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Old 03-09-2009, 12:21 AM   #126
Tonbone23
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im picking up an 05 sti trans to swap into my 07 wrx wat do i need to make the axles wrk i cant find the answer
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Old 03-31-2009, 02:43 PM   #127
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07 sti swap into my 07 wrx wagon.

i have tranny, sti driveshaft, r160 rear diff w/ r180 flange,


what exactly do i needa go buy from the dealership?

any seals? circlips? please someone who knows about the 07 sti into 06-07 wrx please. some info would be nice. ive read these threads over and over, just wanna get it straight.
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Old 04-05-2009, 12:17 AM   #128
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Quote:
Originally Posted by GullyWagon07 View Post
07 sti swap into my 07 wrx wagon.

i have tranny, sti driveshaft, r160 rear diff w/ r180 flange,


what exactly do i needa go buy from the dealership?

any seals? circlips? please someone who knows about the 07 sti into 06-07 wrx please. some info would be nice. ive read these threads over and over, just wanna get it straight.
i wish i could help u .. i just swaped a 06sti tranny into my 02wrx.. but the 02wrx uses female axles.. and urs uses male.. i know the 05+sti transmissions use male axles.. i had to buy some circlips and axle studs, and seals.. but like a said urs use male axles which require a different seal.. i would just recommend.. to take one of ur axles out. and just stick it into ur sti tranny.. see how that fits.. maybe the seal thats already there works..
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Old 04-10-2009, 01:09 AM   #129
hammrdwn510
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Quote:
Originally Posted by Tonbone23 View Post
im picking up an 05 sti trans to swap into my 07 wrx wat do i need to make the axles wrk i cant find the answer



THIS ^^^^



Quote:
07 sti swap into my 07 wrx wagon.

i have tranny, sti driveshaft, r160 rear diff w/ r180 flange,


what exactly do i needa go buy from the dealership?

any seals? circlips? please someone who knows about the 07 sti into 06-07 wrx please. some info would be nice. ive read these threads over and over, just wanna get it straight.

and THIS ^^^^
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Old 05-16-2009, 02:47 AM   #130
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interesting
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Old 05-17-2009, 10:56 AM   #131
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alright.. i have a 02 and looking to do a sti swap... what all do i need if i use a 2005 for the donor?
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Old 05-17-2009, 07:08 PM   #132
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everything
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Old 05-18-2009, 07:42 PM   #133
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This should help you 2.5rsti. It helped me.

http://forums.nasioc.com/forums/show...sti+trans+swap
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Old 07-16-2009, 07:52 PM   #134
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found answer.

Last edited by brain juice; 07-16-2009 at 09:09 PM. Reason: I'm a dumbass
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Old 09-03-2009, 12:10 PM   #135
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good thread. now you guys can find all your answers in the 1st page of it. Click the links!!!
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Old 10-20-2009, 02:35 PM   #136
junior1023
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Ill prolly have to be doing a swap like this soon
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Old 10-20-2009, 04:10 PM   #137
srREXed
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you should be smiling about 6mt greatness....
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Old 10-20-2009, 10:15 PM   #138
my name is joe
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Quote:
Auto driveshaft or STi ds and enlarge the holes on the ds and yoke or switch the yoke on the R160 to the bigger R180 yoke if you can get one.
sorry if this was covered but what is a Ds? drive shaft? why the capital?
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Old 11-17-2009, 11:22 AM   #139
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Lots of good info here, but has anyone or does anyone know if a 04 STi tranny with out DCCD will fit a 08 WRX? Im told it does and the axles and rear diff are right, just a question about the drive shafts and shift boot. Can someone tell me if the info i got is right and what drive shaft i need as well as if my stock 5speed shift boot will work?
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Old 11-17-2009, 12:37 PM   #140
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If I'm not mistaken, the 04 trannies all have require a 3.9 rear diff. Your 2008 WRX is a 3.545. That's a no go right there. You'll need to change that.

