Posted by Bob on September 01, 2019 at 20:17:41 from (64.255.159.199):
In Reply to: JD 3020 posted by Trobb55 on September 01, 2019 at 11:18:27:
I'm surprised no one else mentioned this, before the era of pollution controls, every car and truck had a similar setup, hanging down from the engine to vent blowby from the crankcase into the air stream under the vehicle, if idling in traffic, you'd smell it. (Setup was called a "road draft tube".)
Then along came "PCV" (Positive Crankcase Ventilation) and the oil mist and stink was piped into the intake manifold and burned along with the fuel in the engine, the exhaust could still stink, though.
Nowadays, automotive engine tolerances are tighter to limit oil leaving the engine through the exhaust and the stink is cleaned up by the "cat".
Pardon me for digressing, but folks that have been only around modern vehicles (which would apparently apply to the O.P.) are unaware of how stinky stuff used to be!
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Today's Featured Article - Tractor Profile: Case VA Series - by Staff. V, VC, VI and VO). Althouh the Case VA looked much like the V, it shared no major components with its predecessor. Except for military units, the production of the Case VA was interrupted in July of 1942 due to World War II. It resumed again in 1944 and continued until 1953. It started up briefly later on in 1953 and continued on a very limited basis until 1956. The VA Series included the following models: VA: Fixed front wheel tread VAC:
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