Engine capacity: 602ccm. Engine: M28, R6, 627. Compression 8,5:1. Inclusive Piston rings. Piston pin: 20 x 63,5mm. High-quality reproduction from the European Union.
Engine capacity: 602ccm. Engine: M28, R6, 627. Compression 9:1 (32HP). Inclusive Piston rings. Piston pin: 20 x 63,5mm. High-quality reproduction from the European Union.
m bore. Improved version with 2 steel rings! The benefits are: Higher running performance, resistant, improves adaptation to the liner, less friction, reduction of the oil consumption!
manufacturer! Measurements: 1,5 + 2.0 + 4,0mm
the original tools and with the original materials (this factory produce the 2CV for the South American market). Attention, there are also cheaper crankshafts from China, but we do not offer them for quality reasons.
completely: 15,6mm.
pistons + liners with compression ratio 8.5:1. New cylinder head left + right (incl. valves and rocker arms). Engine gasket set with oil seals, oil filler neck, oil filter. The crankshaft and camshaft are overdimensioned and can normally be used for a running performance of 500,000 km without any problems.
pistons + liners with compression ratio 9:1. New cylinder head left + right (incl. valves and rocker arms). Engine gasket set with oil seals, oil filler neck, oil filter. The crankshaft and camshaft are overdimensioned and can normally be used for a running performance of 500,000 km without any problems.
compensate the tooth flank play! Suitable for Citroen 2CV6, AK, ACDY, Dyane, Mehari, AMI. Or. No. A122-98. Diameter: 10.5mm. Length: 21mm.
could find a stock, with supported over 400 original camshafts. These are now in our existence.
diameter: 22,1mm, height length: 25mm
length: 25mm. Original No. 75420101
per piece. Note: Flywheel screws are necked-down bolts and should be always changed, if it released.
2CV. Inside diameter: 12mm, outside diameter: 18mm, height: 18mm.
for Citroen 2CV4 + 2CV6, up to year of construction 02/1972. Design = needle bearing. Inner diameter: 12mm, outer diameter: 18mm, height: 10mm. Or. No. ZC9620 322U
for Citroen 2CV6, from year of construction 03/1973 to 1990. design = needle bearing. Inner diameter: 12mm, outer diameter: 18mm, height: 16mm. Or. No. AM9121 100L
approx. 12kg. Also suitable for Citroen Dyane, AK, AMI. All 602cc engines with front drum brake. Or. No. AY8312-000.
Citroen for 2CV6. Size: 11,9x18x4mm. Or. No. 95495074. Made in Germany.
Citroen for 2CV6. Size: 12x18x3mm. Or. No. 7903078053. Made in Germany.
d reproduction. 2CV after 1967.
replacement on an electronic ignition.
Yes, the situation is similar for the Dyane, Ami 6, and Ami 8: engine displacement alone is not sufficient to determine the model with certainty. The decisive factors are always the engine type, engine plate, production year, carburetor configuration, and technical specifications.
Especially with the 425 cm³, 435 cm³, and 602 cm³ engines, there are significant differences in the pistons and cylinders, crankshaft, camshaft, compression ratio, carburetor, clutch, and ignition system.
| Model | Typical engine specifications | Displacement | Bore × Stroke | Key Features |
|---|---|---|---|---|
| Early Dyane model / Dyane 3 | 425 cc | 425 cm³ | 66 × 62 mm | Technically similar to early 2CV engines, but tuned differently depending on the production period |
| Dyane 4 | A79/1 / AYA2 | 435 cm³ | 68.5 × 59 mm | Not simply a bored-out 425; different stroke and different crankshaft |
| Dyane 6 | M4 / M28 / AM2 depending on production year | 602 cm³ | 74 × 70 mm | Early and later versions differ in tuning and components |
| Ami 6 | M4 / AM | 602 cm³ | 74 × 70 mm | Early 602-cc engine, specially developed for the Ami 6 |
| Ami 8 | M28 / AM2 | 602 cc | 74 × 70 mm | Further-developed 602-cc version with different tuning than early Ami 6 engines |
The Dyane was built with different engines depending on the model. Early models had a 425 cc engine, the Dyane 4 was equipped with a 435 cc engine, and the Dyane 6 came with a 602 cc engine.
Early Dyane models use the 425 cc engine with a 66 mm bore and 62 mm stroke. These engines generally belong to the A-model engine family, but are not automatically identical to every other 425 cc engine.
Differences may exist in the following areas, among others:
Therefore, a 425-cc Dyane engine should always be checked based on the engine plate and the specific model.
The Dyane 4 is typically equipped with the 435-cc engine. This engine has a 68.5-mm bore and a 59-mm stroke.
Important: The 435 is not simply a bored-out 425. The 425-cc engine has a 62 mm stroke, whereas the 435-cc engine has only a 59 mm stroke. As a result, the crankshaft, piston, and cylinder differ significantly.
