Roller lifters

Thursday, March 29, 2012
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In terms of circuit racing, the pushrod engine is most famously used in NASCAR competition; while some other race series allow all kinds of valve actuation, NASCAR mandates cam-in-block and overhead valve engine architecture. One aspect of valvetrain... read more
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Exhaust valve materials

Thursday, March 29, 2012
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The poppet valves of a four-stroke engine have an arduous life, and the current design trend of engine downsizing in production vehicles and several race series is likely to make their life more difficult still. With downsizing comes boosting, mainly... read more
Tags :  valvetrain
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