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Full description: Why choose these housings?
The transition to the black crankcase after 2014 is not just a question of aesthetics:
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Superior machining quality: Carters are appared to manufacturing. This means that both halves are machined simultaneously so that the bearings housing is perfectly coaxial.
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Thermal dissipation: The specific black coating helps heat dissipation, now a more stable operating temperature for low engine.
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Structural reinforcements: Post-2014 versions benefited from competing feedback to strengthen zones of strong constraints, including engine supports and crankshaft bearings.
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Perfect sealing: The seal planes are surfaced with micrometric precision, ensuring a constant pre-compression and no leakage of oil or air.
💡 Michel's trick
"Attention guys, change a crankcase, it's the equivalent of an open-heart operation! We never buy one side of Carter: they are sold in pairs because they are machined together. If you mix a left side of a motor and a right side of another, your bearings will force and you will break everything in 10 minutes. My advice: Enjoy it for mounting new 6206 crankshafts and spis joints of high quality. And above all, uses a torque wrench to close the block, otherwise you risk to veiling the plan of seal!"
🎓 Tuto: assembly and recommendations
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Preparation: Clean the seal plans perfectly. Use a powerful degreaser to remove any trace of storage oil.
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Heating: To insert the bearings without stress, heat the baked housings or with a thermal stiffer (about 80-100 ° C). The bearing must fall into its accommodation without forcing.
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Seal: Apply a thin layer of high quality joint dough or use the original paper seal. Be careful not to obstruct the lubrication channels!
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Tightening: Tighten cross crankcase screws, in successive stages, to ensure that both halves are perfectly uniform.
✅ Compatibility
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Rotax 125 Max & Evo (Models after 2014)
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Rotax Junior, Mini, Micro Max (EVO Versions)
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Note: Compatible with EVO cylinders and old models (check the studs).
Note Magickart: This kit includes the Two half-cagres (right and left). Part 100% Origin Builder to ensure your technical compliance in competition.r
FR311.009
Specific References
The Full crankcase Rotax black (ref. 296161) Represents the internal chassis of your engine. Designed for versions Evo and the models produced after 2014, this pair of housings (right side and left side) has a high-strength black surface treatment. They are machined together in the factory to ensure perfect crankshaft alignment and transmission shafts, thus ensuring optimal performance and increased longevity.