2018+ KTM Fuel Injected 2-Stroke - The 250 & 300 XC-W TPI Thread

Discussion in 'Thumpers' started by mtntrails, Mar 23, 2017.

  1. mtntrails

    mtntrails Life is Short...

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    http://www.asphaltandrubber.com/news/ktm-debuts-fuel-injection-two-stroke-motorcycles/#more-131663

    http://www.motorcycle.com/features/ktm-announces-fuel-injected-two-stroke-engine-for-2018.html

    DI two stroke technology has been baked in to snowmobile and marine outboard markets for many years with good success. Only a handful of motorcycles from small manufacturers have adopted DI or FI two stroke technology.

    I'm really looking forward to seeing the progression of these new KTMs. All of the lightness and goodness of a two stroke KTM with no pre-mixing fuel, no re-jetting for altitude and presumably clean emissions and significantly better fuel economy.

    So, could this be the beginning of a 2-stroke revolution? Sounds like the Euro models will be street legal (?) and meet strict Euro emissions standards.
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  2. Scooby1

    Scooby1 One Life Live It

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    Recon they gonna be the bomb . Been tested in all the hard enduro races last year and did very well .

    Sent from my SM-G925I using Tapatalk
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  3. cyclopathic

    cyclopathic Long timer

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    According to video above they're using TPI (Transfer Port Injection) and premixing oil prior to this. It is a glorified SFI of '80, an electronic carburetor. There's a snowball chance in hell this could pass EPA street regs, with oil burn you cannot fit catalytic converter.

    We will only get a 250cc 300cc will stay carb'ed.

    The only advantage the fuel consumption will improve, so will cold starts and altitude fueling.
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  4. Scooby1

    Scooby1 One Life Live It

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    I'll be ordering a 300 exc when they are available in Australia .
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  5. cyclopathic

    cyclopathic Long timer

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    Aprillia had DFI on 50cc scoots back almost 2 decades ago, I was hoping we will see some street legal bikes with DFI and oil separation by now. TPI is pathetic though it is a step in right direction.
    #5
  6. mtntrails

    mtntrails Life is Short...

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    Yes, but two decades ago they did not have electronics and processing technology to make it all work. A good example is the Bimota V-Due. ( https://en.wikipedia.org/wiki/Bimota_V_Due )

    I'm pretty sure that KTM has worked most of the bugs and gremlins out. This is a pretty big step that a lot of folks, including me have been waiting for.
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  7. cyclopathic

    cyclopathic Long timer

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    I think they couldn't pass Euro2 on NOx or it was too expensive. Silly, they should have hired Audi engineers.
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  8. mtntrails

    mtntrails Life is Short...

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    Now, that's funny!
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  9. Grreatdog

    Grreatdog Long timer Supporter

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    KTM doesn't care about passing EPA rules for street legal vehicles. All they want to do is meet Euro4 in Europe and CARB Green Sticker rules here to keep selling offroad race bikes.

    So all they are trying to do here is clean up their best selling offroad weapons enough to keep selling them with engine architecture as close to what they have now as possible.

    These are already very highly evolved engines. They don't want to dick around with that architecture anymore than necessary because riders like them so much as they are now.
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  10. RideFreak

    RideFreak Torque Junky

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    +1
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  11. cyclopathic

    cyclopathic Long timer

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    Yeah it is a quick fix to pass emissions.
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  12. Traveller128

    Traveller128 Long timer

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    Interestingly, Sherco says they have fuel injection ready to go and tested, but won't use it at this point as their carbed bikes pass euro 4 currently.
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  13. craigr652

    craigr652 Been here awhile

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    "the two-strokes return better fuel efficiency than the current race-winning 350 EXC-F four-stroke"
    That could be make it a great dualsport bike for those in plate friendly states
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  14. Eldon

    Eldon 90% Bike 10% Rider

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    If FI = better fuel economy at little to no cost of engine longevity, I say bring it on.

    Was really hoping to hold out for a FI 2-stoke but just couldn't do the XR400 thing any longer.
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  15. Grreatdog

    Grreatdog Long timer Supporter

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    The most aggravating thing about using my plated 200 as a dual sport (aside from coming on the pipe right at 55mph :lol3) was having to carry oil.

    So, yes, better fuel economy and not mixing oil will make them better dual sports for those of us not living under VIN restrictions.
    #15
  16. mtntrails

    mtntrails Life is Short...

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    There's another article in the latest Cycle News. Nothing new other than KTM announcing the international press launch being held on May 15.
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  17. cyclopathic

    cyclopathic Long timer

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    How much more are they charging?
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  18. WIsixfitty

    WIsixfitty rock and roll the bones

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    In 1984 Yamaha had a catalyst on the RZ350.

    In the vid the guys talks about possible oil pump problems. In my 40 years of riding and working on snowmobiles I have never had one oil pump issue or problem.
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  19. fastdadio

    fastdadio Still gettin faster

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    Those were the old gear driven pumps. Bullit proof. My old 78 TS250 is still going strong. Now, throw a circuit board in the mix and see what happens.
    :beer
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  20. WIsixfitty

    WIsixfitty rock and roll the bones

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    Many of the new sleds are now running electric pumps along with DFI etc etc.
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