Warning: This engine is designed for high RPMs. Peak power is achieved between 10,000 and 13,000 RPM, so good mechanical skills are required to operate the engine effectively!
-70cc liquid-cooled aluminum kit with cylinder head, 6 transfer ports, MALOSSI twin-ring cylinder, set up as a single-cylinder engine, Stage 2 tuned for long stroke, 132°/192° port timings, 15.5:1 theoretical compression ratio
MVT digital direct ignition electronic cone set at 0.45
MALOSSI crankcases with large reed valves, milled and integrated to accommodate a long-stroke crankshaft/long connecting rod
POLINI 23mm flexible adjustable intake pipe
MALOSSI VL6 reed valves fitted with specific carbon reeds for these engine speeds
POLINI 24mm EVOLUTION carburetor with flexible mount
-Reinforced C3 bearings with polyamide cage
-Reinforced crankshaft with solid RRD counterweights, long stroke, long connecting rod and its base shim
-Crankcase screws, cylinder head screws, studs... High quality
-You can buy a DOPPLER motor spring in your basket, in which case we will mount the spring and remove the small tab!
The entire unit is expertly assembled (squish clearance, cylinder volumes, improved lubrication of the connecting rod head and foot springs, etc.) and thoroughly inspected. To further enhance this complete engine, you can install the MVT SP3 exhaust system.
MOTUL 800 ROAD 100% synthetic oil is highly recommended, at 2.5% or even 2% (too much oil lowers the octane rating and therefore engine performance, too little risks engine seizures and premature wear)!
*Delivered without antiparasitic treatment
*Delivered without a candle, B10ES recommended
*Delivered without a variator, the ER3 Doppler is a very good variator.
*Delivered without a belt; you will need to purchase a good quality belt such as the DOPPLER
*Delivered without a motor spring, a yellow DOPPLER is perfect
*Delivered without exhaust; you can pair the engine with an MVT SP3 70
*If your original 103 is 6V, you will need 12V bulbs and a voltage regulator to work with your MVT DD ignition.
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