Yeah what happens with getting the engine up to heat is that tolerances expand to their designed fit. This causes the piston and sleeve to wear at a much slower rate. You can run hard and hot all day long and at the end of the day your engine is still nice and tight. Usually using this method saves bearings and rods. Youll find the engine will come on power near the 3 to 4 litre mark. Thats when it will wake up and take on a whole new persona.

Cheers MM