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Pray is correct. Only up to 85% of this can be prevented as the back filling of spent gasses causes some of the coking and cannot be stopped.
Meth injection would have to spray constantly to be much help as it is the cooling and cleaning of a fuel spraying on the valves that prevents this.
Venting will substantially reduce your engines life with the increased wear and the power robbing parasitic loss by the pistons pushing against that pressure is never good. Again, you will not find a Professional form of racing that "vents" Crazy for anyone to argue that leaving most of the wear and damage causing crap in the crankcase is somehow good. Venting only a small amount is pushed out.
Then as parasitic power loss is never good, why would one settle for it or the ring flutter issues that create far more crankcase blow-by issues?
Pull suction at all times on the crankcase. Learn from the Pros.
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