what have you done with stock FI and performance mods?, quest for a killer D-jet 2056cc motor Options

[realred914]

what are the trick mods for performance power when building a D-jet motor . it is a tired 2 liter that will be getting a big bore 2056 piston kit.

what are recommendations for valves, porting compresion , etc....

will be a driver car 91 octane gas, , have SS heater exchanger, and I do want heat.

what can be done during rebuild to beef up the power????

[Jake Raby]

so what I gather is offered by raby is a new bus head modified to replicate the 2 liter 914 head with smaller diameter spark plug threads but same chamber and ports. and same valve sizes. does this seem right?

Partially. The smaller plugs make for stronger chambers more resistant to cracking.

So it appears I can fix my heads to be more or less the same not sure if i will change the plug hole or not.

But you'll be making a significant investment in a set of castings that are still 35+ years old and are on their ninth life. I believe in spending more money initially but ending up with a component thats fresh and still on its first life, seems like money better spent to me. thats the reason why ALL my new engines and kits use these same cylinder heads.

so the stock valves work with the raby cam (still have no idea which cam to choose, several are offered)

I work it differently.. You supply me with the specs of the engine, your RPM range and a ton more info and I select the cam from my library. Here we do not use the "one line description" for camshafts because no one understands these cams better than I do, since I developed each of them and have used them in complete engines so I know their characteristics when coupled to various combinations..

You might be better off going with Elgin, they let you pick exactly what you want. The only problem with that is most people have no idea what they really need. There is a very good reason why so many people have told you to buy my cam kit.