Home Forums General Karting Discussion 2-stroke EFI: is it in the pipeline for karting?

This topic contains 12 replies, has 5 voices, and was last updated by  Matt Martin 1 month, 2 weeks ago.

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  • #87069

    Spencer Uzri
    Participant

    KTM & Husqvarna have overcome the technical hurdles, & are releasing 2-stroke EFI engine off road bikes this year.  A primary motivation for this evolution is that the engines must meet impending Euro 5 emissions regs.  Again, these models are marketed for off road use.

    So, if Euro emissions laws apply to karting as well, does that mean that EFI is eventually coming?  I’ve heard that TM has a prototype in the lab, & there was a Modena EFI prototype displayed back in 2014, but it never came to market.

    #87089

    William Martin
    Participant

    Don’t know, you can do it now if you want to spend the money. See: <http://www.ecotrons.com/products/2_stroke_small_engine_fuel_injection_kit/&gt;

    Of course, unless it’s available to all as a bolt on kit, it’ll never see approval from any sanctioning body…

    This is not a “clean” EFI either, doesn’t get rid of the intake/exhaust cross flow issue.

    -bill

    #87212

    Spencer Uzri
    Participant

    I’m aware of that kit, but it doesn’t meet the Euro4 mandate, which is the driving point of my question.  If emissions mandates will be applied to off (public) road vehicles, of which karts are a subset, then are true 2-stroke EFI (ie. case & transfer port injectors) engines inevitably in the future of karting?

    #87274

    William Martin
    Participant

    Hmm, I sure hope politicians/regulators don’t start considering karts as “off-road vehicles”, as opposed to pure racing vehicles. Please don’t encourage that line of thought! 🙂 It could be very dangerous to the future of karting.

    -bill

    #87324

    Matt Martin
    Participant

    I think being afraid of change to modern solutions which are well-proven, and well-documented pose a threat to the future of most things – karting very much included.

     

    Think about it, no more carbs with 3 jets, various needles, and knobs.  No more carb rebuilds.  That sounds wonderful!  More driving and less cost messing about and having to have $300 in carb-tuning equipment to be competitive.

    #87347

    William Martin
    Participant

    Not about being afraid of change, just not wanting some bureaucrat dictating the terms. I would personally love to see a good fuel injection package for karts, but don’t think I want it designed by a lawyer. Cost IS a factor here, mass market emissions specs could well kill the whole thing.

    -bill

     

    #87476

    Matt Martin
    Participant

    Grassroots motorsports have generally been exempt from emissions regulations, i see no reason why that wouldn’t continue.

     

    However, in the unfortunate circumstance that regulations get applied to karting, all karts of X or Y class would be bound by the same regulations, and I still see EFI as the way forward.

     

    US karting tends to follow euro karting to a large extent, and I can see that trend continuing.

    • This reply was modified 1 month, 3 weeks ago by  Matt Martin.
    #87479

    Glenn L Riggs
    Participant

    You think you pay alot for carb work wait till you have to have someone program you ecu. Mapping would have to be sealed an would be hard to enforce. To get people involved in the sport we have to keep costs down. There are all sorts of things that could update our karts but isn`t needed. Not a fan of the L 206 but is going in the right direction imagine if you had to pay for F I? Just my thought

    #87486

    William Martin
    Participant

    Why would mapping have to be sealed? Is your carb sealed now? Would that be a good thing?

    #87518

    Bryan Williams
    Participant

    To hit on what Glen said, I agree tunes would have to have some sort of standard or efi tuneres and their costs will be crazy. Also do you limit the size of the injectors. I like the idea of EFI motors but opening up a huge can of worms

    #87536

    Matt Martin
    Participant

    limit fuel flow (via a spec pump).  CIK homologates everything else, i’m not sure why they wouldn’t do the same with the all of the EFI components – ECU, injector, and intake dimensions.

     

     

    Also, people have learned to tune carbs, why wouldn’t the regular person learn to adjust injector duty cycle (assuming ignitions remain as they are)?

    #87537

    Spencer Uzri
    Participant

    Not about being afraid of change, just not wanting some bureaucrat dictating the terms. I would personally love to see a good fuel injection package for karts, but don’t think I want it designed by a lawyer. Cost IS a factor here, mass market emissions specs could well kill the whole thing. -bill

    Bureaucrats are already dictating.  That’s why KTM & Husqvarna have applied EFI to their 2-strokes.  Let’s be frank about this: there is general push against IC engines, with 2-strokes being the red-headed half sibling in the family.  I think this could be a trend, if for no other reason than Europe is the hub of karting, & Europe loves to regulate.

    Of course, you do know that by law, IC engine cars will be banned starting in 2040 in the UK, right?  Do you really expect such a sweeping change won’t have a wider, “inadvertent” ripple effect?  If the storage density limitation of batteries can be resolved, then this will be a nonissue, & ekarting will take on a whole new meaning.

    #87547

    Matt Martin
    Participant

    If the storage density limitation of batteries can be resolved, then this will be a nonissue, & ekarting will take on a whole new meaning.

     

    Thrilled for the prospect of this.

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