YAY FOR FLICKR!
This is how it's starting to mock up -
FSCN0976 by
Chris Conrad, on Flickr
DSCN0977 by
Chris Conrad, on Flickr
DSCN0978 by
Chris Conrad, on Flickr
Okay - looks like I'm back to posting photos. And to Photobucket . . .
FLICKR YOU!Certainly not as pretty as a Weber DCOE - but this looks like it just might work.
I purchased these aftermarket throttle bodies for a KZ1000 about 2 years ago. I have NO IDEA who makes them, but they're clean and the right size - ~38mm.
Mentioned previously, we whittled down one of my stock k-series manifolds, and once we get the ends machined down to a consistent height between the four ports and blend the intake to the throttle bodies, other than bracketing - which I bought screws for today - we should be pretty much good to go.
What saves a lot of time with this is that the injector angle is spot-on for the application. A fabricated manifold would have taken days and dollars to make work.
Will need to produce a proper fuel rail - this one is cracked, but serviceable for a mock-up.
The one issue with the new throttle bodies is that they have two injector bungs on them, which I suspect were in place for two fuel rails to support an NO2 set-up on the previous installation. I'll be using neither.
A trip down to American Science and Surplus may have solved the problem. Picked up some "0" sized 13mm tapered test tube stoppers, and they fit rather nicely. My thinking is that I can trim them down, tap threads above shoulders in the injector bung, and secure them in place with set screws of some variety. At least that's the idea I've been muddling over in my ice-encrusted noodle this weekend.
Sam mentioned he supported high impedance for Bonneville, but didn't mention why.
From what I've been reading, for idle and midrange, peak-and-hold seems to be the way to go. But from an electronic point of view, I'm liking the circuitry "safety cushion" that lower amperage drivers and high impedance systems offer. I do understand that they need to be "finessed" more, but honestly, anything has to be more accurate than the controlled leaks of a carburetor circuit.
Please, share your experiences with either or both.
Stainless - still deciding on an ECU. I've got a bit of a handle on the Electromotive systems, and they make a 4 cylinder sports car system utilizing high impedance injectors, as well as their other low impedance systems. Both data log, but the 4 cylinder system requires I have a laptop on board to do so.
Tom down at T&T has a ton of experience with the Holley systems, but I'm not sure that they're compatible with the wasted spark coil packs I already have. I wanted to talk to him at lunch about it last Wednesday, but the day exploded, and I didn't get the face time.