[Ant]

Mike,

That info is very helpful, my application is mainly fun road with a careful warming up and a reasonable run, but not daily transport at all - sunday driver.

As far as track use the car will only see 5-8 laps of a 3 mile circuit, which equates to 7 minutes of racing, using 6500rpm - 6800rpm!
I can do my own engine work, as I have a reasonable mechanical engineering ability, providing I do my homework!

So I want to keep it simple and the Schubeck flat tappet is starting to sound good, but I would be very keen to hear anymore of your experience.