PINASCO Slave Crankcase for Vespa T5 Models – a high-quality replacement with a large diaphragm intake and significant tuning potential.

With the Slave crankcase for Vespa T5 models, PINASCO is reviving the nearly extinct, legendary five-channel engine while also offering the possibility of implementing a modern diaphragm intake. The name T5 stands for “cinque travasi,” meaning five overflow channels. With this design, PIAGGIO incorporated a modern two-stroke engine into the classic sheet-metal frame. Replacement parts such as crankcases have not been produced for a long time. Thanks to the PINASCO Slave casing, these rare T5 engines can now be repaired or completely rebuilt.

• High-quality replacement for rare T5 crankcases
• Generously sized diaphragm intake above the Crankshaft
• Enlarged sealing surfaces and ample material for tuning work
• Includes diaphragm intake manifold and RD-sized reed valve

The newly developed casing offers several advantages over the original. The most noticeable change is the generously sized diaphragm inlet above the Crankshaft. The sealing surfaces around the flow-through channels are larger than on the original, and the casting in the area of the cylinder base provides ample material to widen the flow-through channels or adapt the casing to high-performance setups.

Additional reinforcements are cast into the housing in several places around the bearings. The die-cast aluminum is of high quality, and the sealing surfaces are precision-machined. The two housing halves are centered using two additional Sleeves.

The PINASCO slave casing is thus not only a good replacement for defective original T5 crankcases, but also a solid starting point for further tuning modifications. With the exception of the Crankshaft and alternator, many parts from the Vespa PX can be used.

The package includes a diaphragm intake manifold and an RD-sized reed valve. The Air Bellow is rotatable and has a connection diameter of 34 mm.