Gruppo Termico KAST GRV 132cc Ø 58mm e corsa 51mm Candela Laterale
Comes complete with:
Cylinder
Piston
Head
Reed valve pack
Intake manifold
Gasket series
Valve closing plate
TECHNICAL FEATURES
Conversion kit for Vespa small frame engines.
Cast iron cylinder aspirated to the cylinder.
Bore: diameter 58 mm
Stroke: 51mm
Displacement 132.37 cc
Phases Primary, secondary and front-exhaust transfers approximately 125°
Exhaust light phase approx. 175°
Double ring piston in aluminum alloy
Cast aluminum head
Chromed S10 cast iron segments
Steel pin
Recommended squish: 1.1mm ± 0.1mm
Cylinder studs: M7x150
Cylinder stud nut tightening: 14Nm
Head bolts: TCEI M6x30 (12Nm)
Paper cylinder gaskets (0.2÷0.3÷0.4÷0.5mm)
Aluminum carburetor manifold diameter 28 / 30 mm with elastic connection
Double cusp 8-petal aluminium reed valve pack with vulcanised coating, carbon slats
High quality silicone carburetor sleeve complete with stainless steel clamps
Stainless steel suction cover closing flange
Specific References
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Questions
| Bernhard on 26/07/2023 |
Question: is it neccesary to modify anything at the engine case (I guess the lip at the flywheel has to be cut) or the frame (V50 Spezial) for the intake? Regards, Bernhard 26/07/2023 |
Answer: the G-rv cylinder needs to cut the lip to fit. It is recommended to machine the crankase transfers port base to the cylinder. There's a lil small improvement, but not necessary, if you flatten the crankcase base and eliminate the transfer port lil lip that allows it to be mounted on the profile of the original base. Cut the crankcase lip, is enough to mount it. No modifications on frame for special-R-L-N models Soon will be available the mainfold for PK models 22/08/2023 |
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