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This is the Novarossi 367 Plus 2 2008 Version .21 Buggy Competition Engine.
This engine is pretty special because it was created from a completely new project than the other two new Plus 2 engines, featuring a new carburetor and new patented front bearing. Designed for buggy drivers who demand an engine with a lot of low RPM power and long runtime.
Typical 'PLUS 2' differences are: - Lightweight cooling head
- New carter backplate
- O-Ring supported combustion chamber
The name is actually a code, the first number is for the amount of crankcase ports, the second number for the thickness of the front bearing and the last number stands for the amount of transfer ports in the sleeve.
Cooling head
The cooling head of the PLUS 2 engines have some holes drilled in, to reduce the mass of this part.
Combustion Chamber
The combustion chamber is supported by an O-Ring which is placed between the combustion chamber and the crankcase to reduce the vibrations of the combustion chamber.
Crankcase
The crankcase has a 3 porting system. The shape of these portings obtain the best possible mixture flow.
Crankshaft
The crankshaft is grinded to increase the mixture flow and has a special shape to reduce turbulences inside the crankcase. The balancing is done by two inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. The ball bearing was lowered to 5mm. The front part was extended to improve the seal against fuel leaking.
Sleeve
The sleeve has 7 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.
Rear Cover
The rear cover presents a round shape to optimize the filling and reducing the dead spaces. The steel plate is to expand the lifespan of the conrod.
SPECS:
- Displacement: 3.49cc
- Max. Power: 2.97 hp
- R.P.M (Max. power): 35,000 rpm
- Practical range: 6,000 ~ 40,700 rpm
- Bore: 16.26
- Stroke: 16.80mm
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