Recent content by marksport

  1. M

    Opcon Autorotor 422?

    The 422 is a 2.2L unit, whereas the M112 is a 1.84L. I spoke to 928Specialist, a company that makes the supercharger kit for the Porsche 928, and they use the 1.7 and 2.0 for their kits. The 1.7L kit generates 456WHP at 6.9psi on the 928 5.0L V8 engines.
  2. M

    Two-sided serpentine belt?

    You don't happen to be using a Procharger, are you?
  3. M

    Whipple W200AX?

    I don't think you want to be running that unit, the W200AX is a huge blower compared to the Eaton M112 or the M90. If you are replacing the M112 with the W200AX and using the same drive ratio, your boost will jump to just under 23psi. The W200AX flows about 120% more than the M112.
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