I'm sure something is missing but this isn't a simple bolt on kit. I wonder if this helped with gas mileage or speed? It looks like it would inject more gas directly from the bowl, I suppose, somehow.
Looks like it is a natural gas inlet.
It worked on static motors but failed when attached to movable vehicles because they couldn't find a hose that was long enough to go to town.
Fitting with a shut-off, I'm guessing the tee mated with an adapter soldered to the carb bowl ??
Quite the invention that's not self-explanatory. Maybe some kind of adaptation to start on gasoline and switch to fuel oil (kerosene or "low-cost" fuel) ?!?
Fred - Aside from your humorous "quip" about "not a long enough hose", I think you hit the nail on the head!
I don't know how successful this was, but by the careful placement of the tube where it is joined to the throat of the carburetor, right in line with the axis of the choke butterfly, I'm guessing that someone who had a source of natural gas was attempting to use natural gas for fuel. And probably using the choke butterfly for a throttle. Again,.....just a guess, but what an interesting find,.....thanks for posting Corey,......harold
Here's another view.
It will work just fine on natural gas...as a stationary motor at the barn.
There you go. Nice one Vern. You get the cigar.
Charlie. Are you trying to kill Vern?
Cigars and cigarettes are bad for you.
Wine and bourbon are Ok.
Send him a bottle.
OMG, I don't drink or smoke (not even when I had a chance to get a cigar in Cuba) but thanks for the thoughtfulness.
I do have an issue with natural gas though.
Please define natural gas!
Another possibility was for water injection to eliminate carbon build-up in the combustion chambers and foul the spark plugs.
Although water injection has been done for many years I remember that It was on the Mid 50ís Oldsmobile turbo to cool the combustion chamber.
I was caught doing it to my stock Buick at Connecticut dragway and DQed in the 60s.
If I were to do it again I would do a better job of hiding it.
Looks like a water injection port. Many old tractors used a water injection to stop detonation when their tractors were switched from Gasoline to Kerosene after the engine was warmed up. This carb may have been used on a stationary powerplant that was started on gas and then switched over to kerosene. On the farm kerosene was cheaper than gas.
Fred, now it's called Exhaust Gas Recirculation (EGR) but you probably know that. Exhaust gasses are water vapor used to cool combustion to reduce nitrogen oxide and hydrocarbons emissions. I wonder if that was discovered by accident when running water injection one day.
Defn: N.G. = too much New Orleans red beans and rice.
What's that thing soldered on the side of the bowl for though? too high to be a drain?
Flange bolts wallowed out, this may have been used on a different engine altogether. Interesting post no matter how it worked or what it was used on. jb