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.

1990 heritage

Discussion in 'Motorcycle Tech Talk' started by Bob Kratz, Nov 12, 2021.

  1. Bob Kratz

    Bob Kratz New Member

    Nov 12, 2021
    Likes Received:
    Hello forums members, I recently installed an Andrews EV27 cam in a 1990 Heritage with a stock CV carb and exhaust system. The directions for the cam said I may need to change jet sizes, the current jetting in carb is 175/45, the cam directions say I may have to go to a 195/48-50, I also read on a forum about installing a sporty needle to,Anybody have any thoughts on this as I have not installed the carb on bike yet, would like to change jets while the carb is on my bench instead of standing on my head ! Lol, thanks for any thoughts on this
  2. carlos garcia

    carlos garcia New Member

    Sep 1, 2021
    Likes Received:
    Beaumont, Ca
    My suggestion would be to install it with the 175/45 and see how it runs. If you are inclined to change them, then and only then, would I first change the pilot. The pilot only affects the idle and the first 1/3 of the throttle. If it still not behaving like you expect it to at higher speeds, then change the main. Go one step higher at a time, and one thing at a time. I recently received my CV 40 mm carb, which came with a 50/200. I changed to a 48/190, and there was no discernible difference. I have now returned to the 50/200, and still, there is no discernible difference. I did go with a CVP Velocity needle. I may scale it back later, but for now I will leave it as is. If your bike has one of the older model carbs which did not have an accelerator pump and has not been upgraded, it may not accept the Sporty needle. Some on this forum would advise against placing any washers on the needle. I would leave changing the needle for last, and leave it as a last resort. My suggestion would be to try the CVP Velocity needle first.
    Last edited: Nov 23, 2021

Share This Page