Make Your Full-Size Car Get 200 MPG

[Gameface]

I am sorry @Gameface if this gets a little technical. I understand you kids do not work on vehicles anymore.

It is easy to explain with physics. The refinery industry can crack oil into smaller strands. They no longer only distill the crude. More hydrogen per carbon means more energy expenditure upon combustion. There is a reason natural gas vehicles produce more horse power an more mpg per gallon of gasoline equivalent.

Natural gas is not the optimal carbon chain. Something about being to short an not quite enough energy in the fewer carbon carbon bonds. In addition the higher carbon chains an rings can also volatilize inside the intake manifold. That is what it is there for.

OP is well uninformed. It is not the carbuerator that was the secret it was the manifold an that is why tom Ogle could not figure it out. See, when he rebuilt his engine he assumed it was the carbuerator cause no real explanation how the Pistons or valve train could be the cause. He did not port an polish or anything special, only stock parts.

Back to petro. Tom Ogle lived near a refinery that was the first in the nation to crack medium to shorter carbon chain fuels from waxy crude. He happened to have the rare exact combination of the right fuel with the right intake manifold. His manifold for some reason acted two-chambered. A medium heat zone followed by high but quick heat as to not explode the fuel upon back exhaust from the intake valves.

When the integrated oil majors found out there refineries would only need to produce 1/4 there product they took care of Mr Ogle an his green machine.

umhumm

 

[♪alt13]

I used to have an old jeep with a 360 AMC V8. It got around 12 highway. I let someone borrow it. They didn't put oil in it and screwed my engine up. I got another 360 on Ksl. The only difference was that the intake manifold was for a 4 barrel carb. I tried to swap the intake manifolds but mine seemed to be a little warped and I could not get it to seat right. I didn't have money for a new carb so I decided to buy an adapter in the mean time. So it was a 2 barrel carb/adapter/and a taller intake manifold. I took it to a mechanic to tune the carb because I didn't really trust myself to get it right. After that I had noticeably more power and got 25 mpg until I sold it. I didn't believe it at first but each time I filled it up I was getting right around 25. I started to think that there was something wrong with my odometer. I filled it up and went to Wendover. Odometer was fine and sure enough I got 25 mpg. It still kinda blows my mind.

 

[Boris]

My bad. I confused Tom Ogle with another cause his vaporization system was after the carbs but before the manifold. I think his used no carbuerator at all.

I have experimented with manifold leaks trying to replicate the two chamber heat phenomenon. They use this principal in heavy industry. First compartment volatilizes the waste an the second burns it off. My system an that of a guy murdered by big oil uses a 3rd compartment system. 1 volatilizes, 2 puts the gases quickly at high heat, 3 is the piston chambers where high pressure from the hot gasses causes rapid detonation and thus better energy transfer into the drive train.

I took a 1974 Jeep Cherokee 5.9L from about 12 mpg to over 16 by drilling various holes an cracks in the upper manifold chambers to lower the volatilizing temperature there. I had to put cardboard in front of the radiator so the engine would run hot for the back half an run the carb very rich to compensate for the air leaking into the manifold.

I found out how to stress fracture the manifolds in a process I own the patent for to this day. That took me from 16 to over 23 mpg. I doubled the efficiency with a few holes or cracks by altering the volatilizing process. My theory was that less oxidation and nitrogenation of the fuel happens when temp is not ramped up quickly in the presence of oxygen. You know oxygen comes through the carbuerator as well.

Key is 1st chamber does not oxidize/nitrogenate and the back chamber has little time to as the air fuel mixture is rapidly sucked in by the downward pulling pistons and energy is locked in as intake valves shut.

My engines were much less prone to blowing up manifolds like you see on funny car racing. I never got pre ignition fire in the manifolds.

 

[Boris]

I used to have an old jeep with a 360 AMC V8. It got around 12 highway. I let someone borrow it. They didn't put oil in it and screwed my engine up. I got another 360 on Ksl. The only difference was that the intake manifold was for a 4 barrel carb. I tried to swap the intake manifolds but mine seemed to be a little warped and I could not get it to seat right. I didn't have money for a new carb so I decided to buy an adapter in the mean time. So it was a 2 barrel carb/adapter/and a taller intake manifold. I took it to a mechanic to tune the carb because I didn't really trust myself to get it right. After that I had noticeably more power and got 25 mpg until I sold it. I didn't believe it at first but each time I filled it up I was getting right around 25. I started to think that there was something wrong with my odometer. I filled it up and went to Wendover. Odometer was fine and sure enough I got 25 mpg. It still kinda blows my mind.

You posted this as I was writing about my 360 5.9L. How cool!

Taller intake manifolds allowed you to burn leaner and take more time for the vapors to volatize.