M900 motor into xxx chassis?

[beethoven]

Dunno what the year crossover was on single-phase to 3-phase.

My Oct 97 M900 is 3 phase and would have been one of the first.
98 on is a safe bet for 3 phase. Check you have 3 yellow wires from alternator.

[Duck-Stew]

Dunno what the year crossover was on single-phase to 3-phase.

My Oct 97 M900 is 3 phase and would have been one of the first.
98 on is a safe bet for 3 phase. Check you have 3 yellow wires from alternator.

1998 air-cooled engines were the first 3-phase charging system bikes.  Water coolers had to make-due with the single phase until 1999.

[Desmo Demon]

As others have said, there are various things to watch out for to make it a more straight-across swap. If you just run across Terrific Deal A and Terrific Deal B and want to make something of the two, you can still probably make anything work if you try hard enough and have the right resources. I'm been slowly working on stuffing a '99 ST4 916 engine into an '88 Paso 750 frame and using a ST2/4 swingarm that is highly modified to match up to the Paso's suspension, but I'm into self torture....



One of these days, I'll get the one frame rail rewelded and then start assembling it and torqueing everything down. The two main issues I see in the future are getting the Paso tank modified to clear the wider head of the Desmoquattro vertical cylinder and arranging for a radiator system.

[Raux]

why a 916 motor on that? a 1000ds would have been sweet and maybe had fit better.

i may get flamed here, but i always liked the look of the Paso, so i'm very interested in seeing your project completed.

[Duck-Stew]

For about 3 weeks I had an overlap in my buying power that would have allowed me to get a 999S engine and wiring as well as an 1987 Paso 750.  Temptation ran high for those 3 weeks.... 

[Desmo Demon]

why a 916 motor on that? a 1000ds would have been sweet and maybe had fit better.

The ST4 engine becuase I got it locally for $900 with the TBs, ECU, wiring harness, and airbox. Throw in the fact that while I was rebuilding an '87 Paso 750 I kept picking up spare parts and people were even giving me things for free, and after selling a bunch of spares, I have less in the complete project with almost every part I need to build it for less than I paid for the just the engine.....and I still have spares I can sell.

My original idea was to cram a 900 carbie engine into the frame and see if I could build a *free* Ducati with my wheeling-and-dealing, but this project will be more interesting.....and have about twice the HP as a stock Paso 750.    I'm shooting for a total project budget to be well under $1000, even after I paint it. I have no idea when I'll finish the bike with work, the family, and graduate school. I started stuffing the engine into that frame over a year ago and haven't touched it since last April.