CC of SE pistons

Discussion in 'Harley Davidson Extreme Modification' started by Fisherking, Jun 15, 2016.

  1. Fisherking

    Fisherking Active Member

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    Hi i have a chance to buy a pair off SE 10:1 comp pistons . stand bore 88.
    I was wondering what the cc is of the dome on them .

    Thanks F.K.
     
  2. dolt

    dolt Senior Member Contributor

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    Need a PN. I am not aware of an SE 10:1 piston for the standard 3.750" bore. 10.25 and 10.5 are available but for the 95" 3.875" bore.
     
  3. Jack Klarich

    Jack Klarich Expert Member

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  4. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    Unless there's a new piston on the market dolt is correct. The 88 needs to be bored to a 95 for the 10:1 pistons to work.
     
  5. Jack Klarich

    Jack Klarich Expert Member

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  6. Fisherking

    Fisherking Active Member

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    These are the numbers on the piston. 22137-99 030 and on another part of the piston is 3588 or 2588, and HH07.

    Ya i didnt think they had 10:1 pistons in SE.

    Thanks F.K.
     
  7. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    There is a 10:1 SE piston but I don't believe it's for the standard bore 88ci. I believe you'll have to bore it to a 95.
     
  8. dolt

    dolt Senior Member Contributor

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    PN 22137-99 is obsolete and has been replaced with PN 22137-08B. The later PN is a 10.5:1 piston for use with MVA or 110+ heads which have a 95-98cc chamber. Additionally, the later PN piston cannot be used with a 4" stroke crank as the pin height is set for the 4.375" crank. I am not sure about the original -99 PN as to whether or not it can be used with a 4" crank; still looking for that information. I would guess that dome volume is somewhere between 11-13cc.

    So, before using those pistons you will need to bore to 95" and either cut the dome down or replace the OEM heads with a set of 110+ or MVA heads, otherwise compression will be unmanageable.
     
  9. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

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    You may want to check into the 95 big bore kit instead of a piecemeal approach.
    That kit with some decent head work should give noticeable seat of the pants power. JMHO.
     
  10. dolt

    dolt Senior Member Contributor

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    Or bore to 98" and use the appropriate Wiseco (3.937" bore) from the table in the link Jack previously posted. 3TQ/HP, at least, for free........;)
     
    Jack Klarich likes this.