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Thread: vw abf 2.0 road porting

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    vw abf 2.0 road porting

    vw abf, i always thought these heads didnt flow well given 16 valves,

    i wasnt wrong, the flow figures are at 10inch, i think they are all a bit low because the bore adaptor i used was a bit small but the before/after comparison is valid



    ABF std modified
    50 22.5 22.8
    100 42.5 42.2
    150 58.8 61.5
    200 75.1 77
    250 86.3 90.4
    300 87.5 99.5
    350 94.8 108.3
    400 103 113.1
    450 104 115.7

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    Re: vw abf 2.0 road porting

    this kind of gives me a new respect for this engine, they make 150bhp in std form, same as an xe, but the xe head flows vastly more air, so vw did a really good job on the rest of the engine to match the vauxhall motor power wise





    90% of the work to improve flow is thin the port divider

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