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Old 09-26-2006, 04:07 PM   #1
gotsol
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Default 6-speed swap, 07 Spec.B Axels?

For those who are swapping in 6-speeds into the a WRX

Since the 07 Spec B has the r180 diff with the six speed and the bolt patern for the wheels is the same as the WRX (5x100) I think the 07 SpecB axels would work on a WRX and r180 without having to swap hubs.

But I'm not sure if Legacy axels are longer then Impreza axels.

any thoughs?
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Old 09-26-2006, 04:54 PM   #2
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the 07 uses a 5x100 setup?! What rear brakes are on the spec B?

I am gonna have to make a trek to the local dealership and investigate this.

Its this or DSS r160 hubs to r180 dif axles.
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Old 09-26-2006, 04:59 PM   #3
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The brakes are the same as the LGT. Ill peak at the 07 spec-b, its like 10 feet from me
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Old 09-26-2006, 05:00 PM   #4
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I cant tell on the axles. The rear does look like an R180 though.
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Old 09-26-2006, 05:22 PM   #5
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Alright, the FRONT Spec-B 6-speed axles are the same as the LGT axles. REARS are different.

Last edited by Kostamojen; 09-26-2006 at 05:56 PM.
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Old 09-27-2006, 08:15 AM   #6
gotsol
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The 07 uses the same wheels as 06, which are 5x100. Can you check the rear axels of the SpecB vs STI?

Keep in mind, factory SpecB axels probably cost as much as the Driveshaft Shop (I have no nubmers I am just speculating)
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Old 09-27-2006, 09:03 AM   #7
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are you sure the spec b has the r180 ...


its not the bolt pattern thats differnt/the proublem is the diamater/spline count of the axel/hub
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Old 09-27-2006, 02:20 PM   #8
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Spec-B rear diff: 1.1qt capacity, helical LSD.
STI rear diff: 1.1qt capacity, mechanical LSD.

Every other rear diff has a .8qt capacity... Its a R180.

I cant tell about the rear axles yet though, still ressearching.

(Im not using part numbers btw, im using the tech documents)
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Old 09-27-2006, 02:25 PM   #9
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Rear axles...

Spec-B: EBD+DOJ, .87in Diameter, 375.1mm length
STI: EBD+EDJ, .98in diameter, 316mm length

So no, they are not the same.
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Old 09-27-2006, 02:32 PM   #10
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whats the length of RS axles?
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Old 09-27-2006, 02:56 PM   #11
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What year?
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Old 09-27-2006, 03:08 PM   #12
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Odd, im looking at 03 axles, and the rear axles on the 03's are not the same length on each side The left is 358, right 368. Wagons are 10mm shorter.
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Old 09-28-2006, 06:49 PM   #13
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Quote:
Originally Posted by Kostamojen View Post
Spec-B rear diff: 1.1qt capacity, helical LSD.
STI rear diff: 1.1qt capacity, mechanical LSD.

Every other rear diff has a .8qt capacity... Its a R180.

I cant tell about the rear axles yet though, still ressearching.

(Im not using part numbers btw, im using the tech documents)
SA-WEET!!!
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Old 09-28-2006, 06:54 PM   #14
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Well I gotta pull my axles out and see what they are. I think they are 00 rs axles. (lsd).

I have a v4-6 RA 4.44 r180. I would love to just grab some spec B axles and have them fit. But for somereason, I am doubting this.

Anyone work for a dealership and wanna loan me some axles. I can test them out. If they work, i'll buy them
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Old 09-28-2006, 08:53 PM   #15
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Most axles like that arent stocked, they would have to be special ordered (there are far to many kinds of axles to keep in stock).

The spec-b axles wont fit, I can tell you that for sure. They are 7cm longer than STI axles...
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Old 09-29-2006, 08:18 AM   #16
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Quote:
Originally Posted by Kostamojen View Post
Most axles like that arent stocked, they would have to be special ordered (there are far to many kinds of axles to keep in stock).

The spec-b axles wont fit, I can tell you that for sure. They are 7cm longer than STI axles...
that's what I was afraid of, thanks for looking into this though
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Old 09-29-2006, 12:32 PM   #17
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Oh, and dont forget that since 2000, Legacys have had the multi-link rear suspension and COMPLETELY different rear hubs than Imprezas...
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Old 09-29-2006, 01:33 PM   #18
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what is the gear ratio on the spec B r180 diff?
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Old 09-29-2006, 01:43 PM   #19
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3.545 with 39/11 gear teeth.
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Old 09-29-2006, 06:04 PM   #20
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so i will assume this can be techincally a upgrade for a wrx rear end, that is planning to still use stock tranny. (but remembering to use a sti rear axles and brembos and hubs)
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Old 09-29-2006, 11:50 PM   #21
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Might work, im not sure if the spec-b helical LSD has different splines than the STI LSD though... Ill have to check that next week.
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Old 09-30-2006, 12:13 AM   #22
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are you saying these spec B's will fit my BE? hmmm.... I need an R180, then again they likely won't hold 600whp either.

Ben
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Old 09-30-2006, 05:40 PM   #23
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I dont know if the BE hubs are the same as the current gen hubs, but ill check that too...
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Old 10-02-2006, 12:44 PM   #24
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I can't tell if the spines are the same or not between the spec-b and sti.

Looks like the rear hubs are the same, or at least the rear suspension components are on the 2000-04 legacys and 05+ legacys.
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Old 10-16-2009, 02:50 AM   #25
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how thick are wrx rear axles? Early 04 model... If they are the same thickness as the spec b axles couldnt you swap the center axle portion with just the cv inner/diff side components?
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