HI GUYS, first post on here after a admiring the site, club mate pointed me here, i am rejuvinating a rivers motor, and have a couple of questions, 1st, who made them? and where, 2nd, does anyone know the threads for the head bolts, and type, i have tried gauges, and taps in them, but nothing goes near, i am an engineer, making bolts is no problem, this was my fathers motor, and i want to run it, i am experianced with motors of all types, been flying for many years, thanks for any help given
Alan