Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

bore out 2.5

Old Sep 22, 2007 | 01:07 PM
  #1  
wagonator29's Avatar
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Joined: May 2006
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From: Bay Aea
Car Info: 06 wrx wagon
bore out 2.5

I just got myself a 2.5 block and im planning to bore it out bigger and im not sure what good it would do me. What will it improve? and if it is good idea to even spend my time on it. Let me know thank!
Old Oct 3, 2007 | 09:56 PM
  #2  
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From: Westminster, CO, USA.
Car Info: '95 Impreza WRX Rally
Crawford does;
http://www.crawfordperformance.com/p...nfo.cgi?id=157

They make internals to up the stroke as well;
http://www.crawfordperformance.com/p...b_cat.cgi?id=2
Old Oct 3, 2007 | 10:38 PM
  #3  
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unless you've got lots of money to spend, i wouldnt go to all that trouble...thats just my .02
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