PC800 re-measured: 36mm inner, 42mm outer.
V-Strom 1000: 45 mm throttle bodies
V-Strom 650: 39 mm throttle bodies (or are they 42mm TB’s? seems they are 39mm…)
Moto Guzzi Breva: 37 mm?
Kawasaki Vulcan VN1700: 42 mm? (note that this looks really nice because the connection between the engine and the throttle bodies can be removed and replaced with something different that I machine myself. downside is it’s fairly rare.)
Honda VT-1300: 38 mm (only one on the bike!?)
Honda VT-750 Phantom: 32mm (only one on the bike?!)
CAN AM 800 (2009 model) ATV with some sort of throttle body that might work…
Sportsman Polaris 800 or 850
Dodge Neon has a 50 mm TB.
Fuel Pump stuff:
Seems like just about any 80s Toyota or BMW fuel pump will work because they’re all external pumps. Like a Toyota Celica pump. You can get them on EBay for 45 bucks in the right flow rate.
Note: Derek Duncan has a MegaSquirt simulator I can borrow.
Need to find a proper tilt sensor for motorcycle fuel injection pumps. Might be able to scavenge one off of a motorcycle harness.
Will have to decide between modifying the fuel tank to accept an internal pump or having an external pump after the existing pump (low pressure then high pressure pump) with a surge tank. Also should put in an accumulator or something similar which can be done with a T off the fuel line past the high pressure pump and some rubber hose.
Looks like the V-Strom 650 throttle bodies have dual butterfly valves.
how to do IAC valve control with an MS-I http://www.msextra.com/doc/ms1extra/MS_Extra_Hardware_Manual.htm#Fidle