i went in for a bit of a play today on a public holiday, but ended up in a conceptual crisis.
i worked out the ie model airbox has the rear mounting in the same place as the carby airbox, just with shorter mounts so the cross bar was further back to clear the rh throttle body. so mounting it in the same place will just need a piece of angle tacked to the frame as a jig. simple.
but then i got into a "why am i doing all this when i had enough stuff to build a carby model engine to just fit in anyway" and then i got a bit "it's an early m900 frame and they're getting pretty desirable now and i'm going to cut it up and do i really need that pressure" tempered with "the only m900 bit i have is the frame and it's already had the tail chopped off so what does it matter".
i've already welded a fairing mount to the front of the steering head, but that's only a cut off wheel away from being original.
i was intending to cut the pillion grab handles off at the back and the fuel pump and air pod mounts, but i really hate the "can't go back" finality of it and now it's doing my head in.
the carb versus injected thing is because the 659 motor would no doubt work better with the shorter inlets of the injection system because they have big valves and short cams compared to the earlier long manifold carb motors. but then being a 659 it's probably not big enough to overpower the manifolds. 750 carb manifolds go straight on and i have some fcr39 to fit and i just need to sort the ignition then. but i really wanted to inject it because it would just be a nicer bike. but i found a carby wiring loom kicking around today, so i need to buy way less parts to carb it than i would need to buy to inject it. and it'll be a heap easier. no cutting/welding in a new frame cross brace either.
and then i was thinking i really didn't need the 659 engine as i have a 400 with all the bits to make it a 750 or 800 apart from a crank. the ported/big valve/big cam/high comp 750 engine was pretty good, and with 800 heads it'd be even better. but i remembered the reason i wanted a small engine for it in the first place was that it doesn't need an oil cooler. one less thing to annoy me.
what to do.