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Old 09-05-2010, 07:03 PM   #1
DrunkenDragon
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Default 2.5/2.0 hybrid

I did a search and didnt find anything.

is there any benefit of runnin a 2.5D block and 2.0 wrx head?
Will it even bolt up? Compression bump + nice flowing heads?
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Old 09-05-2010, 07:22 PM   #2
auslyle
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wrong section bro but usually its something people did when they blew the bottom ends in there 2.0 wrx's .5 more L of vol in= more throttle response over the 2.0L's
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Old 09-05-2010, 07:34 PM   #3
DrunkenDragon
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no i meant 2.5D block and 2.0WRX heads, and stayin NA.
No turbo.
Like the 2.5/2.2 high comp guys and still havin top end with these heads.
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Old 09-05-2010, 09:16 PM   #4
BAN SUVS
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very STi'd

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I don't think there's any real advantage to the 2.0 heads, but I didn't check for the compression change. There's also the issue of making it work properly, since the intake manifold spacing isn't the same from the 2.5 to the 2.0 among other things. Short answer is, yes you can probably make it work, but I doubt it's the best or easiest solution for whatever you're trying to do.
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Old 09-05-2010, 09:27 PM   #5
Matt Monson
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They flow worse, not better than stock Ej25d heads...
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Old 09-06-2010, 12:46 AM   #6
DrunkenDragon
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yeah i was think the same.
the car is a 1997 ej22, a 1999 EJ25D should plug right up from what i researched correct?
PLug ang play.
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