1. 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    TE = 4st Enduro & TC = 4st Cross

Gas for new 250 motor - Pump or Race?

Discussion in '4 Stroke' started by mxer74, Dec 13, 2009.

  1. mxer74 Husqvarna
    AA Class

    Location:
    Pawnee, IL
    Hey,
    Curious what those of you who already have the new 250 motor (TC, TE, or TXC) are running as far as gas goes? Are you running what you have run in the past or jumped up to a better fuel. I notice the compression in the new motor is 13.6:1 which is quite high therefore I didn't know if anyone has tried the standard 92/93 pump gas? In my 450 all last year, I ran Shell or BP 93 Octane fuel BUT in 2007 I ran 102 Octane Sunoco in my 250F. Just curious what everyone is doing. Thanks

    Blake
  2. HuskyDude Moderator

    Location:
    BC, Canada
    Husqvarna Motorcycle:
    13/TR650
    Other Motorcycles:
    10/EC300, 76/TY175
    Hey Blake,

    I know in the manuals of both my bikes 08/510 09/125 it states. "Premium grade unleaded fuel (R.O.N.) Research Octane Number 98 or better.

    Anything different in the TC's manual?
  3. raisrx251 Husqvarna
    AA Class

    Location:
    Virginia
    I have been running Shell or BP(Amoco really) premium in mine. I am scared to do the race fuel right now until I get a little more educated with the titanium valves/injectors etc.. I used to run MR-9 Oxygenated in my mini supermoto bike. I call that stuff the Herion of race fuel.
  4. krieg Husqvarna
    Pro Class

    Location:
    Matthews, NC
    Husqvarna Motorcycle:
    Many in the past
    Other Motorcycles:
    '12 Triumph Scrambler
    I've been running a blend of 66% pump (93 0ctane) and 33% race gas in all my bikes for years with great results.
  5. Wadman Husqvarna
    B Class

    Location:
    south carolina
    Remember octane does not make h.p. Run as low a octane you can with out getting detonation. Here again everyone like to spend as much as they can on fuel and oil and it is not needed. Ive got a street bike that dynos at 194hp at the rear tire and that is on 87 octane with no spark knock. If you do insist on running the oxygenated race fuels make sure you drain the fuel after each race or it will clog up the whole fuel system. Im not trying to be a know it all but this is knowledge ive gained from hot rodding for most of my life.
  6. john01 Husqvarna
    Pro Class

    Location:
    Powhatan VA
    2010 TC 250 93 oct.
  7. cptseawolf Husqvarna
    B Class

    Location:
    Ontario
    i just run the highest i can at whatever gas station we stop at before the trails.

    usually 91oct
  8. huskyfrk Husqvarna
    AA Class

    Location:
    los alamitos Ca
    octane

    i'd ask george what to run. they don't call him the guru for nothing....:thumbsup::thumbsup:
  9. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    I run chevron super in mine. Noticed no pinging or detonation. Runs great.

    - totally agree...