And if it is without DCCD, it is not a USDM trans. You probably know this, but just an FYI.
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Old 11-17-2009, 12:42 PM   #141
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Anyone know where i can get a website or somthin to confirm this rear diff problem? And yes i know it is not USDM. Anything else that anyone can see being a problem?
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Old 11-17-2009, 01:30 PM   #142
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some info on the 08 WRX i found
2008 Subaru Impreza WRX Edmunds Test Drive
says the 08 WRX has a 3.9 final drive, and this site says the 04 STI had the same 3.9
List of Subaru transmissions - Wikipedia, the free encyclopedia
weather the JDM 04 STi had the same is what im tryin to find out. Anyone know?
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Old 11-17-2009, 03:55 PM   #143
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Quote:
Originally Posted by FrdFrmBrdn View Post
some info on the 08 WRX i found
2008 Subaru Impreza WRX Edmunds Test Drive
says the 08 WRX has a 3.9 final drive, and this site says the 04 STI had the same 3.9
List of Subaru transmissions - Wikipedia, the free encyclopedia
weather the JDM 04 STi had the same is what im tryin to find out. Anyone know?
I'm not sure you're understanding this though... The 2002-2005 WRX has a 3.9 final drive too... but this does not mean that the rear diff is 3.9 (39:10). They infact have a 39:11 which is a 3.545. The center diff needs to be taken into account.

If your car has a 1.1:1 center differential then you can have a 3.9 final drive, but not a 3.9 rear diff. Get it?

3.545*1.1 = 3.9 final drive

The 2004-05 STi has a 1:1 center diff. Therefore, those cars have a true 3.9 rear diff (39 tooth ring gear and 10 tooth pinion).

The 2006+ STi for example has a 1.1:1 center diff. It is spec'd as having a 3.9 final drive, but it works like this: 1.1*3.545 = 3.9. (39 tooth ring gear and 11 tooth pinion)

I am not sure how the WRX is set up, but I'm pretty sure they have a 3.545 rear diff on the 2008+ ones.

If your trans requires a 3.9 final drive (which it does) and has a 1.1 center diff then it needs a true 3.9 rear diff (39:10).

Is it a JDM 2004 STi 6MT? If so, then you need a 3.9 ratio rear diff (either R160 or R180). If it's a JDM forester or a trans from some other country specific model, then all bets are off as I don't know what final drive they require.

Cliff notes: Final drive does not equal rear differential ratio in all cases.

Last edited by kpluiten; 11-17-2009 at 04:00 PM.
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Old 11-18-2009, 10:36 AM   #144
Rokkit
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Quote:
Originally Posted by kpluiten View Post
I'm not sure you're understanding this though... The 2002-2005 WRX has a 3.9 final drive too... but this does not mean that the rear diff is 3.9 (39:10). They infact have a 39:11 which is a 3.545. The center diff needs to be taken into account.

If your car has a 1.1:1 center differential then you can have a 3.9 final drive, but not a 3.9 rear diff. Get it?

3.545*1.1 = 3.9 final drive

The 2004-05 STi has a 1:1 center diff. Therefore, those cars have a true 3.9 rear diff (39 tooth ring gear and 10 tooth pinion).

The 2006+ STi for example has a 1.1:1 center diff. It is spec'd as having a 3.9 final drive, but it works like this: 1.1*3.545 = 3.9. (39 tooth ring gear and 11 tooth pinion)

I am not sure how the WRX is set up, but I'm pretty sure they have a 3.545 rear diff on the 2008+ ones.

If your trans requires a 3.9 final drive (which it does) and has a 1.1 center diff then it needs a true 3.9 rear diff (39:10).

Is it a JDM 2004 STi 6MT? If so, then you need a 3.9 ratio rear diff (either R160 or R180). If it's a JDM forester or a trans from some other country specific model, then all bets are off as I don't know what final drive they require.

Cliff notes: Final drive does not equal rear differential ratio in all cases.
Not to jump in or whatever... But this is what the 2008 service manual states: - I think his car does have a 3.9


Last edited by Rokkit; 11-18-2009 at 11:00 AM.
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Old 11-18-2009, 01:37 PM   #145
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Quote:
Originally Posted by Rokkit View Post
Not to jump in or whatever... But this is what the 2008 service manual states: - I think his car does have a 3.9


OK, in an attempt to figure this out, I called my local parts department. This is what I was told:

For the 2008 WRX with a 5MT, he is showing two different transmission part numbers and two different rear differential part numbers. One shows a 3.9 r&p and the other a 4.11 r&p.

He said they were not interchangeable (obviously), but he could not give me a solid reason when there were two different parts.

Then I asked him what engines were they associated with and he told me one was for an EJ253 and the other for a EJ255. So, it would appear that one is for the non-turbo (EJ253) and the other is for the turbo (EJ255 WRX). He did not specify which was which and I forgot to clarify. He's not on his lunch break.

Why their computer system shows the EJ253 when the WRX is brought up is beyond me.... We did not have a vin to supply so I figure he may have searched Impreza rather than WRX thinking they are one in the same. Eitherway, he said with a VIN, they can find exactly what your car has.

