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Old 02-28-2015, 01:18 PM   #1
Scooby Newbie
Member#: 405713
Join Date: Nov 2014
Default Need advice just bought wrx and motor blew

So I bought a 05 wrx and love my car but the motor blew, not sure what happened yet, need advice on replacing motor or put sti motor in? Would sti motor bolt up to the 5 speed please no rude comments i haven't had the car long so I'm very new to subie stuff thanks

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Daves05 is offline  
Old 02-28-2015, 02:25 PM   #2
Scooby Newbie
Member#: 167725
Join Date: Dec 2007
Location: 909 CA
2004 WRX


How do you know that the motor "blew"? Did you do a compression check? What are the symptoms that make you believe the motor is bad? As far as replacements, yes an STI motor will bolt up but you would need to run an STI ECU to control the acvs. If you want the 2.5l and don't want the troubles of swapping out ECU's and harnesses then I would suggest a hybrid motor. That's the EJ257 short block with EJ205 heads. You will need to have the heads deshrouded, get a hybrid piston set, or thicker head gaskets in order to lower the compression ratio or you will have a lot of problems tuning it. Search out the hybrid build information on here. I have a hybrid in my 2004 and I love it. I also went the head modification route as I believe that to be the best way to build a hybrid.
Josh909 is online now  
Old 02-28-2015, 02:25 PM   #3
Scooby Specialist
Member#: 254851
Join Date: Aug 2010
Chapter/Region: BAIC
Location: Nor-Cal Bay Area
2002 WRX wagon 5mt


Yes an STI motor will bolt up, but there is lots more to it than that. LOTS!

I'd suggest searching, studying, researching, reading, reading, reading, reading, reading, reading, reading and more reading. Don't start buying crap before you know what's what.

If you need the car right away and don't have time then the best options are a known good used motor or a new short block.

Find out for sure what happened to the current one BEFORE you do anything!!!
Bikelok is online now  
Old 02-28-2015, 02:31 PM   #4
Scooby Specialist
Member#: 204578
Join Date: Mar 2009
Chapter/Region: MAIC
Location: Philadelphia
S54 E46, N54 E82,
N55 E84, AKA REX8


Broken record post:

Right now, you own a 10 year old WRX worth about $3k.

I recommend not putting $5k plus into getting it back on the road.

Go to your nearest scrap yard/craigslist/etc. and find a running, decent miles long block for ~$2k. Where are you located?

Drop the motor in (takes a few hours). Part out the other motor and recoup much of your costs.

Go on living your life.
SoapBox is offline  
Old 02-28-2015, 04:06 PM   #5
Medium Frank
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
2014 Porsche
GT3 (Currently on Fire)


Soapbox is spot on.

This also shows why you MUST get a pre purchase inspection and compression/leak down test.

Yes, for the record the STI motor will work. (Hell the motors are damn near the same in 75% of the way anyways)

However without knowing the how, why etc we really cannot provide much useful information.
HinshawWRX is offline  
Old 03-01-2015, 12:21 AM   #6
Scooby Specialist
Member#: 329822
Join Date: Aug 2012
Location: Roseville, CA
2012 WRX, Sedan


Just sell it!!
MedicDG is offline  
Old 03-01-2015, 10:55 AM   #7
Scooby Newbie
Member#: 381985
Join Date: Feb 2014
Chapter/Region: Tri-State
Location: Western NY
04 Wrx Stage III


First off, if you're thinking about fixing it yourself, maake damn sure you have all of the resources in the entire world to help you do it. And about 2000$ extra over your spending limit put aside. Then buy a ford ranger on Craigslist for $500 for a new daily. Try to pick up a wrx or sti that's been hit in the rear end from an insurance auto auction. Then you can begin down the long path called: fixing my blown up car
QsR is offline  
Old 03-04-2015, 09:03 PM   #8
Newbie Moderator
Member#: 91347
Join Date: Jul 2005
Chapter/Region: NESIC
Location: Dublin, Ireland
'13 XV Crosstrek,
1050 Triumph Speed Triple


Loyale93 is offline  
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