The process is the same but the constituents produced can be different different. Bruce spoke about "burn styles" now go and think about that one for a while :lol:If you look at what Greg wrote here he stated quite clearly that it was about energy management. Why, because there are many factors that affect vaporization (liquids don't burn gasses do) and where it happens. To give you an example Bruce changed the camshaft on his engine going larger (From memory a local prostock class) and that changed the vacuum generated most likely at the valve curtain diminishing the vaporization rate so to fix it he had to build smaller carbs to get that back what he lost to make the same power.
Its how you manage the energy imputation to the fuel and where that dictates the quality of the burn. It can be done in many place and messed up in many places......
Bruce developed his own platform to be able to adjust droplet sizes and that lead him to certain conclusions by being able to change the burn that took place which would also manifest itself on the plug. That's why he advocated reading plugs not wide bands. The chemistry produced whether its a high CO or CO2 burn manifests itself on the plug.
What fuel you use is Irrelevant ultimately as the process is the same you have to convert the liquid to a gas to burn it to release the energy to the piston and crank. The better the burn the less time it requires. The energy required for different fuels is what differs.
Which Carter? The earlier original carter 625 or the Federal Mogul produced carbs with different calibrations?
