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Old 11-01-2009, 02:56 PM   #1
Scooby Newbie
Member#: 221264
Join Date: Aug 2009
Chapter/Region: SWIC
Location: Abq, NM
2002 WRX Sedan

Default 2.5L DOHC '99 Legacy Engine into 02 wrx

I found this engine on craigslist and ive been wanting to rebuild an engine and put it in my car. ive done some research and from what ive read this engine is not intercooled but i dont know if its turboed. would it be beneficial to put this into my car (cause it is a 2.5)? i havent found any threads that talk about putting an older engine in a newer car
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Old 11-01-2009, 03:14 PM   #2
Scooby Specialist
Member#: 209896
Join Date: Apr 2009
Chapter/Region: NESIC
Location: dalton, nh
03 2.35L bugeye
holset he351ve @23psi


a 2.5 legacy motor will be slower than your turboed 2.0. idn how the swap would go, if you want the legacy motor in there till your 2.0 is built..?? but if that whats your doing sounds like a hassle.. get another 2.0 or a 2.5 sti short block and start building that and swap for ur oem engine when its built
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Old 11-01-2009, 04:38 PM   #3
Scooby Guru
Member#: 159682
Join Date: Sep 2007
Chapter/Region: NESIC
Location: Maine
1995 WRX
2015 F150


It's not really worth buying. There is not much from a 99 2.5 that you could use in your wrx. The heads and intake manifold are not compatible with your ECU. This is the noob section so I won't go into why, but trust me, it won't work. You could use the shortblock but the compression would be on the high side of what you'd want with a turbo. So again, really not worth buying for what you want to do with it.
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Old 11-01-2009, 09:44 PM   #4
Scooby Newbie
Member#: 213743
Join Date: Jun 2009
Chapter/Region: E. Canada
Location: Nova Scotia
2002 WRX
2003 Svt Cobra


from what i understand you would be better off just buying a sti short block, reusing your wrx heads...and if you decide to upgrade later you'll get more power/torque from the same mods than you would compared to your stock 2.0l.

Correct me if I'm wrong, just my .02.
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