NASCAR ENGINE DRY SUMPs and CRANKCASE Vents

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#12 (permalink)

05-15-2011, 08:35 PM

spookypt

CC Member

Join Date: Feb 2006

Cobra Make, Engine:

Posts: 2,752

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Olddog, that is true.... Would I be correct in saying then...

"in NASCAR today, engines run with around 20 inches of mercury vacuum in the crankcase. Dry sump pumps have their scavenge sections designed to create vacuum. A check valve is added to suck air into the crankcase at 12 inches of mercury to prevent excess vacuum damaging gaskets and help piston seal etc"

Thoughts?

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