2mm head gasket?

Discussion in 'Technical' started by Z32 TT, Jul 31, 2012.

  1. Z32 TT

    Z32 TT Active Member

    anyone running a 2mm head gasket? wondering just roughly how much it would lower comrpession by? stock heads not milled blah blah. just a rough figure.
     
    Z32 TT, Jul 31, 2012
    #1
  2. ezzupturbo

    ezzupturbo JDMAutomotive

    ezzupturbo, Jul 31, 2012
    #2
  3. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    agree 100%
     
    BLACK BEAST, Jul 31, 2012
    #3
  4. SRB-2NV

    SRB-2NV #TEAMROB

    Why do you want to drop the compression anyway?
     
    SRB-2NV, Jul 31, 2012
    #4
  5. MagicMike

    MagicMike Moderator Staff Member

    Mo boost
     
    MagicMike, Jul 31, 2012
    #5
  6. ezzupturbo

    ezzupturbo JDMAutomotive

    well at a min hes going to be running 20psi lol
     
    ezzupturbo, Jul 31, 2012
    #6
  7. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    higher boost (25+)usually means better fuel (E85)

    better fuel means you dont need to lower comp.

    IMO lowering comp is old school.
     
    BLACK BEAST, Jul 31, 2012
    #7
  8. mikec(nz)

    mikec(nz) NZ member

    According to Tomei's Spec Sheet

    • a 89mm 2mm Gasket will drop compression to 8.1 (approx) with a 87mm piston

    • a 90.5mm 2mm Gasket will drop compression to 8.0 (approx) with a 87mm piston to 7.9 with a 90mm piston
    a 1.2mm will keep it around stock
     
    mikec(nz), Jul 31, 2012
    #8

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