Quote Originally Posted by Mr_will View Post
i think what you are getting at is, would the stock b16a cams be restrictive, with respect to the fact that theyre designed to deal with 1.6 capacity.

i do not claim to be any sort of authority on the subject, but my feeling would be the stock cams ARE restrictive, because since the capacity is increased, you would need more lift/duration to fill a larger combustion chamber.

b18cr cams might be worth a try?
Mr_Will,
It's not as simple as just increase duration and height.
Think about bore and stroke of each engine. Are they comparable? Is one a stroked version of the other? Think about what gas flow characteristics are getting the best scavenging. Need x-ray specs here. You should checkout the following site that says better scavenging can be had from smaller ports. How does that fit with higher lift/duration?
http://www.mototuneusa.com/break_in_secrets.htm