Ford Focus Forum, Ford Focus ST Forum - View Single Post - 2.0l to 2.3l head swap
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Old 03-13-2013, 11:21 PM   #31
1turbofocus
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I dont agree , I have had both heads on a flow bench and the 2.0 is a restricted head on the 2.0 and its done this way for many reasons one to make more low end tq and another for emmisions
I am a firm beleiver that adding the 2.3 head AND intake manifold or the cosi knock off , surfacing the 2.3 head for better compression would be a great addition to the 2.3 , adding cams , header and tune in my opinion sense you have the head off would be a very good idea

Added flow and slightly higher compression is going to gain some nice midrange and upper end with out loosing much if any lower end

In most cases larger ports do not mean more HP or TQ , in my opinion this is not one of those cases

Tom
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