The Stovebolt Site Forums The Shop Area Engine Shop is the myth true?

i was talking to my uncle the other day and he told me of myth that he beleive to be true. that some guy developed a way to get up to 100 miles a gallon gas milage on any vehicle. the government found out what he was doing and since then, hes never been heard of.

i didnt believe him til he pulled out the plans of how to do it that the man had posted shortly on his website before it became unaccessible. the man said it was fairly simple and any good mechanic could fabricate the system itself.

i didnt see the plans that long that my uncle had, but it was something about recycling the exahust and using it to prevaporize the gasoline in the fuel line BEFORE it went through the carbuerator, and then repeting the process over and over. making the gas last longer and more efficient.

Anyone heard of this? is my uncle loco or what? love to find out if its true or not. 2.00/gal. for gas is killing me.

Do an internet search for Pogue carbuetor.

With our governments dependence on foreign oil; and the car manufactures now having to pay if their "fleet" mileage is below the government CAFE standards, such a carburetor would be very useful. Of course, it violates the laws of Newtonian physics.

Jon.

is my uncle loco or what? either, but prolly both
start planning now for $3/gal and it won't be such a suprise when you start payin for it by the quart

Bill

Sure ,you can get an engine to deliver 100 mpg under perfectly controlled conditions, it would have severe driveability problems, be totally useless in everday use, a gutless piece of crap that wouldn't have the torque to drag a dead cat on string.

Sounds like a Hyundai.

Wasn't that carb tested near a place called Loch Ness by some big tall hairy guy from Oregon or Washington State? He had help from his blond cousin from the mountains of Tibet?

The story as I always heard it used a 70's Caddy as the test platform. Now the whole thing has been updated to include a website.

At least it was the Canadian Govt since the inventor lived in Canada....I bet those mounties keep the stolen carbs in their saddle bags as they tour the country....sort of like a ship that never reaches port.....keeping the secret of good milage only to themselves...and Horse....of course

Yep, I sell a 100-MPG carburetor! It's here on the shelf right next to the pills that make you lose weight while you sleep, while eating a diet of Pizza and beer, with chocolate sundaes for dessert! Be sure to visit our real estate department on the way out, we've got a great deal on a bridge in New York City!

Old P.T. Barnum had it right, "There's a sucker born every minute!"
Jerry

I had a couple of the 100 mpg carburators from the early 80's that I bought from a garage sale. They were all aluminum custom cast units. Very simple inside and out. I believe they work like the high preformance "Preditor" carburators you can still buy. The throttle blade was just a blade with no linkage at all hooked to it. The heart of the unit was the big vacumn diaphram that pulled the top plate open. The diaphram was hooked to ported vacumn that heald it shut. Once you open the throttle, the vacumn would drop and a spring would override the vacumn. Only adjustment was the idle speed and idle mixture.

I had it on my 318 Dodge for a week or so. It would get about 1 to 2 better mpg but the loss of power wasn't worth the trouble. Plus it was very slow to get going, then it would take off, so it was hard to drive. I had all the papers and engineering work sheets. I finally scraped them for the aluminum.

Joe

My motorcycle has four 200 mpg carburators, one for each cylinder, giving me a total of 50 mpg. :rolleyes:

I first heard that story back during gas rationing in the '70s.

Seems pretty loco to me...

But hey he\'s got a patent so it must be a good idea, huh? :o

-Boyo

a freind once told me he was going to by a gadget that was going to improve his gas mileage by 10 percent,guaranteed! i asked him if he bought ten similar gadgets if his car would run on no gas, and he punched me!

what the ???? are these people thinking? iguess it takes all kinds

There's been stories like this going around since the 1960's about someone inventing a carb that got fantastic milage and the oil companies got together and gave him a fantastic sum because a very efficient carburator would cut into their profits,but really, motorcycle carbs are really efficient. Back in the sixties, MGB and other English make cars used them and they got great gas miledge.

Truck Tinker from Talking Rock, Ga.

Motorcycle carbs work great as long as you don't need an accelerator pump or power enrichment circuit. Motorcycles don't have vacuum advance, either. They use one carburator for one or two cylinders, generally, so the pulses from the intake action are strong enough that you don't need an accelerator pump and the vacuum is not steady enough for a vacuum operated power circuit. The carbs on my bike are sidedraft Keihins with a 38mm venturi. They are slide throttles with a main jet with a needle that opens the jet more as the throttle is opened. There is also a fixed idle jet with an air bleed. The throttles are all ganged to a big lever and there is a stop screw to adjust the idle speed and a choke linkage. It all works really well. I have been considering using three 44mm Mikunis on my 261 but they are getting kind of expensive.

Actually Murdoc, a carb was designed in the thirties to net 68 mpg. I DO remember reading about that in my engineering text books. The big three or the Govt bought the guy's design and shelved it or blew it up.

Actually, what your pop was describing is similar to steam turbines using downline inefficiencies to improve stuff at the intake, so it's probably not a hoax. Guy's just applying steam plant methods to gas driven cars.

From a volume manufacturer's view point, this would be absurdly too expensive! There are sometimes cost benefits to making cars inefficient: because making them too efficient costs too darn much and would not sell.

Ain't it cool?

Cheers from Chris in NC with the stalling MOPAR

4 on the floor, On slide valve cycle carbs and SU's and Hitachi's used on cars,the lack of an accelerator pump is due to the variable ventui design.This feature keeps the air flow through the carb at a high enough velocity to keep good atomization and generally prevent leanout when the throttle is opened up fairly quickly.Many Japanese 4 cylinder cycles use a constant velocity design, the slide is lifted by vacuum like a car SU. But the slide isn't controlled by engine vacuum below the throttling device, but vacuum created by the carb venturi.The Venturi principal is what draws fuel from fuel metering circuits on all carburetors.Only the idle circuits are directly linked to engine vacuum below the throttle. Large 2 cylinder carburated sport machines like Ducatis and Guzzi, maybe BMW's have accelerator pumps on slide valve carbs.Thet have large carbs, a sudden snap of the throttle will cause a lean mixture, making the pump necessary.The short intake manifold length on bikes helps also.I'm pretty sure this is correct, But, I ve been wrong before,lol.
If you have 4 38 mm carbs on your 70's 750, you got one hell of an engine to handle those carbs,I believe the stock 750 carbs are around 26-28 MM, with 30-32's used for racing.

Yeah, maybe I got the decade wrong. I think they are 28mm. I had a 38mm on my Husqvarna 400CR.