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Old 10-31-2007, 06:37 PM   #1
MrMcCrackin
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Default Strange Axle

It appears to NAPA, BAP, ect ect that the FRONT axles for Subaru are all the same regardless of model:

Quote:
1999-2007 Subaru Impreza
EMPI Front Axle Assembly W0133-1614156


1999-2007 Subaru Impreza • 1999-2001: Outback
--------------------------------------------------------------------------------
• 1999-2001: RS
--------------------------------------------------------------------------------
• 2002-2003: OutbackAutomatic
--------------------------------------------------------------------------------
• 2002-2003: TSAutomatic
--------------------------------------------------------------------------------
• 2002-2005: WRXAutomatic
--------------------------------------------------------------------------------
• 2002-2005: RSAutomatic
--------------------------------------------------------------------------------
• 2004-2007: Automatic
--------------------------------------------------------------------------------
• 2005-2005: Outback SportAutomatic
--------------------------------------------------------------------------------
• 2004-2005: WRX STI


is this true??????????
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Old 10-31-2007, 08:32 PM   #2
z
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I don't believe that's correct.

04 has two different styles depending on build date.

Early 04 is stubs coming out of the trans, female inner CV joint
Late 04 is female trans, male inner CV.

I think the early 04 axles may be compatible with only auto trans subie models, as far as length and splines, but the STi axles are a different part # as far as subaru parts. The STi axle bars are beefier, as well as having a heavy duty DOJ87 inner CV (double offset joint), as opposed to the wrx (mt and auto which has an SFJ82 (shudderless freering tripod joint)

I did a bunch of research when I was looking to replace mine...

you can see the auto wrx and rs have the same part # here...
(4th, 5th and 6th one down)
It's the same part # that you came up with for the early 04 STi...won't work for late 04 or 05 STi

http://www.thepartsbin.com/catalog/p...=axle_assembly
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Old 10-31-2007, 09:19 PM   #3
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^^

so - since i have a early sti & a 2001 JDM 6mt with stubs sticking out of the front diff - it should work?

i called and validated that the axle is M/F not M/M ends
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Old 10-31-2007, 09:27 PM   #4
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I would think so...

So you have an early 04 STi, but have a JDM 6MT that you're going to drop in? Did something happen to your USDM 6MT? Or did you buy a shell with no drivetrain?
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Old 10-31-2007, 09:44 PM   #5
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so from your other thread you said...

Quote:
Originally Posted by MrMcCrackin View Post
^^


tanx - that helps


i also found this - trans code: TY856WB1BA = JDM 2001 A RA (w DCCD)

...
Is that the trans code on the sticker on your gearbox?
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Old 10-31-2007, 10:11 PM   #6
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long story

i bought the first 04 sti to hit the state


later - i got involved in a bad deal and car got gutted and replaced with a 2001 RA drivetrain and v8 JDM heads with a built 2.5 bottom

the rear diff and supposedly the front diff were replaced with cusco diffs - the center dccd was replaced with a RWD spool

im tryin to get the car back to AWD - its missing the center diff and front axles
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Old 10-31-2007, 10:56 PM   #7
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gotcha...

Does the sticker on your JDM 6MT say TY856WB1BA?

or did you get that # from the rallispec site?

JIC, the sticker is on the top of the bellhousing
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Old 10-31-2007, 11:14 PM   #8
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^ if the 6MT is currently in your car, you can see the sticker if you look down under the IC with a flashlight (slightly on the drivers side of the bellhousing, near the top)

There's 3 different JDM 6MTs for 2001

TY856WB1AA - STi
TY856WB1BA - RA
TY856WB1CA - STi + RA

see the differences here...

decoder:
http://forums.nasioc.com/forums/show....php?t=1225160



This is from the JDM catalog from the rallispec site.
It looks like there's 2 different axles for those transmissions.
The main difference seems to probably be just the ABS ring on the hub side. Are you running the Brembos still? or do you have the JDM brake setup? With or without ABS?

I would think (you'll probably want to talk to Dave at Rallispec though) that if you're running with ABS (either the JDM brakes or stock STi brembos) that the EMPI axles would probably work.

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Old 11-01-2007, 11:21 AM   #9
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Quote:
Originally Posted by zavigm View Post
gotcha...

Does the sticker on your JDM 6MT say TY856WB1BA?

or did you get that # from the rallispec site?

