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Old 15 Aug 2007, 08:00 pm
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Default how do honda Vtec engines work, and what exactly is the difference?

im looking into getting an acura integra with the vtec engine.
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Old 15 Aug 2007, 08:05 pm
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a vtec is an engine made by honda to increase power after a certain rpm has been reached. what happens is there are four valves per cylinder in the vtec, during normal cruise and driving, only two valves per cylinder actually open up. during lets say, a race, when the revs are over 3500 rpm, the second set of valves open up, allowing for better exhaust flow, and better fuel and air flow, there by, producing more power.also, the vtech after some time, will start to smoke quite a bit.
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