None at all it's the same engine you had, just an interpretation of the description.......
O.S. Engines 12TZ (P)-T3, 3 Port racing .12 Engine
As far as carburation goes, this engine will work flawlessly if you kep your hands out of the low end and so c alled mid ramge needles....both have to be flush with their bodies, then just tune with the high end and idle needles
The factory setting for HSN is 1 3/4 turns open from closed (for racing), and for break in 2 turns out
AFM
Nice one AFM,
hey what you recommend as a pipe and manifold and plug?
Turbo OS plug No#6 - also anyother plug makes can go into the OS? Nova?
Manifold: Conical 5 fin or 6 fin?
Exhaust: 2601 or 2630 Novarossi?
Cheers fro your help mate - every little bit i take iin....
Regards
Frankie