Re: Fuel Timing

Posted by RN on November 25, 2017 at 09:26:11 from (205.213.104.118):

In Reply to: Fuel Timing posted by David G on November 25, 2017 at 08:09:56:

Direct injection like a diesel would work-- cost a lot more especially as a conversion/upgrade. One mention in article of 'wall' between ports-- use a extended intake runner for the manifolds with the injectors half way down intake runner. For a tractor installation the extra long runners would have some space consideration- but not as much as in a car body. Variation in length of intake runners and location of injector might help with the rich V lean needs of outside cylinders V inside. Think of the dodge slant 6 intake manifolds runner length and the old small block Chevy spider legged intake compared to 'log' intake manifolds of later Fords, Buicks. Basic block and heads remain as carbed engine, the intake manifold casting or welding would be a bit more practical. Could change cam to no overlap like early JDs- lose 10% power and 1000 rpm possible high RPM- but that wouldn't be consideration on tractor. Minor hassles to major problems on upgrade og old design-- the extra long intake runners might have the space for double injectors- one injector for idle, second squirting at mid range and higher, short duration but 2 injectors to intake runner. Flathead Fords and Continentals would get new head with extra holes for direct injection, 2 spark plugs, wouldn't have to worry about drilling hole between valves or intake manifold spacing. Speculation, possible use sometime maybe for injection of LP instead of gasoline. RN.

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