Senior
Posts: 606
Joined: Oct 2009
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From my point of view a hose running from the filtered breather cap on the fuel pump stand to the carb air cleaner is unnecessary, and in fact might cause a reversed air flow. A spacer under the carb, which would have to be thick enough to accommodate a 3/8" pipe could work for a vacuum source. The pan breather with a hose running up the engine with a PCV there-in would not be a good idea. Generally speaking fumes tend to rise, however, that would be within the engine assembly. Gathering and withdrawing fumes that have risen within the engine via the PCV would be much easier. A second problem would be that as the oily vapor rose in the hose, it would cool and solidify, therefore no longer a vapor. If there is a pan breather located there in/on, it would require blocking of.. It is true that many overhead valve engines of the late '60's and '70's had a hose plumbed into a valve cover which was ran to a fitting on the air cleaner, however the system had a PCV system from the other valve cover or valley cover.
Bill 36 5 win delx cpe
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