summitboy
New Member
Pressure
My take on it is the bike crankcase pressure must be high. I notice oil in the air box. I'm sure some ends up in the engine burnt. I rev my bike like i stole it sometimes. My Ducati 998 had the same issue but way worse. I don't believe the engine is burning oil from piston ring clearance. Yamaha builds the best motors going. I have a genesis R1 type motor that is turbo'd to 300hp and it has taken a major beating for 7 seasons and the motor is like new. 2-3% leak and normal compression. Thats engineering !
My take on it is the bike crankcase pressure must be high. I notice oil in the air box. I'm sure some ends up in the engine burnt. I rev my bike like i stole it sometimes. My Ducati 998 had the same issue but way worse. I don't believe the engine is burning oil from piston ring clearance. Yamaha builds the best motors going. I have a genesis R1 type motor that is turbo'd to 300hp and it has taken a major beating for 7 seasons and the motor is like new. 2-3% leak and normal compression. Thats engineering !