hobot wrote:Rohan, the best place to search up this contest between low end response vs top end power is the fuel injection history. Basically single throats feeding single jugs needs to be rather bigger ID than if a larger manifold and smaller throat[s] feeding multiple jugs. Don't confuse manifold effects on dual vs single carb or injectors. Jim Comstock has switched from two smaller throats to one bigger throat for better results, so ask him if I'm misleading the anyone on this.
If I'm not mistaken though, Jim is using one injector per cylinder on his testing, so effectively he is running the equivalent of dual carbs for all his testing. ?
You never see race bikes running less than one carb per cylinder - anything less reduces the acceleration. Although may not affect the top speed in the slightest....
If you hunt around, some variants of Commandos (Seeleys ?) can get a straight run for the carbs down into the throats, no curved manifold.
And if you recall, when the Fullauto cylinder heads were announced, all the racers rubbed their hands in glee and asked if the port for the inlets could be had with more downdraft angle and 1/2" more metal above. (no such luck, but anyway...)