Dt 125r dyno

[jonne123]

How is it possible because it has atleast 23-24hp. And in youtube there is a videos of similar hp to manufacturers claims.

[Calum]

@jonne123 What! They do not make 24 horse power out the factory.

15 is what I'd expect from a fresh DTR motor.

[jonne123]

But why they have dynoed some 24hp? Thats some bullshit everyone sais that it has 24hp and it doesnt.

https://lh6.googleusercontent.com/proxy/MsEjYg2RFODGCNm4oDlndtU8E5dSHHe6D49YQ7smRqwmEFAeL9BZTYYZJk0H3MAVlcSXh59QXDoRpo2z-mmxTCJUurBvWfbZ4rXqf4oNL8hUL2VsSZoRok9-fCh1OfX8Ig

[Calum]

https://www.ultimatespecs.com/motorcycles-specs/yamaha/yamaha-dt-125-r-2002

Maximum power - Output - Horsepower 14.10 HP (10.3 kW) @ 7000 RPM

[Calum]

Tuned? I'm sure it's possible. But not stock.

[jonne123]

https://www.rrd-preparation.com/en/kit-high-engine-motor-bike-125cc-2-time/671-athena-kit-170cc-125cc-engine-derbi-gpr-tdr-yamaha-dt-2-tzr-time.html

I have giannelli exhaust but even here says stock. How does yamaha have so shitty engines because every other 2 stroke 125cc 1990-2019 makes more power.

[Calum]

@jonne123 That's not stock though is it.

That's tuned.

[Calum]

It's not shitty, it's road going.

It's designed to be commuted on daily with virtually zero maintenance.

[jonne123]

Reads original so full power? 24hp. Do they have regional differences?

[Calum]

There were a few differences depending on region. But 15 Hp is about what I'd expect to see out of a factory DTR.

A pipe will make a difference and a decent CDI.

The rest will be marginal gains.

[jonne123]

I guess i have to buy another bike but how could some dynos get 24hp from small changes and another 13hp

[Calum]

@jonne123 TUNED!

What's so hard to understand about that? They've tuned their bikes.

[jonne123]

What does tuning mean? Heres one with stock motor. Maybe pipe? https://youtu.be/bAzNrjtCfps

[Calum]

@jonne123 It means it's not what it was out the factory.

That DTR in the video is heavily modified. It doesn't even have an airbox.

[jonne123]

Shoot. What i need to do to get more power? I have the better head, giannelli exhaust, carbon reeds.

[Calum]

@jonne123 Probably about it unless you want a headache.

[jonne123]

What i need to do to get 25hp? And thats its grazy that yamaha wr 125x has higher tuning stage and more power tham my 2 stroke

[Calum]

@jonne123 How is crazy?

The DTR uses an engine designed in the 80s and wasn't changed in its entire lifetime.

The WRX is a modern four stroke engine and you're comparing it against something made 30+ years ago.

The two stroke engine hasn't been developed massively for a long time. Four strokes have come on leaps and bounds.

[jonne123]

Now im sad i shouldnt dynoed the thing

[Calum]

@jonne123 To get 25hp out of the stock DTR motor? I wouldn't even know. Port the barrel, increase the compression ratio, correct the squish band. Widen the exhaust port. Use an aftermarket ignition system. Use an underslung exhaust. bigger carb, uprate the air intake. Lighten the flywheel.