Re: Durability opinions?
			 
			 
			
		
		
		
			
			The Toyota Prius hybrid power system uses the 4-banger as a generator. Since it operates at two rpms, the engineers made the block thinner that a conventional motive engine. They haven't been in use but a decade, but it is a practical demonstration of the difference in stress levels.
		 
		
		
		
		
		
		
		
		
	
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