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Thread: sc12 info

  1. #1
    Senior Member
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    Timmy D
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    Default sc12 info

    hey guys

    just some sc12 info, please feel free to add



    a sc12 supercharger, inlet and out let pipes



    which weighs 12kg!



    Left small port. Right bidport
    an upgrade for any one using a bigport 4agze sc12 (mr2) is to change to the smallport pully (ae101)



    the splines are the same so the change is farily straight forward. it is difficult to hold the pully still and undo the main bolt. i would recomend doing this off the car. the bolts (10 mm spanner) will need to be undone 1/2 a turn each at a time as the pully is in the way so it takes about 1/2 hour to just change the pullies



    big port 123mm



    small port 118
    smaller driven pully = supercharger spinning quicker = more boost
    i remeber seeing power charts for stock motors and the small port makes a fair bit more power, i would think allot of this has to do with them running more boost
    JJ
    "my mind demands side pipes out of hear, now to command my hands to make them"

  2. #2
    Veteran Nikkojoe's Avatar
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    Default

    The boost increase wouldn't really give them that much power as sc12's are pretty useless anyway. You would get more torque at lower rpm, not really power.

    Its mainly due to bigports running 8.0:1 CR and smallports 8.9:1 CR.

    Also the + shape pulley found on bigports also includes the ae92 afm bigport. AE92 smallport got the same as ae101 obviously. I found also when changing pulleys on my ae92 afm engine that the circlip that holds the coil on is annoying to install on car...
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