[dogg38]

Positive crankcase ventilation valve

1.) emission control device
2.) safety device
3.) to increase fuel efficiency
4.) all of the above

I could be wrong, 1.) recirculates unburned hydrocarbons through the induction system 2.) prevents accumulation of explosive pressure ( blow-by ) 3.) slight increase in efficiency

Carbs, fuel injection, and digital engine management, been there, done that. They reliable, safe its all we know. But hey, you heard the one, about the guy who told you a distant relative. You know, the one that heard abou the miricale vapor carb that made engine seem liked it was running on fumes. The one car compaines bought out and suppressed.

Even back in the day, we were trying to figure out a better way. And that was when gas was about 19 cents a gal. Me an my brothers were trying to come up at least dollars worth of change. That was to put 5 gal.s in the ole 62 Buick Skylark my dad handed down to the oldest. Back when, two gas stations across the street from each other reduced thier prices instead of increasing the price. By the way who came up with that idea. I'm still trying figure that one out, it doesn't seem bother people.

Until the price is somewhere near 4 bucks a gallon. Ever since the infamous 70's gas crisis. The big oil companies have been trying to get the of a gallon of gas around 5 dollars. The news media and government still haven't gotten to the truth yet. Big oil, was making record profit's then too. Oh yea, we in he Detroit had 4 car companies ( remember AMC they brought us the AMX, Javelin, Gremlin, Pacer, and the Jeep ). Just like Chrysler even they got it from somebody like Nash, i think.

Maybe its too late for the gasoline engine i don't know. We own three cars 1.) 85 Monte Carlo SS, 305 h.o. (G), 4spd auto, 3.73 rearend, 2.) 88 S10 2dr Blazer, 2.8 ltr, tbi, 4spd auto, 3.) 91 S10 Pickup, 4.3ltr, tbi, 4spd auto. All have least 200k with out major overhaul. Let's see the monte is on its third trans one original, second was factory rebuild, third a hotrodder hand me down for 75 buck's. The acquired the 88 S10 2yrs ago, for 500 dollars at local auction only above average repairs timing chain an gears, on another occasion one pushrod, valvespring, seal, an keepers. Last but not least 3.) 91 S10, 10 yr.s ago replaced crankshaft, mains, rod bearings, and timing chain.

Fuel economy may not be factory advertised when they came off the line. I due my own maintenance, and use good quality tune-up parts. Lesson learned, working for a Shell service station owner around 1981. He got, his first set of self serve pumps that year. People would probably freak ( can still say that oh, i forgot [ trip ] ). Let me see, you pull in, the attendant ask how ( many gallons before 1970 ) much in dollars after 1973 or '74. While fueling your car, he check's the tires, oil, trans, radiator, brake fluids, and cleans the windows. Oh don't forget wipe the headlight's too, all that service plus fuel for less than a dollar a gallon. Hey, sounds good don't it, why you ask, sale's man sale's!!! Think about it when was the last you purchased fuel. The guy behind the register asked you if the fluids, tires, belts, or if you might be interested in a good tune or winterizaton service.

They might old like me, but i keepum running smooth. That's half the battle, even a dirty vehicle will effect fuel economy ( drag ). I read somewhere in a car magazine years ago. Somebody tried a dimpled surface like golf ball to reduce drag and improve aerodynamics. How he was gonna sell people on it, i don't know.

But i digress, my reason for re-thinking the fuel delivery system is this:

Most of system in the modern automotive system have been improved.

1.) Starting and charging ( better batteries and digital electronics's ( reduced electrical load )

2.) Coolant and climate control ( better antifreeze, radiator's, electric fan's, when was last time you were inconvenience because of overheated car )

3.) Improved tires, wheels, brakes, and traction control

4.) Improved engine power-train management
a.) synthetic lubricant's
b.) better ignition systems ( plugs, wires, coils, and rock steady crank-triggered )
c.) lighter block's, head's, and manifold's
d.) 4, 5, 6spd automatic transmission's and trans-axle's
5.) Computer-aided design, better aerodynamics
6.) Who knows how computer's: 3,4,5,6, ...
7.) The only things left is the fuel system and the lump piloting all this technology on the highways and byways

Oh, I forgot about the DARPA and various higher learning institution with autonomous self drive vehicles project's that are up an running

So basically that only leaves the fuel delivery system lacking. And i'm pretty sure the Corvette and few other vehicles. Even as early as the late 50's, maybe even earlier. Excuse if i misquote or i mis-apply this, ( Akim's razor, i don't know, maybe you will get the gist of it)

Using the k i s s ambient concentrated vapor, delivered, regulated, and metered to the intake valve. Personally i don't there's anybody out there improving fuel droplets size in a fluid medium ( air stream ). Injector's maybe, i might even buy a Volt or a Tesla that time. For me they're good fit, since I'm primarily trained in electronics.