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Butler Ring Filer, Manual

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  • BPI-PFM66785
  • BPI-PFM66785
    Steel Construction
    Includes Coated Grinding Stone
    Mounting Bracket
    Handle

    Description

    The process begins with inserting the ring into the bore, and making sure it is square using a squaring tool to align it properly. A feeler gauge inserted into the ring gap will show you the existing dimension, and from there you can make your adjustments.

    Butler recommends .016-.018" ring gap for street engines

    Grid ring and recheck often ensuring you do not take off too much material