When selecting replacement parts, this means that the piston, cylinder, and crankshaft must always match the specific engine model.
The Dyane 6 was equipped with a 602-cc engine featuring a 74-mm bore and a 70-mm stroke. Despite having the same displacement, not all 602-cc engines are identical.
Depending on the year of manufacture and model, the following may differ:
A Dyane 6 should therefore not be identified solely by its displacement. The exact engine code is always decisive.
The Ami 6 was one of the early A-series models with a 602-cc engine. This engine was designed to handle the Ami 6’s higher vehicle weight and different driving characteristics.
Typical for the Ami 6 are early M4 or AM engines with:
| Feature | Specification |
|---|---|
| Displacement | 602 cc |
| Bore | 74 mm |
| Stroke | 70 mm |
| Type | Air-cooled two-cylinder boxer engine |
| Character | Early 602-cc configuration |
The Ami 6 engine should not be equated across the board with later 602-cc engines from the Ami 8, Dyane 6, or 2CV6. The exact engine identification is particularly important for the carburetor, intake, exhaust, ignition, clutch, and gasket sets.
The Ami 8 was also offered with a 602-cc engine, but mostly with further-developed engine variants from the M28 or AM2 family.
Compared to early Ami 6 engines, the tuning was further developed. The Ami 8 is therefore technically closer to later 602-cc A-series models than the early Ami 6.
Nevertheless, the same applies here: An Ami 8 engine is not automatically identical to a 2CV6, Dyane 6, AK400, or Acadiane engine. Many basic specifications are the same, but details regarding tuning and components may differ.
425-cc engines use 66-mm pistons and cylinders. This version is paired with a crankshaft having a 62-mm stroke.
435-cc engines use 68.5-mm pistons and cylinders. This version is designed for a crankshaft with a 59-mm stroke.
A combination with the wrong crankshaft or mismatched pistons is technically incorrect.
602-cc engines use 74-mm pistons and cylinders with a 70-mm stroke. However, a distinction should be made between early M4/AM engines and later M28/AM2 versions.
| Stroke | Related engines | Meaning |
|---|---|---|
| 62 mm | 425 cc | Typical 425-cc crankshaft |
| 59 mm | 435 cm³ | Special 435-cc crankshaft |
| 70 mm | 602 cc | Base stroke of the 602-cc engines |
425-cc and 435-cc engines are particularly often confused. Externally, they appear similar, but technically they differ significantly in bore and stroke.
The camshaft, together with compression, the carburetor, and the exhaust system, influences the engine’s characteristics.
In early 602-cc engines of the Ami 6, the focus is on a different power delivery than in later 602-cc engines in the Ami 8 or in later Dyane 6 models.
Therefore, camshafts should not be selected based solely on displacement. The exact engine code is crucial.
For an early Dyane with a 425 cc engine, you should carefully check which engine variant is installed. 425 cc does not automatically mean that all parts are identical to those in other 425 cc A-series models.
The Dyane 4 typically has the 435 cc engine. The key specifications are a 68.5 mm bore and a 59 mm stroke. The piston, cylinder, and crankshaft must be compatible with this version.
For the Dyane 6, the production year is crucial. Early and later 602-cc versions may differ in terms of carburetor, compression ratio, ignition, clutch, and tuning.
The Ami 6 is equipped with early 602-cc engines. These should not be equated with later 602-cc engines without verification. The engine type, carburetor, clutch design, and ignition are particularly important.
The Ami 8 features an advanced 602-cc engine. Many basic specifications correspond to later A-models, yet tuning and components may differ.
No. Depending on the version, the Dyane was available with 425 cc, 435 cc, and 602 cc engines. The model designation alone is therefore not sufficient for reliably identifying parts.
No. The Dyane 4 typically has a 435 cc engine. This engine differs from the 425 cc version due to a larger bore and shorter stroke.
No. Although both models use 602-cc engines, the designs differ. The Ami 6 has early 602-cc engines, while the Ami 8 uses later, more advanced versions.
Technically, many components are similar. However, classifying them based solely on displacement is too imprecise. The engine plate, carburetor, clutch, ignition, exhaust connections, and auxiliary units should be checked.
The most important factor is the engine plate on the engine block. After that, displacement, year of manufacture, and vehicle model should be taken into account.
For the Dyane, Ami 6, and Ami 8, the following applies: Displacement alone is not sufficient.
Depending on the model, the Dyane can have a displacement of 425 cm³, 435 cm³, or 602 cm³. The Ami 6 has early 602-cm³ engines, while the Ami 8 has later, more advanced 602-cm³ versions.
To ensure accurate part identification, always check the engine plate, bore, stroke, carburetor, compression ratio, production date, and attached components.
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