EGIG 180 cc cylinder kit for Vespa Smallframe with 116 mm connecting rod
The EGIG 180 cc cylinder kit is the increased displacement and performance version of the 170 kit. With a 54 mm stroke and 116 mm connecting rod, the result is a very powerful smallframe engine that can produce well over 27 hp without any major modifications to the housing and can exceed the 30 hp mark with modifications and a large carburetor.
180 cc concept
54 mm stroke
Cast iron
Powerful
Direct or case intake
Technical data EGIG 180
Displacement: 180 ccm
Stroke: 54 mm
Connecting rod length: 116 mm
Bore: Ø 65 mm
Transfer port: 6 channels
Exhaust: one-piece, approx. 66 % of the bore
Timing: approx. 126° / 184°
Material: gray cast iron
Piston: 2 piston rings, piston shortened by approx. 0.8 mm
Intake: direct intake at the cylinder or via housing (diaphragm/rotary slide valve)
Stud distance intake manifold: 65 mm
Stud distance exhaust: 56 mm
Power: over 27 hp and around 25 Nm possible without milling work on the cylinder
With housing machining and 30 mm carburetor: 30 hp and more achievable
Oil recommendation: Mixed oil 1:33 (e.g. Motul 800)
Scope of delivery EGIG 180 cylinder kit
EGIG 180 cylinder
EGIG 180 cylinder head
Piston d65, shortened by approx. 0.8 mm, with accessories
Intake manifold gasket
Cap nuts M7 and spring washers
Screws for cylinder head and exhaust flange
Exhaust gasket
Cylinder base gaskets
Cylinder casting spacer 0.8 mm
Recommended accessories
EGIG 170/180 stud bolts
Shock absorber offset
Shock absorber extension
Cylinder cover spacer
Direct intake cover plate (for case intake)
Necessary modifications to the engine housing
Remove the housing edge at the cylinder base to approx. 2 mm as on the 170.
The crankshaft housing must be spindled for the EGIG 180 crankshaft.
No additional milling work necessary on the transfer ports.
Characteristics and power range
Thanks to the larger stroke of 54 mm and the longer 116 mm connecting rod, the EGIG 180 has a further significant increase in torque and peak power. The combination of 6 transfer ports and one-piece exhaust ensures a powerful bottom-end pull and a wide usable rev range. With the right exhaust and carburetor, outputs of up to and over 30 hp are realistic.
Carburetor and exhaust recommendation
A carburetor in the 28 to 30 mm range is recommended for the EGIG 180 in order to exploit its high potential. On the exhaust side, performance-oriented touring and sports systems work particularly well. As with the 170, the combination was tested with the EGIG Superbanana Sport, among others.
Cast iron for high reserves
EGIG also deliberately uses gray cast iron for the 180. The material is insensitive to temperature fluctuations and absorbs small tuning errors better than aluminum. Nevertheless, the following still applies: A jamming can permanently impair the cylinder, which is why careful tuning remains mandatory.
Compatible vehicles
Vespa 50 (V5A, V5B, various versions)
Vespa 90
Vespa Primavera 125 / VMA2
Vespa ET3 125
Vespa PK S / PK XL / PK XL2
All comparable smallframe engine housings with a suitable mount
FAQ EGIG 180
Yes. The crankshaft housing must be spindled for the EGIG 180 crankshaft. However, the transfer ports themselves do not need to be milled.
Without extensive machining, outputs of over 27 hp and around 25 Nm are possible. With housing machining and a 30 mm carburetor, 30 hp and more are realistic.
The kit is suitable for powerful touring setups and sporty engines that are intended to impress both on the country road and on the sprint track.
Legal notice:
All EGIG Performance articles and engines are intended for exhibition purposes only. Use on public roads and race tracks is prohibited. No liability is accepted for personal injury or damage to property.
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