The biggest reason for blow by is improper oil level. Your oil should be a MAX of 3/4 up the window when the engine is NOT running and sitting on a level surface. I have plumbed cans in every way you can think of, the most effective way i have found is mounting the can on the fire wall, run a line from the vent to the bottom of the can, and a return line from the side of the can to the fill port. A big feature in this case is the fact that ALOT of heat rolls out of the fill port and out the vented can. I have plumbed to the oil pan with not alot of success.
Dennis Knox
Buckeye Legends
330-3109212
I like the idea of ventng from the vent and the fill port, especially for heat dissipation reasons, but wouldn't that be illegal per the rule book? I know some tech officials are lax, and some are very thorough, but just don't want someone DQ'd for something like this.
From the rulebook:
51. OIL CATCH CANS: An oil catch can (maximum 1 quart capacity) may be used. It must be securely fastened and remain within the engine compartment. It may only be routed to by a hose from the stock crankcase breather opening
or the oil fill cap.
53. OIL CRANKCASE BREATHER: The only locations that the crankcase may have a breather is under the carburetors at the stock outlet
or in the oil fill cap. This breather may not be evacuated through the exhaust pipe (header). There may not be any additional breather holes for the crankcase. Breathers and hoses must remain within the engine compartment. Baffles used in the hoses are permitted.
