21. The early Repco engines produced up to, and featured new SOHC cylinder heads and iron cylinder liners . 22. XU10 blocks are made in cast iron, with bores machined directly in the block, without removable cylinder liners . 23. All models blocks are made, except XU10, in cast aluminium alloy with removable cast iron wet cylinder liners . 24. India Piston was established in 1949 . This company produces pistons, piston rings, piston pins and cylinder liners . 25. The eventual fix for engines destined for high-sulfur gasoline markets was revised cylinder liners in the aluminum block. 26. In May 2008, Aston Martin released a new design that used pressed cylinder liners instead of cast-in liners. 27. Primary problems included cylinder liner failure, fan drive problems and perpetual leaks due to vibration and badly routed pipework. 28. The cylinder liners are made of centrifugally cast iron, two rubber rings seal the liners off from the crankcase. 29. Because of the use of cylinder liners and bearing shells, the relative softness of aluminium is of no consequence. 30. RCV have developed a 125cc rotating cylinder liner engine, incorporating a rotating valve in the cylinder liner, for scooter applications.
