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p75 vs pr4 head

Discussion in 'General Tech and Maintenance' started by asmallsol, Jul 19, 2003.

  1. asmallsol

    asmallsol Super Moderator

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    I know that both are b18b heads but what is the diffrence. Is it the OBD. Which one is obd1 and which one is obd2. Also, Are the bare head's interchangeable.
     
  2. pills_PMD

    pills_PMD Super Moderator

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    the bare heads are interchangeable .. it's the electronics that you bolt to them that make them different OBD
     
  3. asmallsol

    asmallsol Super Moderator

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    alright, that is what I thought.
     
  4. saturn_boy96

    saturn_boy96 88 C1V1C 53D4N DR1V3R

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    correction, not all p75 heads are from b18's, some came from b20's like the ones found in the crv and others came from jdm b20's out of honda orthia's. i got all this info off honda tech so you can check there extensive b20 thread. but basically it states that the b20 heads from honda orthias have larger intake valves but are still stamped p75.

    but as far as i can tell they have the same cam as a b18b and they are both stamped p75.
     
  5. h82w8

    h82w8 Senior Member

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    not trying to hijack this thread but,orthia :ph34r: ? I'm assuming jdm. is there a page that lists all jdm hondas and their specs?
     
  6. saturn_boy96

    saturn_boy96 88 C1V1C 53D4N DR1V3R

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    check out honda -tech. they have tons of info.
     
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