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Numbers On 225 Crankcase Surface

Discussion in 'Jeepster Commando and Commando Tech' started by Ragtopday, Sep 30, 2020.

  1. Ragtopday

    Ragtopday New Member

    While scraping the old oil pan gasket from the block on my 225, I noticed numbers stamped on the machined face of the block in line with each cylinder. For cylinders 1-6, the numbers are 10, 7, 6, 5, 6 and 5. I’m guessing the numbers may relate to The weight of some part of the rod/piston assembly. Just curious. Does anyone know what the numbers represent?
     
    Ragtopday, Sep 30, 2020
    #1
  2. Geo

    Geo New Member

    No clue on the 225, but Chrysler stamped letters on the LA engine pan rail for workers to use the correct piston for each hole.
    On big blocks, there were large, kind of sloppy painted letters on the side of the block.
    I'd bet it was something similar on the 225.
     
    Geo, Sep 30, 2020
    #2
  3. Keys5a

    Keys5a Sponsor

    I don't know what those numbers are for, but I expect they are size codes for fitting pistons (sizing to the bore) on the assembly line.
    -Donny
     
    Keys5a, Oct 6, 2020
    #3