Ford Focus Forum, Ford Focus ST Forum - View Single Post - 2.3 head swap (winter project)
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Old 12-04-2012, 12:14 PM   #10
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What I Drive: '06 ZX4 2.0L Dtec, '11 MK2.5 2.0L

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Could you please tell me what's the PN of the 2.3 head you have?
I think there are two PNs: 1s7g and 3s4g.
According to SBD, the 3s4g is the one with better flow. I have one 3s4g, just want to know if it's same as 2.3.
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