| 11. | The engine has a four-valve head with splayed rocker arms to actuate the valves.
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| 12. | Low-friction, roller-bearing rocker arms are used to help reduce friction and improve engine efficiency.
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| 13. | Titanium is used for the valves and the rocker arms have a diamond-like coating.
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| 14. | Some overhead camshaft designs still have rocker arms; this facilitates adjustment of mechanical clearances.
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| 15. | Thus, the rocker arm geometry is stated to be over-arcing.
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| 16. | The rocker arms are constructed using metal injection molding.
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| 17. | Hydraulic lash adjusters mounted on the rocker arms are used to provide zero valve lash.
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| 18. | Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, slopes.
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| 19. | Every cylinder head has four overhead valves, which are activated by tappets, pushrods and rocker arms.
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| 20. | The pistons are resin-coated and lightweight aluminum material is used for the friction-reducing roller rocker arm.
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