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Old 05-13-2013, 02:48 AM   #1
WRXmeinMD
Scooby Newbie
 
Member#: 354904
Join Date: Apr 2013
Chapter/Region: MAIC
Location: Dundalk MD
Vehicle:
03 Wrx
MBP

Default 03 Wrx 2.0 motor and trans replacement JDM or USDM???

Well to start off Ive been searching through the forums (17 pages) so far and havent come up with a definitive answer to my questions. Let me give you the run down, the car is a 03 5speed (bad 3rd), evo 3 16g, front mount, fuel pump, megan racing turbo back, invidia up pipe, and synapse bov running 23psi (tuned). Im not worried about the #'s it puts down and am actually looking to tune it down some (daily/mpg). I know I have many options and am 100% new to Subarus so bear with me but my questions are:

1. Should I just rebuild the trans and call it a day? Average cost? Remember the car will see NO track time, NO auto-x, and hardly any abuse.

2. Purchase a used trans from a member and take a chance? Its the cheapest way but not the best option.

3. Purchase a Jdm motor and trans, use the trans and keep the motor for future swap when the one currently running dies?


If #1 would a shop like say AAMCO work? or would I need to take it to a specialty/subaru only shop?

If #2 Anyone have one for sale?

If #3 What Jdm swaps are drop in with minimal changes? Ive done many honda swaps both direct bolt in and also custom swaps where I had to make/splice harnesses etc.... but Subarus are a different animal.

Again im not a 18yo kid who wants to race everyone on the streets, just an enthusiast who wants a fun DD. Im also not looking to go the 6speed route.


Thanks in advance for any and all help. If theres anything else please let me know.
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Old 05-13-2013, 05:31 PM   #2
oldgovernor
Scooby Newbie
 
Member#: 286224
Join Date: Jun 2011
Location: STL
Vehicle:
2004 WRX

Default

Quote:
Originally Posted by WRXmeinMD View Post

1. Should I just rebuild the trans and call it a day? Average cost? Remember the car will see NO track time, NO auto-x, and hardly any abuse.

2. Purchase a used trans from a member and take a chance? Its the cheapest way but not the best option.

3. Purchase a Jdm motor and trans, use the trans and keep the motor for future swap when the one currently running dies?

If #1 would a shop like say AAMCO work? or would I need to take it to a specialty/subaru only shop?

If #2 Anyone have one for sale?

If #3 What Jdm swaps are drop in with minimal changes? Ive done many honda swaps both direct bolt in and also custom swaps where I had to make/splice harnesses etc.... but Subarus are a different animal.
To start off, eliminate #3 as an option. It is not necessary at all, costs way more, and doesn't really offer that much benefit. Even if you found a 5spd STi trans by itself you still will have to do a lot more work.


#1 is a fine option, especially if you want a more durable transmission and have some serious cash to throw down. You do not want to use AAMCO. Use a tuner shop that specializes in transmissions. You will need to buy a gearset (type RA, ppg, etc...), here are some examples:
http://www.rallispec.com/prod_trans.htm
http://www.ppgearbox.com.au/page.asp?categoryid=22
http://www.iaperformance.com/index.p...lbe4r8ih5r96d4
http://www.vividracing.com/catalog/v...07-p-4758.html

Then find a decent shop and get your core and the gearset to them. Here is PPG's list for example:
http://www.ppgearbox.com.au/page.asp...rs&regionid=12

#2 is the cheapest/easiest way to get your car going. You can do this yourself pretty easily too. If you buy local or from someone decently reputable you shouldn't be a problem. You'll risk breaking it again but it sounds like you're trying to tune your vehicle down anyway. You should buy mine , 04 5mt w/ 70k on it, everything works:

http://i.imgur.com/DMB5Lkr.jpg

I'm posting it on the FS section for $800 in a couple minutes here.


Also, read this: http://forums.nasioc.com/forums/showthread.php?t=986710 and this: http://forums.nasioc.com/forums/showthread.php?t=187454
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Old 05-23-2013, 04:10 PM   #3
naCAnItihS
Scooby Specialist
 
Member#: 259481
Join Date: Sep 2010
Chapter/Region: NESIC
Location: South Coast, MA
Vehicle:
2002 WRX STI Wagon
MBP

Default

you can always upgrade to an 06+ wrx trans. you will need the push type clutch and clutch fork along with a matching rear end. cheaper than a rebuild.

however I have the version 6 type RA gearset in my 02 trans
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Old 05-24-2013, 07:16 AM   #4
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

Quote:
Originally Posted by WRXmeinMD View Post

3. Purchase a Jdm motor and trans, use the trans and keep the motor for future swap when the one currently running dies?

If #3 What Jdm swaps are drop in with minimal changes? Ive done many honda swaps both direct bolt in and also custom swaps where I had to make/splice harnesses etc.... but Subarus are a different animal.
.
Read the EJ207 owners thread and the EJ207 Info thread.
By the time you're done you can ask couple questions in the thread and you'll feel confident to do the swap.
Don't have aamco do your swap. If you can't do it, bring it to a dealer or Subaru shop.
I had my swap done by the dealer, because the car was in for valve adjustment, when it was misfiring and was found with low compression.
I did not want to test the compression before the valve adjustment.

The dealer gave me a good price to do the swap, because they all enjoyed the idea of working on it, they had never done this before and I enjoyed the idea that, if there was something wrong with the swap engine, I could tell the engine vendor that I need a replacement under warranty, because the dealer did the work.

I always do all my work otherwise, except for some suspension work that involves torching something out or welding.
For valve adjustment, the cost of buying shims almost equals the cost of having the dealer do it , that's why I sent the car there originally.
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