The 101 Association, Inc.
For the preservation and enjoyment of 1928 to 1931 Indian Scout Motocycles
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Engine Identification

  • 23 Jun 2017 12:48 AM
    Message # 4913726

    Can someone tell me what the "A" at the end of DGP2783A means?


  • 23 Jun 2017 2:07 AM
    Reply # 4913773 on 4913726

    "A" means aluminium pistons. The crankshaft was balanced for the lighter aluminium pistons compared with the standard cast iron pistons, and got the A stamped to distinguish the difference when getting replacement parts. It started with engine No. CGP 445 A, and the latest I have records on is EGP 4331 A. Only a few engines were equipped like that but the reason why is a bit in the dark, maybe supply problems, factory special tuned or just custom ordered?

    Last modified: 23 Jun 2017 2:12 AM | Carl-Erik Renquist
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