PARMAKIT AP THERMAL UNIT CYLINDER KIT

Racing Cylinder PARMAKIT W-F.. ..orce LC 135 cc for Vespa ..orce LC 135 cc for Vespa 50-125/PV/ET3/PK/S/XL/2 Ø 58,0mm, aluminium, 5 ports, stroke 51mm, 1 piston ring(s), with cylinder head, direct intake, incl. reedvalve, manifold 25mm, sparkplug centered, RACE-Tuning, for highestdemands For race use only. Not admitted in the area of the German StVZO! Speed thrills! PARMAKIT, together with Italian racing champ STEFANO SCAURI, has stormed the market with their purebred SP-W-Force. SP stands for Sport Production, and W-Force means a reed valve direct intake in the hottest up to date W-Force version. Move to the head of the class with 2 separate reed valve casings instead of just one to get an optimal flow surface. The reed valves star in the successful Aprilia Rotax cylinders. Double dipping here: they are fed not only through the intake, the generous Boysen port is the other side of this successful hottie. The exhaust port is bridged, with an exhaust width of 82%. VERTEX delivers the piston and offers either a 58 mm or 60 mm bore coated forged piston with a 1.0 mm piston ring. Timing of both cylinder kits is identical. All cylinders in the SP W-Force series have a larger base diameter. The crankcase must be modified and, at the very least, the cylinder base adapter will have to be milled. 58.00 mm -> base adapter in casing 63.0 mm, tolerance +0.03 - +0.05 mm, 20.0 mm deep. 60.0 mm, 97 mm connecting rod -> base adapter in casing 65.0 mm, tolerance +0.03 - +0.05 mm, 20.0 mm deep. 60.0 mm, 105 mm connecting rod -> base adapter in casing 65.5 mm, tolerance +0.03 - +0.05 mm, 7.5 mm deep measured from original gasket surface. The squish clearance should be at least 1.3 mm, exact adjustment through spacer included in delivery. Exhaust stud distance 62 mm, exhaust system must be modified, for example with a modified flange plate. Conclusion: This race cylinder is true to it's name: performance of 28 PS can be achieved and maintained. Aluminum/ 55/58/60 mm bore/ 5 transfers/ 125/135/144 cc's Aluminum cylinder, 51 mm stroke, 97 mm or 105 mm connecting rod, 5 transfers, direct intake, W-Force reed valve, VERTEX forged piston with 1.0 mm cast piston ring, bi-conical gudgeon pin, 8 mm exhaust studs with 62 mm stud distance and 36 mm exhaust diameter, 8x screwed, centered CNC milled two piece cylinder head with separate combustion chamber (anodised), incl. gasket set. Motor periphery should match performance increase and jets should be adjusted. Fits all Vespa PV/ET3/XL/XL2 models, except PK automatic. The crankcase must be modified to match the larger cylinder transfers. SIP-TIP: Main jet adjustment and new spark plugs are a must. Racing shaft with 20/20 or 24/25 end cone. Pay attention to length of connecting rod. Exhaust VSP Race, FRANZ or FALC, electronic ignition such as VESPATRONIC or PARMAKIT, carburetor 34 - 38 mm. Primary 2.54 - 2.34, round out with DRT toothed gears. The Parmakit W-Force cylinder is also available in a water cooled version. These W-Force LC kits have their upper three cooling ribs removed and are equipped with a H²O head. All kits are available with centered spark plug. Expect improved cooling, higher compression and optimal combustion chamber properties. Water cooled race Vespas attract a lot of attention at each custom show and every quarter mile race. Conclusion: Up till now, there haven't been many reliable products on the market till PARMAKIT opened up new dimensions with their kits. Aluminium/ 58/60 mm bore/ 5 transfers/ 135/144 cc's Aluminium cylinder, 51 mm stroke, 97 mm or 105 mm, direct intake, W-Force reed valve, VERTEX forged piston with 1.0 mm ductile cast piston ring, bi-conic gudgeon pin, 8 mm exhaust studs with 62 mm spacing distance and 36 mm exhaust diameter, 8x bolted centered, CNC milled two piece H²O cylinder head with separate combustion chamber (anodised), with centered spark plug, gasket set included. The motors peripheral parts should be upgraded, to match the increased performance, jets should be modified. Fits all Vespa PV/ET3/PK/XL/XL2 models, except PK automatic. The crankcase must be modified to match cylinder transfers. SIP-TIP: main jet adjustment and new spark plugs are a must. Racing shaft with 20/20 or 24/25 mm cone. Keep an eye on connecting rod length. Exhaust VSP Race, FRANZ or FALC, electronic ignition such as VESPATRONIC or PARMAKIT, 34 - 38 mm carburetor. Primary 2.54 - 2.34, round out with DRT toothed gears. Radiator, water pump, thermostat and hoses should not be forgotten.###57096.00 - AP (PARMAKIT)