Puch

31229

Jasil full cheek crankshaft (+2 mm stroke) | Puch X30 NS / NL & Velux (Z50)

CHF 199.90

Incl. VAT, plus shipping costs

in stock

Only 4 pieces available.

Racing crankshaft with 45 mm stroke, suitable for manual Puch X30 NS / NL and thanks to the double keyway also for Puch X30 Velux Z50 engines.

High-quality and precisely fitting 930 gram full cheek crankshaft.
The balancing holes in the cheeks have been sealed with aluminum inserts for maximum pre-compression.

The following points should be noted when using this crankshaft:

  • The use of a 1.0 mm thick stroke plate is essential to compensate for the additional stroke. You will find suitable plates in the accessories section. We also recommend using sealant between the seal and the housing/cylinder. You will also find a suitable sealant among the accessories.
  • When installing, observe the crushing edge dimension (distance piston – cylinder head at TDC). This should not be less than 1 mm.
  • Due to the longer stroke, the pressure in the crankcase increases. For this reason, the oil seal on the crankshaft end should either be glued in with 2-component adhesive or secured with a retaining plate.
  • Running in the crankshaft: Run the engine for 30 minutes under low load with a slightly richer mixture.
  • When using 45 mm cylinder kits, depending on the model (with boost ports), the pre-compressed mixture may enter the intake port on UT through the holes in the piston.
  • Use with Z50 engines on the Puch X30 NS/NL (Fahrtwindgekühlt): Keyway at 12 o'clock
  • Use with Z50 engines on the Puch Velux (fan-cooled): Keyway at 14 o'clock
  • The housing must be slightly removed in the area of the cylinder neck so that the connecting rod cannot protrude.

The needle bearing (12/15 x14.2 mm) is included in the scope of delivery.

The matching bearings and oil seals can be found under accessories.

Branded product from the Portuguese manufacturer Jasil under the Top Racing brand.

Details

ManufacturerJasil
Weight930 g
MaterialSteel, Aluminum
Area of applicationTuning, Racing, Performance
Cheek typeFull cheeks
Crankshaft stroke45 mm
Ø piston pin (B)12 mm
Connecting rod length center-center90 mm
Thread typeMF10x1 (fine pitch thread)
Total length of crankpin on clutch side57 mm
Total length crankpin ignition side66 mm
Ø crank webs69.9 mm
Ø Connecting rod eye15 mm
Dimension needle bearing12 / 15 x 14.2 mm (axe 12)
Wide crank webs34 mm
Length 1st paragraph14 mm
Length 2nd paragraph15 mm
Length 3rd paragraph10 mm

Suitable for the following models

Puch

Z50 (X30 Sport)

Z50 (X30 Velux)

2-Gang MS, MV, MV50

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