Tundra 10.5" Differential vs 9.5" w/ Pics

bjowett · 04-09-08, 05:59 PM

Hey everyone, thought you might like to see how BIG the Tundra diff actually is, so I set one next to an FZJ80 locking 9.5" unit. Spline count for the Tundra is 35, I believe shaft dia. at the spline is 1.41. I have yet to take this one apart to inspect things like bearings. These diffs and the axle are made by the Hino plant in Memphis ,Tennessee. I'll post more info as I have time to get into it... if you have any questions or requests for pics, just ask.

Mace · 04-09-08, 06:08 PM

What spline count is the pinion?? It looks the same as the 80 series unit.

Tapage · 04-09-08, 06:19 PM

Huge drive flange and the hole TLC 3rd member looks from a Suzuki compared to the Tundra ..

Intersting if you can take a comparision on the pinions.

bjowett · 04-09-08, 08:19 PM

I'm guessing it is probably larger with more splines despite the nut on the end being the same old size. I'll try to get to it tomorrow.

Other tidbits.

Crush sleeve is no more, back to the spacer with shims.

Side bearing preload is adjusted with shims just like the 9.5 elocker

Cruiserdrew · 04-09-08, 08:24 PM

What a beauty, and the ring gear is thicker too, like a Ford 9 inch.

When will the first one of these get swapped into a Land Cruiser?

peesalot · 04-09-08, 08:41 PM

not worth a swap IMO because it is a semi float axle, and it appears there is a ratio available problem. If a 4.10 ration could be found it might be possible but why ?

bjowett · 04-09-08, 09:30 PM

Ratios available are 4.10 and 4.30. I'll speculate that possibly this rear end is shared with one of the small Hino box trucks... which could allow a very wide range of ratios, many of them go the 3.xx up into the 5.xx range

Mace · 04-10-08, 12:02 AM

btw I was under the impression that all E lockers were 8" (ish) size..

Arya Ebrahimi · 04-10-08, 12:51 AM

The rear axle from an FZJ80 is a 9.5" diff.

Tools R Us · 04-10-08, 12:52 AM

Quote:

Originally Posted by Mace

btw I was under the impression that all E lockers were 8" (ish) size..

The 80 series rear is the same as the older Cruisers.

Tapage · 04-10-08, 11:14 AM

Quote:

Originally Posted by bjowett

Ratios available are 4.10 and 4.30. I'll speculate that possibly this rear end is shared with one of the small Hino box trucks... which could allow a very wide range of ratios, many of them go the 3.xx up into the 5.xx range

Interesting info ..

The pinion have the same single bearing config . ?

Eskimo · 04-10-08, 06:21 PM

Thanks for taking the pics.. that's bad ass.

TachedOutOffRoad · 04-11-08, 11:37 AM

Quote:

Originally Posted by Eskimo

Thanks for taking the pics.. that's bad ass.

x100

Put some calipers on the thick and thin part of gear if you get a chance and check the spline count on the pinion if you take it apart.

for you

bjowett · 04-11-08, 02:51 PM

Ummmmmm... just a little bigger. Pinion bearings are huge, as are the bolts. The side bearings are a smidge smaller than the ones on the 9.5" locker. A quick measurement gives a 1.37" OD splines, which I think number 35, but I did count quick. I'll measure the ring gear thickness next trip out to the barn.

Tapage · 04-11-08, 03:35 PM

Woooohooo this pinion looks tough ! and this bearing it's huge !

How much time to see and LC - Tundra hybrid rear axle . ?

bjowett · 04-11-08, 07:47 PM

I'm a little late with this. 4 Wheel and offroad covered some of it already.

2007 Toyota Tundra Rear Axle - 4Wheel & Off-Road Magazine

Looks like ARB has an airlocker in the works already!

Also shafts are 1.457 at the spline.

DHONDAGOD · 04-13-08, 12:54 AM

Nice....

Chris

Arya Ebrahimi · 04-13-08, 11:45 AM

Great info Brian! Did I miss the thread that explains why you have a Tundra 10.5" diff and are taking it apart? What's your latest crazy project?

bjowett · 04-13-08, 05:03 PM

Haha! I purchased an 08 Tundra as I need a pickup truck again... 0% interest was the deal maker... I get to leave my money where it will make money. I was curious about the rear diff, and this one popped up on ebay for $130, it's a new take out that had a bent flange and was replaced. I'm trying to leave the Tundra alone as much as possible and finish up old stuff.

TachedOutOffRoad · 04-14-08, 06:40 AM

Quote:

Originally Posted by bjowett

. . . this one popped up on ebay for $130 . . .

