Originally posted by afm
The Sirio S12 TRPI Evo2 is the Ifmar Roar legal engine.
It does come with the big blue heatsink, slide carb, and SG crank.
In Sirio engines, whenever you see the letters AF at the end of description, it means it has threaded crank, and are now found on Sirios site under off-road engines. S12 TRP AF would be the Evo2 on threaded crank.
The on-road .12 engines are under Touring engines, and all of them have SG cranks.
Picture and description is correct for the TRPI. The only incorrect picture is the one for the TUP engine that shows a threaded crank, and should be SG.
Hope it helps
AFM
In Trinity site say:
S12TRPI 'EVO 2'
.12 Standard Racing Engine
'EVO 2' SG style crank, 3 ports, 'EVO 2' ABC piston/sleeve, rear exhaust, slide carb
and have a photo of the engine, it has threaded shaft and a differentl heatsink like old .12 sirio engine black heatsink, but its blue, without atom draw
Look at trinity site
www.teamtrinity.com > Nitro Stuff > Sirio Engines
Thanks