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  1. #1

    56 mm or 58 mm Throttle body?

    i want to do mine but how much to bore it out? 56 OR 58MM?

    i'm planning to put vortech s/c impeller this weekend , hope it will run fine with bored TB and s/c impeller


    my present mods:
    -reflashed ecu(racing 8400rpm rev cutting)
    -158 degree rr thermo
    -rr s/c clutch
    -solas 14/19 (little modified shapen blade)
    -Riva power filter but extend longer to evade from heat fade,put the filter near the stock air deliver)
    -ngk dcpr9eix spark plug
    -jerry's filled ride plate
    -intake grate matched with rideplate
    -custom sponson but based on R&D (deeper)
    -ride plate down 1.5 mm for better turn in close course
    -just replaced a new wear-ring

  2. #2
    fabrication guru rapidacceleration's Avatar
    Join Date
    May 2005
    Lake Travis austin, TX
    the 56mm seam to work well, ive noticed more acceleration with mine.

    sorry but im not doing tb's anymore.
    but there is a few others out there now doing them.

  3. #3
    hope they could it for me with no issues

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