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Could someone explain the differences in the valve cover "ventilation" in these three photos?
I assume some air filter change/modification has gone on in the third photo, but can't figure out why that copper pipe is "open to the elements". Was it supposed to have a draft tube going down toward the block? Or is the valve cover (and pipe) just wrong for that style carburetor air filters?
Thanks.
Tom M.
I assume some air filter change/modification has gone on in the third photo, but can't figure out why that copper pipe is "open to the elements". Was it supposed to have a draft tube going down toward the block? Or is the valve cover (and pipe) just wrong for that style carburetor air filters?
Thanks.
Tom M.