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Cylinder -IMOLA 186 cc- Lambretta
Part no.:
8000003
Description
Bore 64 mm, stroke 58 mm, Nikasil coated aluminum cylinder.
Timing: Exhaust 178°, overflow 125°, intake - diaphragm controlled, advance 26.5°.
The layout from the Imola was based heavily on the TS1, so the diaphragm intake provides good low and mid range filling.
The Imolas offer enough meat at the exhaust and overflow sealing surfaces for further tuning measures is.
With a high revving exhaust like the KRP2 or KRP4 speeds over 120 km/h are possible.
Who likes it a little more comfortable, can change the characteristics of the cylinder by the selection of the exhaust. With the bgm Big Box or Big Box Sport, the whole thing goes more in the direction of touring, which means that longer gear ratios can also be driven. The whole thing then takes place at a moderate speed level.
Conclusion: Baby TS1, BUT it should definitely be measured the timing and you should be prepared for the fact that these may need to be adjusted. In addition, the combustion chamber volume of the head must be determined and possibly increased, so that one can build a reliable and touring-suitable engine here. Especially in the combination with 60 mm instead of 58 mm stroke, the compression can increase so much that it comes to a capital engine damage.
On the diagram you can see a nice tape of the Imola engine with 60 mm bgm crankshaft, 30 mm bgm PWK carburetor and the Jl3 exhaust. The reference run (red) is an Indian Stage4 engine (Sh22, Indian Big Bore exhaust).
Do you have questions about the diagram or the cylinder: lambretta@scooter-center.comAI-translation
Timing: Exhaust 178°, overflow 125°, intake - diaphragm controlled, advance 26.5°.
The layout from the Imola was based heavily on the TS1, so the diaphragm intake provides good low and mid range filling.
The Imolas offer enough meat at the exhaust and overflow sealing surfaces for further tuning measures is.
With a high revving exhaust like the KRP2 or KRP4 speeds over 120 km/h are possible.
Who likes it a little more comfortable, can change the characteristics of the cylinder by the selection of the exhaust. With the bgm Big Box or Big Box Sport, the whole thing goes more in the direction of touring, which means that longer gear ratios can also be driven. The whole thing then takes place at a moderate speed level.
Conclusion: Baby TS1, BUT it should definitely be measured the timing and you should be prepared for the fact that these may need to be adjusted. In addition, the combustion chamber volume of the head must be determined and possibly increased, so that one can build a reliable and touring-suitable engine here. Especially in the combination with 60 mm instead of 58 mm stroke, the compression can increase so much that it comes to a capital engine damage.
On the diagram you can see a nice tape of the Imola engine with 60 mm bgm crankshaft, 30 mm bgm PWK carburetor and the Jl3 exhaust. The reference run (red) is an Indian Stage4 engine (Sh22, Indian Big Bore exhaust).
Do you have questions about the diagram or the cylinder: lambretta@scooter-center.com
€698.99 *
incl. VAT plus shipping costs
Available immediately (delivery time 1-3 working days*)
P
For this item you get
fidelity point/s
| General | |
|---|---|
| performance class: | racing, sport |
| Gudgeon pins | |
| diameter: | 16 mm |
| Spark plugs | |
| thread type: | M14x1,25 |
| thread spark plug: | long |
| heat rating NGK: | B9ES |
| Cylinders | |
| displacement: | 186 cm³ |
| bore: | 64 mm |
| engine type: | 2-stroke |
| type of cooling: | air cooled |
| material: | aluminium |
| material piston cylinder surface: | Ceramic |
| cylinder head inclusive: | |
| cylinder gasket set inclusive: | |
| number of transfers (incl.boost ports): | 6 |
| number of boost ports: | 2 |
| shape exhaust port: | single port (oval) |
| exhaust mounting: | flange |
| flange type: | 2 studs |
| exhaust bolt pitch: | 60 mm |
| thread exhaust studs: | M7 |
| Crankshafts | |
| stroke: | 58 mm |
| Pistons | |
| number of piston rings: | 2 |
| production method piston: | cast |
| Piston rings | |
| piston ring type: | common ring |
| thickness rings: | 1,0mm |
| Circlips | |
| circlip type: | C-type |
| wire size of circlip: | 1,0mm |
| Cylinder heads | |
| cylinder head type: | one piece |
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