I am the Canadian Distibutor for Max Power engines by Massimo Fantini.
I can assure you that this motor is far better than a stock Novarossi. Here is what it has in addition to to the NS3.
- Tuned cranked. Balanced and drilled out with a silicone insert
- More elements on the head for better cooling
- Piston and sleeve have been matched
Correct that the sleeve itself it not modified like the P3 or S3 motors. Those are full out modified engines.
You can contact me at firstname.lastname@example.org
or call me at 416-570-0224 if you have any further questions. We would be more than happy to assist you.
All the best,