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Old 08-09-2003, 10:17 PM   #1 (permalink)
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help!! will a JDM head fit a USDM block?
help!! will a JDM head fit a USDM block?

~Brian
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Old 08-09-2003, 11:42 PM   #2 (permalink)
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which engine?
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Old 08-09-2003, 11:52 PM   #3 (permalink)
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A JDM H22A head will fit a USDM H22A1 block.
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Old 08-09-2003, 11:55 PM   #4 (permalink)
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is there any differance in the 2 heads? i have a h22a1 block and i am getting a jdm h22 of a 96 lude...
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Old 08-09-2003, 11:56 PM   #5 (permalink)
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Only difference I know of is the JDM has 10.6 c/r and the usdm has 10.0 c/r.
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Old 08-10-2003, 01:17 AM   #6 (permalink)
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but is that effected in the head, will i have higher compression now, i thought compression was determined by the pistons
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Old 08-10-2003, 05:48 AM   #7 (permalink)
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The pistons set the CR. You will still have 10:1 CR with a JDM head. AFAIK the JDM head is the same as the USDM.

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