My "stock" bike with 17/44 gearing would pull 175 km/h (in fact it felt like it had a tad more in it) The gearing makes about a 10 km/h difference to a 16 tooth front - so I'm not sure you have gained anything?? Sounds like you are definately a bit rich or lean on the main.
I believe if you have the bike jetted properly and exhaust/headers done you should get to 190 km/h no problems at all, and get there much quicker. I will test this once I rejet my bike...maybe a couple of weeks, but I suspect it is right.
Again for those who have not done the exhaust, your engine will run way smoother at lower rpm's. I think that 90 degree header into the other one is actually pushing some exhaust back towards the other cylinder making the engine run much rougher. My bike can pull 3rd from almost idle now and all with about 70% less vibes than before - and when jetted right it should have a little more in it.
I would keep the smaller intake duct to keep jet size down and maximise fuel efficiency given how well my bike was doing stock.
If you really want more top end - port the head - these engines really take to improved flow by all accounts from the ex500 racers out there. You would then be looking at way more power everywhere (4 stroke power is all about the head flow).
cya
|