S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

"Hitting VTEC"?

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Old Apr 1, 2002 | 03:28 PM
  #11  
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From: Transporter
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And technically VTEC is "off" most of the time at low revs, because the electromechanical solenoid that opens a valve to allow more oil pressure run through the system is not energized except at high RPM.

Hey tugz, you're "ALL RIGHT"
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Old Apr 1, 2002 | 05:39 PM
  #12  
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From: Findlay
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Originally posted by Station
VTEC isn't always on. It is simply a two-stage system. It does vary the timing, but not infinitely. The only Honda motors that are capable of that are the new i-VTEC motors, which in addition to the two-stage cam, alter the cam-phase infinitely. So VTEC actually does kick on at around 6000rpm, and when it does, the valve timing changes along with the valve lift.
By infinitely, do you mean at any point in the rpm range ? iVTEC's variable timing effects only the intake side and is variable only by +25 or -25 degrees. Also the iVTEC engine rotates clockwise, a first for fwd Hondas in the U.S.
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Old Apr 1, 2002 | 07:14 PM
  #13  
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From: Brooklyn
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I think I've got this pegged. What we call "VTECing" is the pin actuation that links several cam followers which follow lobes of different sizes. When you hit 6,000rpm the cam followers are linked, by this pin, to follow the lobe which will push the deepest and stay open the longest.

God I love this car.
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