skinnydog0_0 wrote:I have a race RVF, and just finished rebuilding a road ZXR 400. The zxr (as has already been said) seems to flex and wallow, not something i was very keen on. My ZXR is a missile, it only has free flow filter and micron pipe but it's bloody quick. The downside is the engine parts like rocker arms and cams are not built to last, i had a doner engine and 4 of the rocker arms had lost their hard facing and one had worn completly damaging the cam lobe. I have made one good engine out of the 2 i had so you will need a good supply of spares if you are going to be tuning it alot.
If your going to be pulling the engine apart on a regular basis then you can check for wear and replace as necessary. The zxr is noticeably lighter and as a race bike i think it would make a very good wepon (as the results seem to prove both with you and here in the UK).