3118447 Malossi thermal group d.46.5 Piaggio Ciao cast iron

PIAGGIO CAST IRON THERMAL GROUPS

Having fun without complications

(6 transfers - 2-ring piston)

Malossi cast iron thermal units, the first and simplest step in modifying your moped's engine, are the optimal choice for continuing to use a standard or approved exhaust system.

In these thermal groups, the high durability characteristic of cast iron is combined with the almost obsessive quality standards of Malossi, one of the very few companies to demand the maximum also from this class of thermal groups. In this perspective, the very rigid selections for the coupling between cylinder and piston are inserted, rigorously maintained within the range of 20 microns maximum tolerance.

The thermal group offers an increase in power and torque performance thanks to the new cast iron cylinder, which, while maintaining both the bore and the connection technique to the muffler unchanged, has benefited from a total redesign that has led to the complete replacement of the internal transfer ports, which now allows for optimal coupling not only with our crankcases, but also with the original ones. In fact, the assembly of these thermal groups on the original crankcases requires only boring the cylinder liner passage.

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Compared to the previous version: the exhaust has been revised both in terms of its geometry, reprofiled and dimensionally changed, and in its timing, tuned to the intake timing; the intake transfer ports are perfectly symmetrical at the entrance to the cylinder and the flow path has a completely different orientation of the fresh gases entering the chamber. The big news is the rear transfer ports, which, having undergone a revision of the “claw” rear technique, now have an adequate inclination and, above all, a calculated progression of flow crossing areas. The union of the two rear ducts in the characteristic “H” shape allows for maximum exploitation of the pumping work, transferring the greatest possible energy with the least losses to the flows. These innovations translate into greater uniformity of the scavenging between the right and left sides, which determines better combustion and, consequently, an incredible increase in the characteristic efficiency of two-stroke engines.
The result?
An unparalleled increase in performance, which places our cylinders at the top of the range of cast iron cylinders on the market!
Compatibility Table

PIAGGIO HELLO
PIAGGIO CIAO PX
Code: 3118447
The Product may be reserved exclusively for competitions in places specifically designed for such purposes according to the provisions of the competent sports authorities. We decline all responsibility for improper use.
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