If they are that cheap, its worth getting a Diamond rear axle with shorter shafts made

request have been made with a 8" diff in the pic too

Tundra 10.5" Differential vs 9.5" LC w/ Pics - Pirate4x4.Com Bulletin Board

Please notice that the first line was giving you full credit!!

bjowett · 05-03-08, 01:22 PM

I have a couple 8"ers... I'll post up some pics soon.

wngrog · 05-03-08, 08:00 PM

Here I am agreeing with Pees in one thread and then back to normal....

Who cares if that is Semi Float? I hate FF anything inthe rear personally, but even so, the 3rd is wicked coo!

If I were still gay like some of you and wanted to keep it "all Toyota" that would be the MAC daddy 3rd....

bjowett · 05-03-08, 09:36 PM

Arb said to expect the air locker for it later this year. The front 8.7" air locker, which is shared with the 200 series, will be out this summer.

TachedOutOffRoad · 05-04-08, 06:33 PM

Quote:

Originally Posted by wngrog

If I were still gay like some of you and wanted to keep it "all Toyota" that would be the MAC daddy 3rd....

easy now . . . . . .

wngrog · 05-05-08, 06:57 AM

Quote:

Originally Posted by TachedOutOffRoad

easy now . . . . . .

Just trying to get a rise.....I tried that a coupe of times and it just cost me a bunch of $$

TachedOutOffRoad · 05-05-08, 07:55 AM

Quote:

Originally Posted by wngrog

Just trying to get a rise.....I tried that a coupe of times and it just cost me a bunch of $$

My Taco has very similar running gear on a buggy you had, and it may break some, but Im just not a sell out

I was hoping that the big money like you would be the first to put this 3rd in some diamond axles

Maybe next time, huh?

My Taco cranks but doesnt drive and Ive got the 1 year old going rummm-raaaummmn-raaummm because I start it up everyday to stay motovated

wngrog · 05-05-08, 08:38 AM

Quote:

Originally Posted by TachedOutOffRoad

My Taco has very similar running gear on a buggy you had, and it may break some, but Im just not a sell out

I was hoping that the big money like you would be the first to put this 3rd in some diamond axles

Maybe next time, huh?

My Taco cranks but doesnt drive and Ive got the 1 year old going rummm-raaaummmn-raaummm because I start it up everyday to stay motovated

You can just push that stuff so far before it is time to go big.

I have no desire to run Toyota stuff anymore. I am over it. Hell, that 3rd is probably built in Mexico anyway

TachedOutOffRoad · 06-23-08, 07:57 AM

Quote:

Originally Posted by bjowett

I have a couple 8"ers... I'll post up some pics soon.

04-09-08, 05:59 PM	#1
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	Tundra 10.5" Differential vs 9.5" w/ Pics Hey everyone, thought you might like to see how BIG the Tundra diff actually is, so I set one next to an FZJ80 locking 9.5" unit. Spline count for the Tundra is 35, I believe shaft dia. at the spline is 1.41. I have yet to take this one apart to inspect things like bearings. These diffs and the axle are made by the Hino plant in Memphis ,Tennessee. I'll post more info as I have time to get into it... if you have any questions or requests for pics, just ask. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

04-09-08, 06:08 PM	#2
Mace what he said Join Date: Feb 2002 Location: Las Vegas Posts: 11,207	What spline count is the pinion?? It looks the same as the 80 series unit. __________________ I am kinda gay....... My Myspace http://profile.myspace.com/index.cfm...endid=75712409 "Mary Poppins: In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game."

04-09-08, 08:19 PM	#4
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	I'm guessing it is probably larger with more splines despite the nut on the end being the same old size. I'll try to get to it tomorrow. Other tidbits. Crush sleeve is no more, back to the spacer with shims. Side bearing preload is adjusted with shims just like the 9.5 elocker __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

04-09-08, 08:24 PM	#5
Cruiserdrew IH8MUD Lifer Join Date: Mar 2003 Location: Sacramento, CA TLCA# 11734 Posts: 7,248	What a beauty, and the ring gear is thicker too, like a Ford 9 inch. When will the first one of these get swapped into a Land Cruiser? __________________ Andrew 1971 FJ-40 Rubicon tested, 2F powered, some mods 1976 FJ40 Rusting slowly in the back yard 1984 FJ-60 H55f, 4.11, Now SOA! 1989 FJ-62 117k-son's driver for now-low and slow 1997 FZJ-80 Driveway queen

04-09-08, 08:41 PM	#6
peesalot IH8MUD Lifer Join Date: Sep 2004 Location: in a house Posts: 1,585	not worth a swap IMO because it is a semi float axle, and it appears there is a ratio available problem. If a 4.10 ration could be found it might be possible but why ? __________________ John on the hawgs

04-09-08, 09:30 PM	#7
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	Ratios available are 4.10 and 4.30. I'll speculate that possibly this rear end is shared with one of the small Hino box trucks... which could allow a very wide range of ratios, many of them go the 3.xx up into the 5.xx range __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

04-10-08, 12:02 AM	#8
Mace what he said Join Date: Feb 2002 Location: Las Vegas Posts: 11,207	btw I was under the impression that all E lockers were 8" (ish) size.. __________________ I am kinda gay....... My Myspace http://profile.myspace.com/index.cfm...endid=75712409 "Mary Poppins: In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game."

