not that much. you havent seen the difference between the dohc pistons and the sohc pistons. the dohc cam pistons have a bowl thats almost 1 cm deep and the sohc is basically flat all the way acress.
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If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.