Looking at the fiche for both bikes, there are slight differences in the frame but the motor mounts look identical. The main differences in the frame that I see are the 600 frame has adjustable swingarm pivots where the 636 frame does not. Check out ronayers.com for the fiche on both bikes, that should help you out alot. The bikes are very similar with the 600 being more track oriented. Motor mounts both look identical with the same part #s and I would bet the engines are the same external dimensions so there shouldn't be issues with the drive gears lining up. The wiring harness for both bikes looks the same aswell. ECU connections are probably the same as I think you can use the Kit ECU on either bike.

 

hey xtrememlr, congrats on having the best looking ninja ever!!!

 

It should be ok. I am running a 636 ECU on my RR

 

The only thing you will need for the swap is the ecu. I did the same thing with my 03RR.

 

I've done just the opposite. I have a 6RR engine in a 6R frame. I bought a wrecked ZX6RR and was unable to get it licenced so I swapped everything over to a 636 frame. No alignment issues here after 3,000 track miles.

 

Don't even need the right ecu i ran the factory suspersport ecu in my 636 '03 with no probs at all

 

Anybody have anymore insight on this option?

 

The only difference is the bore of the 6RR motor to the 636 motor.

Everthing with interchange, they are the same basic bike minus the little tweaks added to the 6RR.

 

So in reality you could have a pretty awesome bike if you took a 6rr and put a 636 motor in it?

 

In '03 the 636 didn't get the slipper clutch. Optimally, you'd want the 636 motor with the 600's trans,for your year anyway. Swapping motors is a straight bolt-in

 

Originally posted by dlucky03zx6rr
So in reality you could have a pretty awesome bike if you took a 6rr and put a 636 motor in it?

You would basically have a 636 then. You would just have the slipper clutch and a few other RR add ons

 

I ended up buying the bike listed in the first post. One thing I left out was that the 636 engine had the RR slipper clutch installed. The guy who did the work is a member of this forum. If you do a search on swapping the 6RR clutch into the 636 engine you can find info. I have done a couple of track days with the bike and I am very pleased. The slipper is definetly an asset at the track.