04-10-08, 12:51 AM	#9
Arya Ebrahimi IH8MUD Lifer Join Date: Dec 2003 Location: Blacksburg, VA Posts: 2,590	The rear axle from an FZJ80 is a 9.5" diff. __________________ HOKIES UNITED Arya Ebrahimi '94 FZJ80 215k miles, locked, 4.88s, 285 Revo's, ARB Bullbar, Hella 4000's, homemade drawers '86 Toyota Pickup SAS'ed, welded, 4.88s, 38 TSLs, and lots o' tube

04-10-08, 06:21 PM	#12
Eskimo IH8MUD Lifer Join Date: Sep 2002 Location: Danville, PA Posts: 1,167	Thanks for taking the pics.. that's bad ass. __________________ Rich in NC FJ - '73 FJ-40 Cruggy - LSx/4-wheel steer Rockwells/4-link/coilovers/42's Build thread --> http://forum.ih8mud.com/hardcore-corner/124040-keeping-low-rockwells-k-under-knife-again.html '01 Chevy 2500HD 8.1 Allison Lux-o-tow

04-11-08, 02:51 PM	#14
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	Ummmmmm... just a little bigger. Pinion bearings are huge, as are the bolts. The side bearings are a smidge smaller than the ones on the 9.5" locker. A quick measurement gives a 1.37" OD splines, which I think number 35, but I did count quick. I'll measure the ring gear thickness next trip out to the barn. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

04-11-08, 07:47 PM	#16
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	I'm a little late with this. 4 Wheel and offroad covered some of it already. 2007 Toyota Tundra Rear Axle - 4Wheel & Off-Road Magazine Looks like ARB has an airlocker in the works already! Also shafts are 1.457 at the spline. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

04-13-08, 12:54 AM	#17
DHONDAGOD IH8MUD Regular Join Date: Aug 2005 Location: Got glitter?????? TLCA# 15288 Posts: 320	Nice.... Chris

04-13-08, 11:45 AM	#18
Arya Ebrahimi IH8MUD Lifer Join Date: Dec 2003 Location: Blacksburg, VA Posts: 2,590	Great info Brian! Did I miss the thread that explains why you have a Tundra 10.5" diff and are taking it apart? What's your latest crazy project? __________________ HOKIES UNITED Arya Ebrahimi '94 FZJ80 215k miles, locked, 4.88s, 285 Revo's, ARB Bullbar, Hella 4000's, homemade drawers '86 Toyota Pickup SAS'ed, welded, 4.88s, 38 TSLs, and lots o' tube

04-13-08, 05:03 PM	#19
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	Haha! I purchased an 08 Tundra as I need a pickup truck again... 0% interest was the deal maker... I get to leave my money where it will make money. I was curious about the rear diff, and this one popped up on ebay for $130, it's a new take out that had a bent flange and was replaced. I'm trying to leave the Tundra alone as much as possible and finish up old stuff. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

05-03-08, 01:22 PM	#21
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	I have a couple 8"ers... I'll post up some pics soon. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster

05-03-08, 08:00 PM	#22
wngrog IH8MUD Lifer Join Date: Feb 2002 Location: Canton, Mississippi TLCA# 8121 Posts: 2,538	Here I am agreeing with Pees in one thread and then back to normal.... Who cares if that is Semi Float? I hate FF anything inthe rear personally, but even so, the 3rd is wicked coo! If I were still gay like some of you and wanted to keep it "all Toyota" that would be the MAC daddy 3rd.... __________________ Rock Midget Motorsports www.rockmidget.com 2009 Calendars at www.rockmidget.com

05-03-08, 09:36 PM	#23
bjowett IH8MUD Lifer Join Date: Oct 2002 Posts: 1,782	Arb said to expect the air locker for it later this year. The front 8.7" air locker, which is shared with the 200 series, will be out this summer. __________________ Brian Western Massachusetts 08 Tundra Double Cab 5.7 TRD 93 FZJ80, locked, 4.6L, 6 speed, Orion <- now driving! 04 VW Touareg V8 w/ locker (hers) 80 FJ40 , 83k, PS and AC 05 Yamaha RS Rage Snowmobile 06 Suzuki King Quad 93 VW Corrado Syncro AWD 3.0L 51 Jowett Jupiter Roadster