I did take some time to disassemble and clean the cylinder head. It looks very good, which is what I had expected. Maybe I can mock up the head, intake, and carb combo to confirm the fit. I also thought I could try hacking the FI intake manifold first, since the CDM carb intake is more rare. I recall someone else doing that, but it seemed like the fit wasn't as good. I'd like to check flow differences, too.
I took a couple minutes to put most of this together- really I listened to that song techno song "satisfaction" and then hank williams "hey good lookin" so these are by all means, rough and approximate.
Heres an idea of what you'd be looking at cutting: [red lines and blobs are cut away material]
I find it best to keep as much aluminum intake runner length as possible. The SI manifold, as you can see will be much more work.. but coming from me as I need a cdm IM, please don't kill it but do what you have to.
the injector rail 'bolts' will have to be cut down.
the injector holes will need to be filled
OR...you can connect them in a variety of ways.
brown lines represent metal piping then connected to probably large low press fuel hose, injector holes would most likely be tapped with a hardware store available pipe tap as well as the pipe [depending on setup, the use of t's and 90 deg elbows would be recommended rather than bending the fuel hose]
the black rectangles I drew are valves to on/off the flow between the diff runner setups. the valves should be electric and available from the uber electronic guru store (need to pay them a visit because they have sooo many cool little useful trinkets in hobby building!) they could be switched automatically via rpm signal like the typical shift light hack w/relay or vacuum switch w/relay.
why? the same concept of typical carburetor "secondaries" applies, yeah it might only be a small amount (can be opened up for more flow!) of extra flow but that can make a lot of difference- allow the use of smaller carburetors for better fuel economy and drive ability, and better top end.
if your carburetors are big enough [in the case of my cbr carbs on my EW1, maybe a bit oversized] then it might not really make any difference; but with a setup like in my "new" engine with the bike carbs being a little under sized, I believe it will make a difference- what a/f the "secondary" tubing will be sampling is another question yet to be answered.
maybe I should make a thread about this?
-zak
He who dies with the most toys, wins.