Kawi2strokes.com Forum

Hi Hal.

I have a dyno myself, a Dynojet model 150. Old type, but it is calibrated from factory. The drum has a , 4 digit unique calibration number. Don't know how accurate though.....

We are running around in Norway with our mobile dyno, and the greatest differences in hp and torque measurements comes from weather conditions.

I feel that air pressure is the factor which count the most. We had a 12 zx-14 on the dyno in foggy low weather pressure conditions in "high" altitude also. 189 rwhp. VERY impressing. Some days later we had the exacy same bike on our dyne, at sea level and there was sunny high pressure weather conditions. 201! Something is wrong we tought, and did a new run. 202. Another run: 202.

That should not be possible with a crank hp 210 incl. ram air zx-14!!!!!!!!

Anyway: The difference on same dyno, same bike 13 hp.......

EBOS has tuned several streetable H2's, and he is not considered nothing else than THE tuner! I have another friend with the 4.th EBOS -H2 in this thread, and taht bike gives 112.

Maybe he does something others don't, I really don't know. But what I DO know, is that there are many EBOS H2's around with that numbers I gave. And that does not mean it's false just because very, very few manage to do so.

The 127rwhp pictured above has also been on my dyno..............The numbers were high.

How do longer rods give better filling? There is less dwell at the bottom of the stroke with longer rods.

Yeah, Mouth's bike hauls ass with the 150 FBG motor! I was expecting it to be a dog down low but it is very streetable...
Z, while your bike makes more torque than his, you need to cut the intake skirts on your pistons and get some HP pipes, you'd have the same thing!

Less dwell?? There's more, isn't it? And that causes more transfer port.time as far as I understand.

No, longer rods will increase the dwell at the top of the stroke and decrease dwell at the bottom of the stroke. The transfer ports will be open for fewer crankshaft degrees with longer rods.