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They all have the potential to crack. 3.4 and 3.6 motors are likely to be seeing more of this as the mileage racks up, as the few that we've measured the bores on all show deformation across the thrust axis. As the cylinders become more and more oval, the ductility limit of the metal will be reached sooner or later, and the sleeve will crack. 2.5 and 3.2 motors have the thickest sleeves, but even those have had liner failures.
The only motor that hasn't seen a liner failure yet is the M97 3.8.
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Hybrid Mode
