The sound this 13B makes as it’s spooling up is great, And the fact that on a boat the modifications you can make won’t land you in trouble with the cops like they will on the street!
Not sure of the speed MPH or KPH(it states 105) or RPM, but it looks quick

Here’s a few pics of the series6 motor I’m in the process of building. At the moment it has the following,

Side housings reground, nitrided and lapped
Extended mild port
Exhaust ported
Series 4 rotors
Stationary gears machined to suit windowed bearings for added oil flow
SCR 3mm apex seals
New oil control rings, springs and side seals
New rotor housings, extra dowels, surface area of cooling pockets increased on hot side
Oil passages flowed and increased
Crank, rotors and counterweights balanced
Spark plugs lugs machined
As well as a few more “trade secrets”
It has the cosmo intake on it but will probably end up with the series6 intake(unless I machine up an adapter plate to fit the cosmo)

There’s more to do (turbo & manifold, injectors,etc)before it goes into my S2 Rx7 which is running a 13b cosmo as the moment, stay posted.