Extreme Fuel Economy And The Classic Car
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Published 2021-12-09
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All Comments (21)
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Some guy has a YouTube video how he made a V8 get 45 mpg using a lawn mower carb. I don't think he was being totally honest in the video. He was driving the car, but it didn't seem to have any power/acceleration. Like Tony said the carb is just the metering device. Although from the comments a lot of people believed it.
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He knows how to make a 100mpg carb, he just cannot tell us because he knows that they'll disappear him. So he makes this video. Smart man.
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To get maximum efficiency from any engine optimum fuel to air mixture with completely vaporized and burned fuel are necessary, I modified a 440 mopar in a motorhome that was getting 5mpg on gasoline to propane. I increased the compression to 12:1, stainless valves, special cam and maxed out the timing, not only did it increase the hp but now I do 8+ mpg, cleaner exhaust and less than half the price of gas here in Canada.
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My great-uncle used a 1953 carburetor that was sitting in his office for ten years ( a customer wanted it rebuilt but never picked it back up), installed it in a 1980s Plymouth Reliant K-car, tested numerous times at FIFTY-FOUR MPG. (At 60 mph highway speeds) and almost 50 mpg on back roads. It was pretty gutless, but still!
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So, I was enthralled with this idea back in the 70’s. I had a Chevy Malibu with a 194-6. I acquired a Rochester 1-bbl from a stationary engine. I had accumulated a stash of main jets and started leaning it out a bit at a time. The short story is that it couldn’t get out of its own way… and… I burned 4 exhaust valves. All with no improvement in mpg. To make power, you need to burn fuel!
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I had a 100 mpg carburetor. It was on a 50cc four speed moped(like what they drive in India). Topped out at 43 mph. It was so much fun
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The story was the guy that invented the 100 mpg carburetor for his 70 Coupe DeVille was either bought off or rubbed out by the evil petroleum industry. Anyone remember cow magnets for your fuel line to increase mileage? Don't forget about the spacer you could mount under the carburetor with swirl inducing projections, or a simple piece of screen wire across the bore.
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I am 76 years old, and these tales have been around most of my life. People said tires should last 100,000 miles, and engines 1,000,000 miles. I simply asked how long would they last wrapped around a rim.
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I read an article about a guy that designed a carb for a V8 that got 57 mpg. he was a retired GM engineer and I guess they had a court ase against him because he designed it while working for GM. Long story short, they won.
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Uncle Tony be careful man you know what they did to that guy.
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The description of a carb as "a mechanical computer" makes the whole system's operation blindingly clear! I always appreciate your knowledge and ability to educate, but this video might just be the best one yet. Thanks, Uncle Tony.
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I have been in love with the automobile for 84 years, And I have learned so much more just from experiencing your programs, Thank You So Much! John from Toronto Canada!
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A choke is more fuel efficient than injection on a cold start because the choke doesn't add more fuel, it just restricts the air. With injection, the air flow stays the same, the coolant sensor tells the computer to open the injectors to give it more fuel. A bad sensor can lie to the computer, telling it that it's still cold when the engine has been running for hours. The computer has no eyes. It can only go by the info from the coolant sensor and deliver the fuel for a cold start all the time.
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Good Lord, the Smokey vapor motor is stirring the memories. I have forgotten so many things, this was nice.
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Tony you've done it, taken a subject I couldn't care less about and made in interesting. This is a good one.
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Thanks for the description of Smokey's engine, I remember reading about it years ago and wondered how he did it. If I recall right, he used a Buick V-6 and disabled three cylinders. He had two turbo's on it, and was getting something like 60mpg. The article didn't go into detail how the system worked or why the need for the turbos.
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Charles Nelson Pogue of Canada. 200 mpg vapor carburetor. Don Garlits has the test carburetor and it achieved 198 miles per gallon on a flathead V8 Ford 1936.
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Hey Uncle Tony! I've got a 70 Roadrunner 440 6pk, looks like brand new, I always park in the econo spot in parking lots! No one has ever said a word! But I drive it only 500 to 1000 mi a year, very economical at 7 mpg! Lol!! Peace🤙🤙
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More mpg is in your foot. Driving habits and knowing your engines power producing characteristics etc. My big block Chevy pickup gets the best mpg of any of my vehicles including my wife’s 4 cyl Hyundai. The reason is the raw torque it makes at a low rpm and barely any throttle. I can drive around all day at 1/8 throttle or less, never going over 2000rpm and it just sips the fuel. It seems like it will coast forever as well on flat open road.
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There was a carb produced decades ago called the Fish or Brownie carb . 1 barrel, 2 or 3 moving parts used on 4-8 cylinder engines. gutless sipper but did give 40-50 mpg if you were not a heavy footed or in a hurry.
