Engine case -MALOSSI VR-One, reed valve intake, crankcase machined for King shaft up to 65mm stroke- used for Malossi 210/221 Sport/MHR, Quattrini M232/M244 - Vespa PX200 Elestart | Engine casing | Crankcase | Engines

Preview: Engine case -MALOSSI VR-One, reed valve intake, crankcase machined for King shaft up to 65mm stroke- used for Malossi 210/221 Sport/MHR, Quattrini M232/M244 - Vespa PX200 Elestart

Description

Engine case MALOSSI revised by KINGWELLE for crankshafts with 62/64/65mm stroke

Brand new Malossi engine case
Crankcase diameter spindled out to Ø100mm
Suitable for crankshafts with 62/64/65mm stroke
Tolerance of the bearing seat of the crankshaft bearing (limaside) corrected from -0.070mm to -0.045mm
Recommendation bearing for the limaside: NU205 C3

Malossi engine cases are the first choice for building a powerful and reliable engine for the Vespa Largeframe models.

CURB HOUSING DIAMETER
If a crankshaft from Kingwelle with extra long stroke (up to 65mm instead of 57mm series) is used, it is necessary to increase the crankcase diameter in order to be able to mount the crankshafts with their larger cheek diameter.

LIGHT MACHINE SIDE BEARING SEAT
In the same step the bearingseat of the light machine side bearing is reworked. Malossi meant it here with the undersize for the bearing fit a little too well. 7/100mm undersize usually leads to a very tight running bearing. Kingwelle reduces the undersize to 0.040-0.045mm.

RECOMMENDATION NU205 C3
An additional recommendation is the use of a two-piece roller bearing of the type NU205 with bearing clearance C3. This makes mounting the engine halves much more comfortable than with the one-piece ball bearing supplied by Malossi.

CONCLUSION
The most professional solution for large displacement HighEnd engines with Malossi MHR221 or Quattrini M244 cylinders. If you are aiming for performance well above 30hp, this is the perfect base.

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