Technical > Spud Miller's Cave

Evac

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Oldschool:
Have a SBC with Enderle injection with bug (Alky). I have a evac system running from my exhaust ( see picture) . My question is will this work good enough for this set up ? I know some recommend a vacuum pump, but the dollars are a little short with getting this set up. One guy told me this would help cut down on milky oil.

THE FRENCHTOWN FLYER:
I do not think it will work as well as routing it to a collector where it would see a signal from all eight cylinders instead of two. It may have trouble keeping up with the positive pressure build-up in the crankcase. Having said that - its on the car; try it. It may work well enough to work well enough.

dreracecar:
Never run that setup with a blower motor

olddiggersrule:
I have always wondered about those evac systems even on gas carbed to the collectors? Doesn't the crankcase pressure need to have a breather on the inlet somewhere? I've seen two lines to the headers and no place for air to enter the system? Additionally why would breathing oil in front of the slicks be a good idea?

ricardo1967:

--- Quote from: olddiggersrule on May 31, 2017, 05:41:42 AM ---I have always wondered about those evac systems even on gas carbed to the collectors? Doesn't the crankcase pressure need to have a breather on the inlet somewhere? I've seen two lines to the headers and no place for air to enter the system? Additionally why would breathing oil in front of the slicks be a good idea?

--- End quote ---
'Air' enters the system through piston rings and valve guides.

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