I would just like to say one thing. I have seen in person, an 8500rpm Duratec race motor in person, live and in colour. This engine once belonged to Chris Reinke and was once in his Contour race car. The engine was freshened by Kinetics Engines in Michigan, and is now being used in JR Racing's Contour Race Car. Where am I leading with this?
There is no crank harmonic damper on this motor and on the other end of the crank is a Fidanza flywheel. Why are they able to run these race motors at 8500rpm all day long, and all they have is a lightweight underdrive pulley? I have also seen Leo Capaldi's engine up close and personal, and it has a UD pulley too, and is prepped by Kinetics too.
Please explain.
