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Old 02-27-2016, 04:50 PM   #1
Troll Boy
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Member#: 58910
Join Date: Apr 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
2015 WRX STi
2012 Legacy

Default Blown/Seized motor in a 2005 Legacy 2.5 GT

I was hoping to get some help on a few engine issues. About 2 weeks ago my 2005 Subaru legacy 2.5 GT started showing a P0302 misfire code every 3-4 days or so, given it was my daily I hardly get on the throttle. Well i confirmed the cylinder is blown and have to rebuild the motor. Seeing as it is my daily with only a turbo back and a tune I was planing on just replacing the stock short block and getting the heads checked and machined and throw it back on. The main questions is does the STI short block bolt right up and have the same tune as the 2005 legacy/intake manifold/ and all other bits. Or if i get an sti short block will there be some other parts I need. I found a short block for 2,000 and was wondering if that is cheaper then getting a shop to rebuild the motor with stock parts?

Second main questions is today my girlfriend was driving her 2005 Subaru Legacy 2.5 GT and hasn't been checking the oil, looks like the car shut off when driving so I suspected the motor seized. I throw a breaker bar on the main crack and tried to turn it once we got it home and it wont budge. Can her motor even be rebuilt? I'm assuming due to metal expansion that the short block is toast but I should be able to reuse her heads?

Since I have both of our car broken atm I'm looking for the fastest, and cheapest method to get them back on the road and us to work.
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Old 02-28-2016, 10:05 AM   #2
Troll Boy
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Member#: 58910
Join Date: Apr 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
2015 WRX STi
2012 Legacy

Default

can anyone help? I'm assuming the E255 and the E257 are the same except for the pistons?
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Old 02-29-2016, 01:03 AM   #3
Patrick Olsen
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Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

You might have more luck asking in the MAIC forum, as there's a lot more traffic there than there is in this forum, and your questions really aren't specific to the Legacy.

If you buy the $2k short block, who is going to do the labor to install it? You can price out the parts you would need to do a rebuild of your existing engine to get an idea of what it would run you.

Without knowing what failed in your GF's engine or how exactly it seized it there's really no way to say whether or not it can be rebuilt.
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