying to decide on upgrading the rear axle, or buy a new Tundra as a daily driver, and just keep the Cruiser as a weekend warrior.

2007 FJ Cruiser OME 3" lift, 37" BFG's, Allpro front bumper with Warn 10000lbs winch, Allpro sliders, Bandi mount, Allpro roof rack, home-built rear bumper, URD long tube headers, Flowmaster stainless cat-back, 4:88 Nitro gearsPIC
2010 Tundra SR5 TRD i-Force ST edition. 5.7L in a RCSB on 35" BFG's.
2014 23' Trail Trek travel trailer.
89 4Runner - Allpro solid axle swap, 37" BFG's, injected 5L V-8.VID
86 LWB Suzuki 38" Swamper SX's Toy running gearPIC
75 Celica Very modified.PIC
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post #10 of 28 (permalink) Old 11-16-2014, 04:51 PM Thread Starter
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Re: Tundra rear axle in FJ?

Quote:
Smalldog previously said: View Post
I have seen an FJ with a Ford 9". Something about a Ford 9" in an FJ appeals to me.. That 1970...Ford....Bronco...thing

I guess Rockjock uses a Ford 9" I thing the one I saw was a self installed Ford 9", non Rockjock version. Old school!
The Rockjock 60 uses a 10" Dana 60 ring and pinion. Not a 9" Ford.
Its also not a removable 3rd style, like the Toyota and ford 9".
Plus it rides on the weaker coast side of the gear, since its a high pinion.


I just cant make up my mind!!!

2007 FJ Cruiser OME 3" lift, 37" BFG's, Allpro front bumper with Warn 10000lbs winch, Allpro sliders, Bandi mount, Allpro roof rack, home-built rear bumper, URD long tube headers, Flowmaster stainless cat-back, 4:88 Nitro gearsPIC
2010 Tundra SR5 TRD i-Force ST edition. 5.7L in a RCSB on 35" BFG's.
2014 23' Trail Trek travel trailer.
89 4Runner - Allpro solid axle swap, 37" BFG's, injected 5L V-8.VID
86 LWB Suzuki 38" Swamper SX's Toy running gearPIC
75 Celica Very modified.PIC
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