Engine size

  • Rams
    Rams
    8 years ago

    Just bought my first Harley and I'm wanting to know if it's a 96 or 103ci. It's a 2011 FatBob. Air cleaner says 103 but all of the searches I have done say it's a 96ci. Is there anything obvious external on the engine that identifies the size?

     

  • Daggs
    Daggs
    8 years ago
    Pretty sure 2011's were still at 96
  • chriso
    chriso
    8 years ago
    id say has the 103 kit in it
  • fatbat
    fatbat
    8 years ago
    Seller should have had receipts if he went to trouble of fitting 103. Or shop that did it should have records. Otherwise not easy to tell either way. Hope it's not a dishonest seller.

    Factory 103 engines have acr in the heads whereas 96 engines do not. If the 103 top end is put in by harley as a kit, do they install acr into the 96 heads?
  • Rams
    Rams
    8 years ago

    Fatbat, what is the acr. Is that inside or outside of the heads? Seller didn't know a lot about the bike. He only owned it for 12 months and said he hadn't changed anything in his ownership. I think the air cleaner cover might have been replaced with a 103 cover.

     

     

  • FLHuTChU
    FLHuTChU
    8 years ago

    Automatic Compression Release. A little solenoid valve in the top of each head to release the pressure in the combustion chamber until the engine fires up.

    This picture shows the ACR's wires protruding from the middle cavity of the heads so hard to see when covered by the rocker boxes and the tank.

     


  • Rams
    Rams
    8 years ago

    Thanks for your replies. I suppose at the end of the day it doesn't really matter. Love my new bike be it a 96 or 103ci. 

  • FLHuTChU
    FLHuTChU
    8 years ago
    Also if your vin has a M as the 7th digit, this means a 1690cc, 103 cube motor. hope this helps.
  • Rams
    Rams
    8 years ago

    Thanks. That nailed it. I don't have an M in my vin at all. Unless it's had a 103ci kit it's a 96ci. 

  • Dutchy Hoogen
    Dutchy Hoogen
    8 years ago

    Fuck all difference between a stock 96 and a stock 103 anyway.  

  • Krash Kinkade
    Krash Kinkade
    8 years ago

    6 cubic Inch = 100cc can do capacity check pull plug close valves on one cyl hook up volume gauge turn motor, multiply volume x2