22-02-12, 04:02 PM 
		
	
	
		just bear in mind:
bus engine - revs to 2.5k max and last billion miles
grand prix engine - revs to 20k (or whatever) and lasts 1 or 2 races.
Higher rpm = shorter life.
	
	
	
	
	
bus engine - revs to 2.5k max and last billion miles
grand prix engine - revs to 20k (or whatever) and lasts 1 or 2 races.
Higher rpm = shorter life.

