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head differences

Discussion in 'Engine Building' started by SolPWR, Jun 15, 2004.

  1. SolPWR

    SolPWR Senior Member

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    is the head on a b20b the same as an B18b? what would happen ifg you put a b18b head on the b20b block?
     
  2. StyleTEG

    StyleTEG Senior Member

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    exact same head :)
     
  3. bambam

    bambam Member

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    Not entirely true...
    There are 2 B20 heads. There's the normal ol' P75 LS head which comes equipped on 99% of B20s and it is identical to the 94+ integra LS head. It has 81 mm combustion chambers.
    Then there is a VERY rare PR8 head that came on limited JDM B20s. It has an 84 mm combustion chamber matching the bore on the block. It also has 33 mm valves which are the same as Vtec valves....it's the only Non-vtec head to come with vtec sized valves from the factory.
    I know this for a fact because I have THAT RARE PR8 head on my B20b...came stock like that with 84 mm combustion chambers and 33 mm Vtec sized valves.
    My friend also has a JDM B20b...his came with an P75 LS head w/ 81 mm combustion chambers.
     
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