800 to 900 conversion?

[Catrunner19]

so I have my chassis pretty much put together for now, and its time to move onto the motor. The original bottom end is out of a 02 zr 800 efi and I would like to convert it to a 900 and stick with the efi currently I have the 900 cylinders and a 900 rk tech head. can anyone else fill me in on what else is needed to do this swap?

Also i plan on doing oil injection delete to free up weight is this still possible with the efi? and with the 13:1 compression rk tech head will i need a fuel controller to run it or will it be fine without?
Any insight would be greatly appreciated!

 

[Arcticatdan]

Get ahold of Arcticatwill. We did his 800 to 900 efi. We added fuel presure and a timing key installed backwards to retard timing and all worked great.

 

[stanredrider]

Shouldn't have any problems, I did this on my old 800 went with the 883 bore on it after scoring a cylinder. You will need a fuel controller but other than that pretty simple. That sled was a runner once I got it dialed in, kinda wish I still had it.