| 31. | $200 for piston rings and main bearings.
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| 32. | Perfect Circle makes piston and piston rings.
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| 33. | Since then, Federal-Mogul has made acquisitions that complement its production of piston rings, engine bearings and seals.
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| 34. | Piston rings are a major factor in identifying if an engine is two stroke or four stroke.
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| 35. | The overhead valves are driven by a gear driven camshaft . Each piston has five piston rings.
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| 36. | The intake ports are small enough to ensure that piston rings do not need to be pegged.
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| 37. | Sealed Power Corp . developed special chrome-plated piston rings for the engine that were blunted to prevent scuffing.
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| 38. | India Piston was established in 1949 . This company produces pistons, piston rings, piston pins and cylinder liners.
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| 39. | During use, the cylinder is subject to wear from the rubbing action of the piston rings and piston skirt.
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| 40. | The gap in the piston ring compresses to a few thousandths of an inch when inside the cylinder bore.
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