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M20 Valve Size Conversion

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    M20 Valve Size Conversion

    ok, 85 325e M20.

    Can the original 325e cylinder head be machined to accept the larger 325i valves?

    85' 325e Int. 40mm Exh. 34mm
    12/86 325e 87-91 325i Int. 42mm Exh. 36mm

    I can't imagine it would be too difficult to open up the valve seats +2mm.

    Thats about $130 in parts for the valves. I don't know about machining costs, another $100?

    How much is a used 325i cyl. head?

    Robert
    85' 325e

    #2
    uhh just put on the 325i cylinder head...and then whatever else you have to do to make a 2.7...boring out the seats and such on the E cylinder head is a severe waste of money.

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