ORIGINAL: Car-Boy
The T3 does not have 2.2 hp. It take porting and good tunning for an OS18tz to put out 2.2 hp.
Thats weird, because on HPI's website it state 2.2HP:
http://www.hpiracing.com/kitinfo/105936/
Nitro Star T3.0 engine
The Nitro Star T3.0 engine is the powerhouse behind the impressive speed of the RTR Nitro RS4 3 Evo+ car. With 2.2 horsepower on tap combined with the Nitro 3's 2-speed transmission, you can get off the starting line fast and reach immense top speeds in no time! The engine is started by a simple pullstarter system and is protected by the included 2-stage air filter for extra protection, and the two-needle carburretor allows you to fine-tune the performance of the engine for any kind of weather or fuel.
Displacement: 3.01cc
Boar: 16.8mm
Stroke: 13.6mm
Power: 2.2hp @ 31,000 RPM
Maximum RPM: 32,000 RPM
Carburettor: F2-6.5 (Composite 6.5mm)