I recently picked up a 15 450XC-F in supermoto trim.
Bike has 44 hours on it, 10 hours on the big bore. It was a very nicely set up bike, lots of money in parts on it (Excel rims, Talon hubs, Berringer 6pot, FMF full Ti exhaust, Hinson slipper, etc) and very clean, with maintenance records, so I believe it was taken care of fairly well.
With high RPM I'm ending up with enough oil blown into the airbox that it'll leak down the subframe and then onto the frame.
I'm trying to figure out why.
Option 1 is that it's overfilled: when I checked the oil, I did so on a stand (K&L MC475, fairly large and flat). The stand is level, the frame isn't, so it might be too high of a level (as the bike leans forward and the sight glass is near the back). Even on it's wheels, it's leaning forward a little vs stock due to the supermoto conversion.
Option 2 is that the big bore simply moves enough air around in the crankcase that it blows some oil out the breather.
Option 3 is that there's something wrong, and I ought to tear down the top end and inspect.
Thoughts?
Bike has 44 hours on it, 10 hours on the big bore. It was a very nicely set up bike, lots of money in parts on it (Excel rims, Talon hubs, Berringer 6pot, FMF full Ti exhaust, Hinson slipper, etc) and very clean, with maintenance records, so I believe it was taken care of fairly well.
With high RPM I'm ending up with enough oil blown into the airbox that it'll leak down the subframe and then onto the frame.
I'm trying to figure out why.
Option 1 is that it's overfilled: when I checked the oil, I did so on a stand (K&L MC475, fairly large and flat). The stand is level, the frame isn't, so it might be too high of a level (as the bike leans forward and the sight glass is near the back). Even on it's wheels, it's leaning forward a little vs stock due to the supermoto conversion.
Option 2 is that the big bore simply moves enough air around in the crankcase that it blows some oil out the breather.
Option 3 is that there's something wrong, and I ought to tear down the top end and inspect.
Thoughts?