Originally posted by modellor
Thats the 3-port but the 5-port is identical. Personally, I wouldnt take on free. They are the worst engine ever to tune when totally stock. Picco are easier kept running and they can be hard to tune at times too.
Dont know what the guy was trying to spin you but looks like he was just trying to offload some surplus stock.
I agree. The rossi motor is garbage. Hard to tune, leaks oil with-in the external bearing unit, the i.d. of the internal bearing doesn't match with the diameter of the crank which causes a tremendous amount of tolarence, and they don't last long if your lucky to get a good motor. That's funny though, " I have a NF12 S5 motor ? " Wish I was there to see it. I would've said, " WTF ?!?"