I've always known the 2.5i (non-turbo) 5MT's to have 3.9 R160's in the past...
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Old 11-30-2009, 08:32 PM   #146
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Quote:
Originally Posted by FourOnTheFloor65 View Post
Actually only 2005 and up Spec C front diffs are hellical 2001-2004 Spec C are Suretrac thats what mine is.

This is the best thread ever for transmission and diff identification....

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

And when you get into JDM and European R180s there is all kinds of weird stuff. The one I have uses the smaller R160 driveshaft bolt pattern on the front yoke. Some don't have a rear diff temp sensor in the drain plulg location. A lot of them are clutch type, some are Suretrac and a few newer ones are Torsen type.
whats the difference between hellical and suretrac?
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Old 11-30-2009, 09:51 PM   #147
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okay so i have an 05 2.5rs that is currently auto i was originally planning on doing a 6 speed swap sometime next summer if everything goes right since i am only 18 and parents do not want to pay the insane insurance prices on a wrx or sti. this will sorta be my grad/get into college present i guess.
anyways i will have 5k to spend for the tranny swap but am thinking that it would be better just to do the entire drivetrain swap since i plan on sti swapping later on, alot later on.
so my question is about how much more would i need to save for a complete drivetrain swap if it was to be done at a shop? or should i just do the 6 speed swap now and save the rest for later?
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Old 12-01-2009, 03:53 AM   #148
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^^^^
Save your money until you have a second car for a DD then swap, or not do it at all. Not to be a buzz kill or anything, but it will take a lot of money to swap over the vehicle to a WRX/STI. Yes, yes, I know you will plan to do it in time, as I said with my WRX to upgrade to the point where I had the 6-speed and mods to get where I wanted my car.

If you do pursue with the swap, wait until you have a second car. This doesn't hinder your mobility (work, class, going home, running errands, ...) if something goes wrong. Working on cars can sometimes be a pain, especially when you buy used parts from the internet.

I say spend the money on swapping the engine, ecu, wiring, turbo, etc... and then swap the drivetrain after all said and done. It seems pointless to put in a drivetrain when you aren't putting down a lot of power.

Just thoughts. But none the less, good luck
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Old 12-01-2009, 10:49 AM   #149
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Quote:
Originally Posted by shiny467 View Post
okay so i have an 05 2.5rs that is currently auto i was originally planning on doing a 6 speed swap sometime next summer if everything goes right since i am only 18 and parents do not want to pay the insane insurance prices on a wrx or sti. this will sorta be my grad/get into college present i guess.
anyways i will have 5k to spend for the tranny swap but am thinking that it would be better just to do the entire drivetrain swap since i plan on sti swapping later on, alot later on.
so my question is about how much more would i need to save for a complete drivetrain swap if it was to be done at a shop? or should i just do the 6 speed swap now and save the rest for later?

I'll give you an idea. I just swapped a COMPLETE 2005 STi drivetrain onto a 2002 WRX (not mine). Here's the price break-down:

2005 STi SWAP: ~$5400
Transmission
Clutch kit & Flywheel with 14K miles (basically new)
Linkage
Knob and interior trim
drive shaft
Entire rear subframe with (diff, aluminum linkage, hubs, e-brake cables, axles)
Front axles
Brembos on all four corners
BBS wheels with feash powder coat

Additional Items Included: ~$1780
Megan Coilovers (stock suspension only works on 2004 STi): ~$800
2007 Gold BBS wheels and tires with literally NO wear: ~$800 (sweet score, didn't like the BBS that came with the swap)
Motul fluid: ~$80
misc bolts, seals, etc: ~$100

Labor: ~$1200
I took this job because I was excited to do such a complete build and needed a little bit of money to pay off my built motor. I did it in my spare time over the course of a month. The guy was a great guy to work with and I gave him a low price accordingly. I also did a radiator and a turbo while I was in there. He also tipped me well and let me keep some of the parts off the old WRX drivetrain (I estimated that into the price above). The car was plain awesome! It came together excellent.

Expect a shop to get it done quicker (if they are decent and you have all the parts), but they will charge you in the $1500 to $2000 range depending on shop and all.
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Old 12-01-2009, 02:38 PM   #150
RallyIt07
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Add about 10% of total cost for misc items that you will need.
I had to get
new brake pads because they were worn to 3mm of pad left
new lateral link and bolts (were rusted into the hubs)
few other stuff like bolts and washers that were lost in customs
I still need to a get a rear strut (one of them is blown).

Take everything with a grain of salt when buying used.
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