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Old 21 Dec 2010, 05:31 am
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Default Does a vtech engine drives smoother than a regular engine for Honda cars?

What is the difference between a vtech engine and any other or regular engines??
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Old 21 Dec 2010, 06:01 am
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VTEC refers to the variable cam timing in the head(s). I don't think there is anything inherently "smoother" about a VTEC vs non-VTEC engine, it is just technology to get a little more power out of the same size engine.

Basically it switches to a more aggressive cam profile higher up in the RPM range to help the engine take in more air, which it can then burn with more fuel for more power.
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Old 21 Dec 2010, 06:16 am
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Far from it, vtec is an on/off variable valve timing, that changes dramatically once you hit a certain RPM.

Try it in a type r integra, you'll have a ball.
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Old 21 Dec 2010, 06:31 am
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VTEC is a fuel economy device, nothing more. It was Honda's way of taking their race engines and making them easier to drive on the street. Otherwise, the most powerful Honda car would have 160hp and about 12ft-lb of torque.

Aside from the sarcasm, this is inherently true. VTEC was developed because Honda could make decent power out of their 4 cylinder engines, but they requried motorcycle like RPMs, often revving to 8000, 9000 rpm or higher, and the camshafts and parts needed to turn these engine speeds made idling at normal speeds (600-750rpm) and low engine speeds virtually impossible, as these high RPM engines idled around 1500rpm or higher, and because of that, driveability suffered on the street, and fuel economy was awful. So, Honda invented the VTEC system which basically incorporates multiple camshaft profiles on a single camshaft, and the ability to change from one profile to another based on engine RPM and load. This allowed Honda to get small displacement engines to idle well, have some low end torque, and get good fuel economy when driven normally, and still be able to make a respectable amount of power at astronomical RPM which is traditional Honda. Check out for an elaborate description of how VTEC works.
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Old 21 Dec 2010, 06:46 am
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VTEC, not vtech, vtech makes toys and phones
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