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Old 08 Apr 2012, 12:31 pm
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Default What is a I VTEC or V TEC?

I literally know nothing about cars, however I'm about to get my first car (2000 Honda Civic SI). What does a I-VTEC/VTEC do? I know something about camshafts or something like that but I don't know what that is. Does it make the car more reliable, faster, etc? What is it. Please use simple terminology.















What the hell does a cam do then? I don't care what it stands for, what does it do performance wise. Is my car faster, will my car fly, does it float on water, what the hell does VTEC do?
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Old 08 Apr 2012, 12:47 pm
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Variable valve Timing and Electronic lift Control. Put simply, it's a method of directly altering the cam profile that valves "see", so that the optimum grind can be utilized at either high or low rpm.
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Old 08 Apr 2012, 01:20 pm
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Variable (valve) Timing and (lift) Electronic Control. The 'I' stands for intake, meaning the intake side is variable and the exhaust is a standard camshaft. Early VTEC systems simply activated a larger camshaft lobe at higher RPM. Having variable valve timing and lift allows better power throughout the RPM range.
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Old 08 Apr 2012, 01:31 pm
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ivtec is just for the intake. regular vtec is intake and exhaust if that makes sense. so with ivtec just the intake valves in the cylinder head open longer, in regular vtech both valves open longer. it doesn't make your car faster it just gives you more of the engines power at higher rpm. its kinda hard to explain but two cars with the same power one with vtec and one without will preform the same.































but really, you coulda jus did a google search.
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Old 08 Apr 2012, 01:46 pm
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It makes your car sound like a weed wacker or a f1 car depending on your exhaust.































































































thats it.
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Old 08 Apr 2012, 02:01 pm
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In terms you'll understand engines can be tuned for more power by altering the valve timing but that makes them feeble at low revs. So variable valve timing means the car idles well and runs nicely and economically at low speeds but is powerful at higher revs.
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