Dave Ett wrote:
Keeping the powervalves will not rob you of a single horsepower, but it will give you bag loads of it over a much wider spread of revs, so you can get the gearing alittle bit wrong and still stand a chance.

Unless you're planning on swapping gearox cogs at every meet so you can be in the powerband at every corner?

And is if to prove the point, Mark Jordan's proddy 250 lap record holding bike;

I've removed the other trace which was a TZ350 as it was there purely to show how well Mark's bike pulls in the mid range. If he can find another 1000 revs the rest of us may as well just go home!

That is how to build a motor that wins races, making an NSR grunt like that is one hell of a task. Steve's F3 was close though James (who owns the Krazy Katt dyno) would argue his dyno read low.
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread