dual fuel Draw-through turbo

[Anonymous]

I've been wondering if this would work.
If you took an old 3 two barrel carb system and ran gasoline in the center carb and Alcohol in the two outer carbs, Would this give you a livable high boost carb system that would have none of the alcohol hard starting problems?

I'm not planning on building this, just wondering if it would work.

I figure that a small center two barrel would run out of breath long before you developed much boost. The vacuum operated alcohol carbs would engage and support the higher boost output.

It's just a thought.

John

 

[rbohm]

8) that will be a very complaex, and unbalanced fuel system. you wouldnt get a proper mix of gas and alcohol, thus your fuel mixture will be unbalanced,a nd each cylinder wont make similar power. if you want a dual fuel system operating like you want, you need efi, a way to switch computers while the engine is running, an idea here would be a gm computer, and a jet 5 chip module where you can select which chip you want to run.

 

[SuperMag]

8) that will be a very complaex, and unbalanced fuel system. you wouldnt get a proper mix of gas and alcohol, thus your fuel mixture will be unbalanced,a nd each cylinder wont make similar power.

I dunno, I think a spin through the turbo would mix it all up nicely. It would work, but if the mixture was off to any degree, it would be difficult to determine which of the three carbys was at fault.

 

[twentyover]

I believe he's implying a blow through system (center and end carbs.)

Optimized compression ratio and timing for Alky will be different than for gas, each cylinder would produce different power. Tuning to prevent the center cylinders from melting down would most likely be much less than optimum for alky rich end cylinders.

Boost maps that controlled timing and compression pressure (probably by overboosting and limiting flow to the gasoline rich cylinders) while technically possible (with a bunch of hang on flow limiting devices between the manifols and valve, tough to do with an integral manifold.)