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  1. #1
    Member
    Join Date
    Aug 2023
    Location
    Hammond Louisiana
    Posts
    13

    97 200 EFI Rebuild

    currently rebuilding my Mercury I see options for top and bottom guided pistons as for as I know the connecting rods are stock and im reusing them. My question is what is the difference of top vs Bottom guided pistons and would top guided pistons work while using the stock rods. Serial Number # is 0G530745

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    14,877
    #2
    your came with top guided rods , bottom guided uses the crank end to align rod , top uses piston wrist pin
    .................................................. ...the scariest thing in life is the unknown ...................................