1. After 20+ years it's time to pass the torch. If you are interested in acquiring this forum please contact support@cv-performance.com for details. Any spam will be reported and blocked.
  2. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. If you are new to Bike Talk, be sure to register for free and join the conversation.

    There's always someone around willing to help out with questions or give a friendly wave back. All Harley and metric riders are welcome.
Bike Talk Motorcycle Forum is For Sale Welcome to Bike Talk

Fron 80CI to 88CI

Discussion in 'Motorcycle Tech Talk' started by godot, Nov 7, 2004.

  1. godot

    godot New Member

    Joined:
    Jul 21, 2004
    Messages:
    47
    Likes Received:
    0
    Location:
    Vista, CA
    Is it possible to upgrade an EVO engine from 80CI to 88CI? :confused:
    godot, Nov 7, 2004
    #1
  3. hotroadking

    hotroadking Super Moderator Staff Member

    Joined:
    Jun 16, 2004
    Messages:
    13,682
    Likes Received:
    584
    Location:
    Mouseville USA
    Sure just bring your checkbook

    I believe S&S has a kit using sportster pistons that have a shorter skirt and a stroker flywheel to increase the displacement.

    Lots of labor in that job, if you can do it yourself then you save some green.

    Best bet is to look into selling your motor, getting the bucks and then buying a motor like an EL Bruto 113 or 100 or a Rev Tech. JMHO.

    You should be able to get $1500+ for a stock evo if it's not worn out from someone wanting to build a bargin chopper, and an El Bruto 113 is about $4K, so net cost is $2500 more or less depending on how well you bargin on both ends.
    hotroadking, Nov 7, 2004
    #2
  4. fatboyvtwin

    fatboyvtwin New Member

    Joined:
    Apr 17, 2004
    Messages:
    111
    Likes Received:
    0
    Location:
    Rock Springs, Wyoming
    It is possible to go from an 80ci to an 88ci but the problem will be the price. In order to do the change you will have to take the motor out of the frame and then have the lower case machined out to allow the bigger piston to be able to complete the downward stroke. The piston actually goings into the lower case, that is why it will need to be machined. And with the machining it will cost a few dollars. I agree with hotroadking when he says to just bail out on the 80ci and buy an S&S or equavalent motor. Ride Safe, David.
    Last edited: Nov 7, 2004
    fatboyvtwin, Nov 7, 2004
    #3
  5. godot

    godot New Member

    Joined:
    Jul 21, 2004
    Messages:
    47
    Likes Received:
    0
    Location:
    Vista, CA
    Thank you. I will look into your suggestions.
    godot, Nov 8, 2004
    #4

Share This Page

XenPorta © Jason Axelrod from 8WAYRUN.COM