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08-13-2010, 06:56 PM | #1 |
Scooby Newbie
Member#: 189686
Join Date: Sep 2008
Location: San Jose, California
Vehicle:2004 Impreza 2.5RST Java Black Pearl |
wrx engine with 2.5l heads
Has anyone heard of this build? wrx engine with sti heads?
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08-13-2010, 07:23 PM | #2 |
Scooby Specialist
Member#: 73270
Join Date: Oct 2004
Chapter/Region:
TXIC
Location: Edwards AFB, CA
Vehicle:2002 WRX Wagon Midnight Black Pearl |
I've never heard of it personally.
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08-13-2010, 07:45 PM | #3 |
Scooby Specialist
Member#: 178426
Join Date: Apr 2008
Location: FoCo
Vehicle:2010 S4 Gray |
2.0L sb with 2.5L heads? New to me. Although I'm sure someone out there has done it.
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08-13-2010, 08:09 PM | #4 |
Scooby Newbie
Member#: 189686
Join Date: Sep 2008
Location: San Jose, California
Vehicle:2004 Impreza 2.5RST Java Black Pearl |
yeah it a unorthodox build but im wordering are they any kind of hidden potential with in it because it's just more air / displacement i think...not sure but hopefully someone did it out there
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08-13-2010, 09:09 PM | #5 |
Scooby Guru
Member#: 4414
Join Date: Feb 2001
Location: Dublin, CA
Vehicle:2002 WRX Sedan Midnight Black |
Mushroom tip is really not a very good combustion chamber design.
Not to mention the potential head gasket issues. 92mm bore with heads designed for 99.5mm bore is not going to end well. The STi heads are not really a better design than the 2.0L heads. They are different, but not really better. Use STi cams on a 2.0L head if you want better breathing. get overseas 2.0L AVCS heads if you want AVCS. |
08-13-2010, 09:16 PM | #6 |
Scooby Specialist
Member#: 92003
Join Date: Jul 2005
Chapter/Region:
SCIC
Location: Tatooine
Vehicle:04 bicycle! |
you've never heard of it because it doesn't work
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08-13-2010, 10:23 PM | #7 |
Scooby Guru
Member#: 178811
Join Date: Apr 2008
Chapter/Region:
MAIC
Location: MoCo
Vehicle:2011 White Corolla Over 400hp |
Overseas AVCS heads? **** that! Get JDM bigport non-avcs heads. V6 or 7, I don't recall exactly.
AVCS is nice, but wiring it into a car that doesn't have it is a nightmare. |
08-13-2010, 11:34 PM | #8 |
Scooby Specialist
Member#: 92003
Join Date: Jul 2005
Chapter/Region:
SCIC
Location: Tatooine
Vehicle:04 bicycle! |
its not really that hard if you get a v7 jdm sti ecu or a standalone...that only requires running 4 wires.
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08-14-2010, 12:28 AM | #9 |
Scooby Guru
Member#: 178811
Join Date: Apr 2008
Chapter/Region:
MAIC
Location: MoCo
Vehicle:2011 White Corolla Over 400hp |
I don't often see the ECUs for sale. My engine's healthy, otherwise I'd look into bigport heads and 2.5 shortblock with forged pistons...I need more torque! I can only imagine what a CNC combustion chamber bigport head hybrid build would be like...
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