Description
Crankshaft
-MAZZUCCHELLI STANDARD-
- Vespa Sprint150 (VLB1T),
- GL150 (VLA1T),
- GT125 (VNL2T),
- GTR125 (VNL2T),
- 125 Super,
- 150 super
Description
Crankshaft - MAZZUCCHELLI STANDARD- Vespa Sprint150 (VLB1T), GL150 (VLA1T), GT125 (VNL2T), GTR125 (VNL2T),
Fits in principle on all Vespa 125-150 largeframe models built between 1958 and 1976.
Crankshaft from Italy company Mazzucchelli with original kept timing angles, dimensions and is therefore intended as a replacement part for the original shaft. The connecting rod is forged, burnished and comes with the connecting rod bearing . Remember to order new woodruff keys if necessary.
| Bearings | |
|---|---|
| sizes: | 15x19x20mm |
| Gudgeon pins | |
| diameter: | 15 mm |
| Crankshafts | |
| stroke: | 57 mm |
| thread rotor side: | M11x1,5 right-hand thread |
| thread drive side: | M12x1,5 right-hand thread |
| diameter crankwebs: | 98 mm |
| width crankwebs: | 39 mm |
| diameter bearing seat rotor side: | 25 mm |
| diameter bearing seat drive side: | 25 mm |
| diameter oil seal seat rotor side: | 20 mm |
| diameter oil seal seat drive side: | 20 mm |
| width bearing seat rotor side: | 12 mm |
| full circle crankshaft: | no |
| rotary valve crankshaft: | yes |
| width rotary crankweb: | 15.3 mm |
| length rotary crankweb: | 214 mm |
| Vespa PX125-150 - intake timing for long rotary surface (33mm) (°): | 148 |
| Vespa PX125-150 - intake timing for short rotary surface (53mm fully modified) (°): | 171 |
| crankcase has to be milled: | no |
| engine casing has to be modified: | no |
| Connecting rods | |
| length connecting rod: | 105 mm |
| thickness connecting rod: | 6 mm |
| diameter small end connecting rod eye: | 19 mm |
| lubricating hole at small end bearing: | no |
| diameter crankpin: | 22 mm |
| lubricating hole at crankpin bearing: | notch |
| crankpin shims: | yes |
| OEM numbers (for comparison purposes only) | |
| Piaggio | 131321, 91060, 86657, 89267 |
Model / manufacturer cc Type Engine Year of construction Addition VESPA 125 125 VNT1-2 2T AC '60-'62 VESPA 125 (T2/125) (D) 125 VNB1-6 2T AC '59-'65 VESPA 125 GT / 125 Sprint 125 VNL1-2 2T AC '61-'73 VESPA 125 GTR 125 VNL2T 2T AC '68-'78 -> 145900 VESPA 125 S 125 VNS1-6 2T AC '59-'65 VESPA 125 Super 125 VNC1T 2T AC '65-'69 VESPA 125 TS 125 VNL3T 2T AC '75-'78 -> 18138 VESPA 150 150 VBA1T 2T AC '58-'60 VESPA 150 150 VBB1-2 2T AC '60-'67 VESPA 150 (T4/150) (D) 150 VGLA-B 2T AC '59-'65 VESPA 150 GL 150 VLA1T 2T AC '62-'64 VESPA 150 GL Touring (DK) 150 VGLA-B 2T AC '57-'58 VESPA 150 Sprint 150 VLB1T 2T AC '65-'74 VESPA 150 Sprint Veloce 150 VLB1T 2T AC '69-'79 -> 294259 VESPA 150 Super 150 VBC1T 2T AC '65-'79 -> 412373
