Opinions Honda NSR 125 1989

[Irongamer727]

@dtr-nsr happy to hear. I didn't redline in 5th at around 120 km/h and when I changed gear I lost everything

[Calum]

What's the powervalve setting on these?

[DTR+NSR]

@calum said in Opinions Honda NSR 125 1989:

What's the powervalve setting on these?

There open at idle up to 2000rpm, then closes and starts re-opening at about 7500rpm. There's a hi and low mark on the power valve pulley you line up, but I've found like with dt your best checking up the exhaust port, to check there fully open. Some cdi and power valve controllers are restricted though.

[Irongamer727]

@dtr-nsr from what I could see through the exhaust port, the pv didn't seem to be able to be perfectly aligned with the port at all.

[Calum]

They srvo operate then?

[Irongamer727]

@calum yes of course.

[Calum]

@irongamer727 Well not of course, Early Aprilia RS 125's and the tuned ones, run pneumatic valves.

KTM EXC's Yamaha YZ's and Kawasakis KIPS run off the gearbox.

So the valve could have been actuated by any of those.

[Irongamer727]

@calum Thought you would know for sure. Anyway the pv on the Honda is shit compared to the DT. It's like two different worlds. There is really no low end power on the Honda

[Calum]

@irongamer727 I've never worked on Hondas.

[Irongamer727]

@calum it's time then

[Calum]

@irongamer727 The NSR simply is not as high as spec as the Aprilia is, it frails in comparison.

Now a Honda RS 125 I definitely would love to hand. Shame I don't have 10K lying about the place.

They run their powervalve off the gearbox I believe.