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>From: Steven Ayres <comwest@well.com>
>JimA: While we're on the subject, the parts in my '66 crankcase breather
>seem improvised as well. What's the correct array for earlier models?
Okay, a check of the microfilm indicates that I am wrong once again: the
blue foam pad was standard in ALL cars before 69! So your car should have
had the cup, washer, sponge, and cap. I take it your sponge is gone.
>And while I'm at it, what's the purpose of the boot on the road draft
>tube?
It's kind of a check valve. It won't let anything in, and it will only let
something out if there is pressure from the inside. Since the top of the
same tube feeds into the air cleaner, the only way there can be pressure is
if there is standing liquid in there. So it is meant to let water
(condensed from combustion byproducts) run out while recycling the vapors
into the air cleaner. Actually the first emissions control addition to our
engines. It appears they were used from the start, until eliminated by the
later drain back into the sump system.
jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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