JIC, the sticker is on the top of the bellhousing

yep - that is what the sticker on the bell housing read.


its a JDM driveline on my usdm sti body - still using usdm bembos and hubs, ect


yes with ABS -


i will be able to pick one axle up from NAPA this afternoon to check it out and fit it tonight before "special ordering" the other since they only had 1 in stock at the warehouse


thanks again for all your help!


btw - the steelership wants $400 for a single front axle!
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Old 11-01-2007, 11:40 AM   #10
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Quote:
Originally Posted by MrMcCrackin View Post
yep - that is what the sticker on the bell housing read.


its a JDM driveline on my usdm sti body - still using usdm bembos and hubs, ect


yes with ABS -


i will be able to pick one axle up from NAPA this afternoon to check it out and fit it tonight before "special ordering" the other since they only had 1 in stock at the warehouse


thanks again for all your help!


btw - the steelership wants $400 for a single front axle!
no prob...check back in with the results from the napa axle-

yeah, $400 is crazy. Some of those online places have that axle (empi axle) for $85 (new, no core)

They're probably not going to be as stout as the stockers but for $85, they're practically disposible
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Old 11-01-2007, 11:41 AM   #11
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well it makes perfect sense that subaru tried to cut production costs by using the same axle in as many different configurations as possible
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Old 11-04-2007, 06:43 PM   #12
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good news - i was able to fit the one front axle i got from NAPA


it fits and better yet - i got a speedo reading on the road!!!!!


thanks guys for all ur helpz!
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Old 11-04-2007, 07:13 PM   #13
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no prob...glad to help. saw your other post too.

So, do you just have it in there, but no center diff sending power to the front yet?
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Old 11-04-2007, 07:18 PM   #14
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BTW - how much did napa want for the empi axle?
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Old 11-04-2007, 08:05 PM   #15
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^^


true - road is turning the axle which is turning the center diff which is turning the speedo gear

no center diff yet - still havent ordered it yet or the transfer gears

got to get the other axle ordered and get the car tuned on a mustang dyno before i go down the center diff path


oh - NAPA wants $66 for each axle with a $100 core charge!


the guy at NAPA told me just return any old busted axle for the core refund - so i am returning some busted up rear axles!
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Old 11-04-2007, 09:25 PM   #16
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yeah, I guess as long as you return something!

Check online though, I had found some NEW empi axles for $85 or so, no core charge.

just plug that part# into google
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Old 11-04-2007, 09:46 PM   #17
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So just for reference, here is the difference between a DOJ (double offset joint) and a SFJ (shudderless freering tripod joint, although pic below is just a TJ, there are several types)

DOJ




Tripod Joint

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Old 11-05-2007, 10:14 AM   #18
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i believe the fronts are DOJ

and the rears are TJ
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Old 11-05-2007, 10:25 AM   #19
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i dont remember what the rears look like, but i remember when i replaced the rear center bars with the 1000hp centers from the driveshaft shop the CV's had the ball+cage design

- i CAN tell you that the front axle i just installed is in fact a DOJ - unless there are several types of inside designs for the exact same cup configuration
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Old 11-05-2007, 11:03 AM   #20
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All are DOJ except maybe the RS models. The rear one looks like the picture at the diff end, but the axle end in the rear still uses race/cage/balls. The outer rears are in a spherical cup and not just straight sided like the cup in the DOJ pic and cannot move in and out. Only the diff end slides in and out. I didn't upgarde the fronts.

Subaru service manual says the rear outers are TJ, yet the manual is wrong.

Typically the TJ joints are not very strong.

Man, I knew I should have took some pics this weekend. I just rebuilt my rear axles with the Driveshaft Shop upgraded axles/race/cage/balls for 1000 hp rating. No need to upgrade the cups at all being that they are made of the japanese version of 4130 Chromoly. I did this mainly to fit this bad boy in



07' Sti 3.54 ratio diff with Perrin cover and alum. driveshaft.
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Old 11-05-2007, 11:14 AM   #21
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^^

makes sense to me - DOJ for sure then
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Old 11-05-2007, 11:54 AM   #22
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yeah, I know the stock fronts are DOJ...when I was reading on empi's website, they said that their replacement axles may not be the exact type of joint and may in fact be TJ, but will still fit. That would be nice if they do make these with a DOJ
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Old 11-05-2007, 11:57 AM   #23
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well - slip down to ur local NAPA when u need new axles - they are DOJ
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Old 11-05-2007, 01:41 PM   #24
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Quote:
Originally Posted by MrMcCrackin View Post
well - slip down to ur local NAPA when u need new axles - they are DOJ
sweet! report back if you snap them in a day though
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Old 11-05-2007, 01:49 PM   #25
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doubt it - tires break loose way to easy to place any real stress on the drive line





not to mention with da tarmac center diff - the fronts will only see 210whp


Last edited by MrMcCrackin; 11-05-2007 at 01:58 PM.
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