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Thread: MFI Drive gear timing mark?

  1. 11-09-2024, 03:10 PM #1
    NorthernThrux
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    MFI Drive gear timing mark?

    I had to remove my MFI pump to deal with the actuator return spring. I know you can take the pump off in any orientation, but it has to be put back with the right timing marks.

    So I find TDC for cylinder 1, rotate 360 degrees to TDC for cylinder 4, and then a few more cm to get to the FE mark. So far so good. Turns out my MFI pulls does not have a timing mark on the pulley. There is a mark on the flange. How do I get the rotation right? I can pop the cover off the driver's side pistons, but am unsure where the timing mark should be set in reference to their positions.

    thanks
    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in Light Ivory 5sp MT
    2023 Porsche Macan GTS in Gentian Blue 7sp PDK
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  2. 11-09-2024, 04:32 PM #2
    edmayo
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    Just do what you're doing, TDC #1 then TDC#4 then 14 * to FE pulley mark, align scribe mark on pulley to hash mark on pump. (scribe mark is not on the pulley itself, it is on the flange pulley bolts to. )
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  3. 11-09-2024, 06:44 PM #3
    NorthernThrux
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    Thanks Ed. I see it now!
    Ravi
    Early 911S Registry # 2395
    1973 Porsche 911S in Light Ivory 5sp MT
    2023 Porsche Macan GTS in Gentian Blue 7sp PDK
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