Propane/oxygen in the intake

I did a little experimenting today. I mounted a ether starting injector from a truck tractor and used propane, but it gave me too much white smoke with only a little extra power. But when I use a MAPP gas tank I had only a small amount of smoke with considerable power increasing. I will put it on a dyno this week ad see the difference. By the way, I am just spraying the gas into the intake of the carb with an 1/8" plastic tube. I tried both the gas and the liquid from the propane and the MAPP, it worked better with the gas than with the liquid.

I was able to hide all of this system under the hood and side shields. I placed a hidden foot controlled momentary switch so that when checked for RPM's I would be right. Seems that I can only use this system when above 1/2 throttle, otherwise it just chokes out the engine.

Oxygen and propane together? Might work, if the proportions were right. Ever seeh how an NOS system works? Nitrous oxide is 36% oxygen by volume, whereas outside air is about 20%. When you add that extra 80% of oxygen to an engine, you also have to add a corresponding amount of fuel, to avoid "blowtorching" the engine. But also remember that, when you ignite that mixture which has more fuel and more oxygen, there will be a corresponding increase in cylinder pressures as well. In the early days of nitrous, some drag racers didn't understand that, and you sometimes saw engines "grenade" as they blew cylinder heads right off the blocks...and ususally it was nitrous that got blamed, rather than the racer's lack of knowledge.

If you're pulling an antique, it'd be hard to get the plumbing for nitrous or any other similar "additive" past the inspection stage...if they're checking engine rpm's and such, and they don't see THAT, you can only imagine what they "didn't see" on your competitors' tractors...and you might STILL be at a disadvantage.

Just MY opinion...YOUR mileage may vary, void where prohibited, and alcohol may intensify any side effects.

That's what I run in my JD G...Little NO2, along with some anabolic steroids!

Seriously,...just pumping MAPP gas into the manifold is only gonna make the burn cooler and less efficient. Unless you had a way to lean out the gasoline going through carb at the same time the MAPP was applied. I'd really check into the way MAPP burns before you did too much more testing. I believe it burns hotter than LP, so if you really have some monsterous compression, you might run into some problems. Without a real good way to regulate it along with throttle position, I don't see how it can work. When the engine lugs down and sucks in less air, but the MAPP is still on full bore, you're gonna flood it and it's gonna stall. Then what do you do if it backfires??? This is why there's rules. To keep the people around the people that don't think of saftey safe!!!!