Cylinder kit -PINASCO Zuera Ø57,5mm SRV reed valve 135cc- Vespa V50, PV125, ET3, PK50, PK80, PK125

Preview: Cylinder kit -PINASCO Zuera Ø57,5mm SRV reed valve 135cc- Vespa V50, PV125, ET3, PK50, PK80, PK125

Description

The Pinasco 135cc ZUERA cylinder, named after a Spanish race track, comes out of the box with a rather sporty 125/185 head angle. This already puts it above the Polini Evolution 1, which obviously was the inspiration for the design here.

Unlike other cylinders, the openings of the overflow channels in the cylinder base are already open. This requires the adjustment of the fan channel on the stator housing (explained in the manual supplied with the cylinder). The cylinder base has a diameter of 61.3mm, therefore it is not necessary to enlarge the cylinder base bore in the engine housing.

The one-piece exhaust is manufactured with about 66% width in the direction of durability. We would assume that the Zuera 135SS, due to its more sporty exhaust geometry, is slightly above the Polini Evolution I in terms of performance.
Due to the angles of the overflow channels facing the exhaust, the Zuera 135SS also supports exhaust systems that like to reach into higher rpm regions.

Technical details

Bore 57.5mm
Stroke 51mm
Capacity 135ccm
5 overflow channels
One-piece outlet, trapezoidal, chord 38.5mm ≈ 66%
Outlet stud M8(not included, we recommend Piaggio)
perforated outlet flange 52mm (as exhaust gasket we recommend BGM)
cylinder base gaskets three pieces in 0,1mm
cylinder base Ø61,3mm (suitable for Piaggio)
cast iron piston 169gr, one piston ring 1mm
piston pin safety device type G, 1mm
cylinder head 8-fold screwed (stud bolt + 4pcs. M8x25mm)
spark plug 14mm, long thread, recommendation B9ES, B10ES
spark plug position, central
ignition timing 17° (recommendation from Pinasco)
control angle 125°/185° with a pinch dimension of 1.0mm and 51mm stroke

the pinch edge of 1.0 - 1.1mm can be adjusted using the 3 0.1mm cylinder base gaskets supplied. When it comes to cylinder head gaskets, Pinasco keeps a discreet distance, also with regard to the sealing and the connection to the exhaust. An exhaust gasket suitable for the Zuera SS135 is not included, nor are the required exhaust studs.

The PK125 exhaust gasket from Piaggio fits the flange. However, the SS135 outlet is 31mm x 27mm. This means that the PK125 exhaust gasket will not fit here due to the smaller inner diameter. Alternatively you can use the BGM exhaust gasket. With this variant, however, you must extend the hole in the gasket by a few millimeters.

FAZIT
The bottom line is that Pinasco has created a sporty cylinder that offers good performance with little effort. Whether with SHB19, Polini CP carburetors and Piaggio or Polini Banana or with a Keihin 28 and a Franz - the Pinasco SS135 can be used in a performance range from moderate to sporty with the right environment of carburetor and exhaust. intake port and connecting rubber

piston, incl. piston pin, piston ring and fuses

fastening material cylinder head

gasket set cylinder base

plug for the cylinder cover

BITTEN NOTE: The frame cut-out in the area of the intake port may have to be be modified/extended

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€473.00 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)

P For this item you get fidelity point/s

Gudgeon pins
diameter:	15 mm
Cylinders
type of cooling:	air cooled
cylinder head inclusive:
cylinder gasket set inclusive:
Pistons
production method piston:	cast

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