[6pack] Crankase breather strategy when Strombergs are replaced

Foster, Stan stan.foster at hp.com
Sat Jul 5 15:39:09 MDT 2008


My understanding of the 74.5 carbon canister was that it pulled vapor from the
fuel tank and the Stromberg float chambers and the valve cover and used the
carbon canister as a vapor sink.

Having recently removed the Strombergs and replaced them with 3xdcoe Webers
I'm wondering what to do with the valve cover vent. I had initially thought
that I could just plug it into the top of the carbon canister but I'm having
second thoughts and beginning to wonder if I have not fully understood the
original setup correctly as it would make more sense for fumes to get sucked
into the intake path and combusted otherwise that carbon canister would
quickly become saturated.

How did the original 74.5 system work, and for anyone that has done the 3xdcoe
conversion, what did you do for the valve cover vent ?. I imagine the
supercharger conversion begs the same question.

Stan


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