Old Norris Motorcycle Cam Catalogue pages re Norton

Some pages re Norton performance components from an old Norris motorcycle cam catalogue from 1979. Maybe of interest to somebody.

Yep, it's of interest. I have a Magnum 70 I used for a while. It worked fine and very similar performance to the race cam I bought from Jim Comstock, Webcam 86C I think.

It is an acceptable race cam, whatever is said in those notes. It is pretty much an SS (Combat Cam) with more inlet lift.

I would normally advocate a standard cam for a road bike, and I think this would be the limit of acceptable for a road bike hot cam.

I am now back to a PW3 profile. Great race cam.

Some additional basic information from the Norris Camshaft catalogue (1974) explaining cam profiles and how to "dial in" a cam.

Velly Good , THANK YOU .