My engine builder has told me to hold off on going with lightweight pistons, as I am only shifting at 6800 RPM, his theory is untill you spin it over 7000, pistons don't matter, I see his point, but regardless they would help ANY motor spool up quicker, CHRIS, you guys run "fly's" on your dirt tracker?
Been on HIATUS, glad to be back, any changes in the last 4 months or so?
Jay