03-06-2018, 09:02 PM
Greig I raced with a Nippy cam in one of my engines for several years, it produced reasonably good power and the engine certainly had a bark. However even with some very strong valve springs I had issues getting it to rev over 6K without valve bounce, although mine survived the Nippy cam has unnecessarily high lift which puts a lot of strain on the cam gear, block studs and top face of the block. I later changed to a cam ground for me by a well known UK specialist, this gave me a worthwhile reduction in lap times as well as noticeably more torque and no valve bounce, I would suggest this is a path of further development well worth exploring.
Black Art Enthusiast