High Elevation Beta Jetting

Discussion in 'Non-Husqvarna Motorcycles' started by water racer, Jul 24, 2014.

  1. water racer Husqvarna
    Pro Class

    Location:
    http://www.knoxenduro.com Knoxville, Tennessee
    Husqvarna Motorcycle:
    2013 Beta 250RR
    Other Motorcycles:
    2009 Husqvarna WR125 1997 Fantic
    I have a customer that is taking his 2010 Beta 520 to Colorado to ride in 9-12,000'
    Any suggestions for jetting?

    Thanks, GP
    LandofMotards likes this.
  2. glangston Husqvarna
    Pro Class

    Location:
    Gardnerville, NV and Mammoth Lakes, CA
    Husqvarna Motorcycle:
    2012 Husqvarna TE 310
    Other Motorcycles:
    2012 BETA 350 RS
    I took my Beta 2012 350 to Mammoth and rode up to 10,000 ft with no jetting change. Idles a little lower.

    Started good, hot and cold.

    No change in the flex jet either. I rotated it some each way and didn't get anything worth the change.

    Might help to turn idle up a bit
  3. Up-tite Husqvarna
    Pro Class

    Had a customer last year who went to Co.
    Only thing we did was to put a flex Jet and a carb vent filter on it so could lean it on the pilot above 12,000 he said it ran well up and over 14,000 and no problems.
    Just don't run Hi octane or race gas run the cheap regular.
    Later George
  4. LandofMotards Moderator

    Location:
    Colorado
    Husqvarna Motorcycle:
    2014 TC250
    Why run regular? I've heard you can get away with it because of the elevation but never heard you should
  5. Up-tite Husqvarna
    Pro Class

    Regular lights off easier, not enough oxygen so at higher altitude your motor has lower comp.
    On a Dyno you will see higher hp #'s because it burns with a bang. But is hard on a mtr.
    At altitude you have 1/2 the motor that you do at sea level.
    Put a Turbo or Super charger on it then it's different story.
    Later George
  6. water racer Husqvarna
    Pro Class

    Location:
    http://www.knoxenduro.com Knoxville, Tennessee
    Husqvarna Motorcycle:
    2013 Beta 250RR
    Other Motorcycles:
    2009 Husqvarna WR125 1997 Fantic
    Thanks for the info!
    Beta USA tech guy says one step leaner on the main and pilot is rule of thumb, but sounds like several have had success with no changes which is good.