Curious when the current & common PCV system was introduced? PCV valve etc. Is this system used world-wide? or mostly only for USA-destined vehicles? I don’t recall seeing a post here from poster outside the USA about this topic.

Go to Wikipedia and read the article “crankcase ventilation system”.

About the mid 1960s. Crankcase gasses used to be dumped overboard with a road draft tube. Made a nasty black stripe on the roadway. That was in Europe as well. They started redirecting gasses about the same time.

My 1965 Oldsmobile had a Positive Crankcase Ventilation valve. My 1964 Oldsmobile had a Crankcase Vent valve. My 1961 Cadillac had an open Road Draft tube that just expelled the blowby out into the atmosphere.

Deja vu [image] Oil Catch Can Benefits Debated - Why? General Discussion That was called a “road draft tube”. They would leave an oily stain down the middle of road lanes. [image] [image] Driving without pcv valve General Discussion What …

My father’s '63 Plymouth had a PCV valve, as did all of the other cars sold in The US beginning with the 1963 model year. 1963 was the year that they were mandated. I recall reading an article in 1962 (in either Popular Science or Popular Mechanics) speculating that PCV valves would slightly impr…

Chrysler Corp. Introduced it in 1963. Don’t know about GM or Ford.

[image] Mustangman: Made a nasty black stripe on the roadway. Must be a lot of cars leaking oil noting black smudge on roads after a dip or bump.

I’m too lazy to look it up but seems to me my 74 olds was the first one for me. Standard tune up was plugs, points, pc , gas filter, air filter, and that canister filter.

1962 Chrysler 300H; PCV valve and alternator. [image]

So my 68 dart must have had one too.

PCV history?

General Discussion

circuitsmith December 7, 2022, 12:10am 5

Deja vu

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PCV history?

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