This is the Novarossi .28 3 port Big Block Nitro Engine 528XSP. This engine is rated at 2.8HP. This version is a more economical Novarossi big block .28 engine. The 8 port version of this engine (528XRP) costs much more money and is only rated at 2.85HP. In our opinion, .05HP more is not worth all the extra money, so the 3 port Novarossi .28 engine is a good choice for those who want made in Italy Novarossi quality & power at a more reasonable cost. Below are the specs given by Novarossi on the 528XSP:
Displacement: 4.66 cm^3
Maximum power: 2.80
RPM: 32.000
Bore x Stroke: 18.35 mm x 17.60 mm
Ports: 3
Piston: CNC machined
Crankshaft: Ø 14 mm
Crank Type: SG Pull-starter
Glow Plug Type: Standard
Exhaust Type: Rear
Carburetor: Ø 8 mm (interchargeable insert)
Carb Type: Slide
Carb Material: Nylon
