Re: Dual intake for thunderbolt

Posted by Jack Vines On 2013/3/24 11:37:17
Quote:
My thought was that the dual 2 barrels would even out the fuel distribution more than one center mounted four barrel. Maybe wrong there, as I never studied air flow dynamics etc.

Yes, no, maybe.

Yes, that's why all modern engines have one injector per cylinder; sometimes actually in the cylinder. That insures perfectly even distribution.

No, at the lazy RPMs the Packard eights turn, fuel distribution is not really a critical issue.

Maybe, define your goals:

1. Just want an interesting project?
2. Just want some bling under the hood at a show?
3. Want the highest horsepower possible from the I8? If so, why stop at two carbs; go all the way to one injector per intake port.

BTW, joey is just trying to stir up trouble. The dyno time necessary to measure the varying intake flow and develope a computer program to calculate the ideal custom cam timing for each cylinder is a hundred-thousand dollar project.

jack vines

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