I am surprised they make this mistake after correcting it on a earlier production run of the same size engines
yeah, that is weird
the correct crank has a nice 85 Degree radius from the crank pin to the counter weight. its easy to see.
I see- there is a properly machined chamfer (where the crankpin meets the counterweight) on the previous version P45 crankshaft.
That was an odd time period for Picco (ie. 2011 and after), their founder ("Mr. Picco") passed-away. Seems like things have'nt been the same since. The only new marine engine product being produced out of the Picco factory since have been P45R variants, under the brand "HP", which are distributed by Itani of Big-Hobby, Japan. Picco factory essentially builds these engines to Itani's spec's. He recently released a new "HP .45 EVO-2020" version. Problem is, he does'nt sell any of his product to North America?
Prior to producing the HP .45 line of Picco engines, Itani approached OPS to produce a new updated OPS .45 marine engine. So he (Itani), together with Max (owner of OPS factory), negotiated to purchase the Picco P45R molds and related tooling, directly from Picco. Max integrated the P45R tooling, combined with the original (old) OPS .45 piston/liner components, to produce the "2017" OPS .45 Marine engine. It is sold under the OPS badge (as you may know), but built to Itani's specifications. While the piston/sleeve assy are actually the old original OPS .45 parts stock (you can actually see the 4-hole head-bolt pattern machined in the top of sleeve), the porting is updated, and the piston is fabricated of billet aluminum. The rod is updated billet aluminum. The crankshaft is updated, including balanced (although I don't care for the updated 1/4-28 thread front-end shaft journal). Has a new billet aluminum rear plate/housing, with steel drum valve (running in brass bushing). Updated water-cooled head. Also, has updated carb.
Looking at the finished (2017 OPS .45) engine, you can clearly see that it was cast using the Picco P45 mold (observe for yourself from the images below). The big difference between the "HP" .45 and "OPS" .45 badged engines, aside from the internal specs, is that the HP is produced in the Picco plant.