I am currently building a mild CB350 engine. My current build plan is to use wiseco 66mm 10.5:1 compression pistons and a megacycle 123-20 cam from bore-tech, along with a mild porting on the head. I have replaced my stock valve guides with a set of bronze guides from Schumann Motor Works. In addition I will be using a set their performance valve springs with titanium retainers and locks. My question is will I have enough clearance between the valves and the top of the pistons using this combination.
