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JDM head and USDM head

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Old 03-12-2004, 12:55 PM
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Default JDM head and USDM head
Just curious to know if both the heads are the same for a H22. Plus, where do the jdm engines get their more compression from? (gasket? pistons?)
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Old 03-12-2004, 01:20 PM
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Default Re: JDM head and USDM head (Vtec96Lude)
Compression on the JDM ones are 10.6:1 as opposed to the USDM ones that are 10:1.

Raise in compression is due to the pistons.
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