How quick should a dt be?



  • I got a yam dealer close so I will pop in and ask 🙂 is it a massive differenc for the price?



  • @DevonDtr

    As I keep saying.

    In my experience it is THE BEST bang for buck.

    The power is increased throughout the rev range. The torques are massively noticeable. The peak power not so much.

    Bare this is mind, any thing else you do to the engine will be multiplied when you run an aftermarket ECU.

    I have had barrels ported, exhausts, Carbs, different rare "super teen" engine, and the one thing that stood above the rest was the CDI



  • @calum what's a super teen engine calum?



  • @tdrgreg2 Super teen was a racing series for teenagers to enter. Due to their age and experience, the series was designed to race 125 two strokes.

    Teens would predominately race Aprilia RS125's, Honda RS125's and the Occassional Yamaha TZR 125 RR

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    The engine in that bike is a direct fit into the Yamaha DT125R.

    I fitted that into my DT.



  • Thank-you buddy! Sounds very interesting. Are you currently running the engine on the Leviathan build?



  • @tdrgreg2 No it was worse than the RE engine lol.

    It's all in that build thread.

    It's a very special engine, it was an engine cast using motori minerelli stamps, indicating that it was a genuine Italian built engine.

    But the casting is week, the cylinder is, well poor and it is in fact the SP you really want. Good luck getting one, it would be easier and cheaper to run another 125 super teen engine in the DT frame, like oh I don't know the Rotax 122 engine which can be had cheap and tuned better!

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    Can't find an example of the porting. but it's insane.

    Until you look at the rotax engine, which again was mass produced, then you realise you're paying a lot of money for not much really.



  • Maybe but exclusivity costs money 😉



  • ok people let me help you with good info u cant compare a yzf to a dt and i will tell u y yzf has same size wheels and high gears for road speed dts have 21 inch front 17 back down gearing for excel and lower gearing on front to back sprockets soo the dt top end will be about 75 standard but will get there much quicker also the yzf is a 4 stroke which is no comparision at all u want more top end use bigger front sprocket u want more excel reduce front or up back sprockets simple and afforable



  • ok i also know and forgot to add some have a servo others r locked on the exhaust valve i.e yvps so if yours is of the locked ilk it will be a slower type but will have 1 powerband range



  • @Calum said in How quick should a dt be?:

    @tdrgreg2 Super teen was a racing series for teenagers to enter. Due to their age and experience, the series was designed to race 125 two strokes.

    Teens would predominately race Aprilia RS125's, Honda RS125's and the Occassional Yamaha TZR 125 RR

    alt text

    The engine in that bike is a direct fit into the Yamaha DT125R.

    I fitted that into my DT.

    may i ask what u did with the rest of this 4dl please im fond of these and would buy whats left if u have any tyvm


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