Yes it is a picco RR. Ok all you Mr Wizards just how is it a five port? (yeas it has five holes but is it really a five port) I only see three in the liner that allows fuel into the cylinder. Those extra 2 on the bottom go nowhere as they are always completely covered by the piston during its entire stroke. Now if there were holes in the piston then they would be meaningfull. If I drilled 27 holes around the bottom of a liner would you call it a 27 port? I don't think so. If it truly had 2 holes in the piston to correspond to those it would be a 7 port and it would be a true statement. And that is exactly why those are there. (Its called a, well you know, for one of those guys that gets cars and engines for free). Be carefull of hype on engines. More ports isn't always better, how they are arranged and what they do is more important. Those run pretty good I hear though. They finally fixed the rod (thank god, in the picco too) and reworked the timing some. The engine is truly a three port still and would be roar legal if the crank had a legal turbo cut in it. The RR is Illegal I know but I havent seen the non turbo plug collari inside yet. I should have that answer next week sometime. The collari and RR non turbo are Ifmar legal though as Ifmar does not have a stupid crank rule like we have.
Time will tell how those stack up. still have a crappy carb on them though, nova carbs and os carbs have it all over them. I do like the three oil catcher holes on the exhaust side to lube the hot side of the piston.(helps prevent siezure) I have used that on a few Eagle engines recently. A few Nova 21's have that to.
ahhhh roar illegal rr crank, the turbo cut is legal as long as it does not enter the tunnel. look like it do in this case. novas are cut on the counterweight not into the tunnel