Difficult to say. Overheating running with no cooling for all but the shortest amount of time can definitely cause major problems to say the least. It just depends on how hot things got. If a bearing sleeve melts though time for a full engine rebuild (which I'm assuming would prefer to be avoided and isn't likely worth the money) Did your temperature gauge not show it over heating? Haven't owned a cubic. Catastrophic coolant leak somewhere? A hose break?