Does the S2000 have 3 stage Vtec??
02-02-2003, 12:03 AM
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3 stage vtec only occurs in SOHC motors.
The term "stage" is sort of misleading, as it is referred to in different ways.
With 3 stage, only one intake valve opens in very low RPM, then two, then the VTEC lobe kicks in at high RPM increasing lift and duration.
With 2 stage, IMO, this is just normal VTEC as we see in most higher end Hondas: ITR, Prelude, GSR, S2000. The GSR in particular has a IAB that opens in unison with the VTEC lobe engaging.
With single stage, only the intake side has a VTEC mechanism. The exhaust side is unchanged throughout the RPM band.
In any case, who cares?
The term "stage" is sort of misleading, as it is referred to in different ways.
With 3 stage, only one intake valve opens in very low RPM, then two, then the VTEC lobe kicks in at high RPM increasing lift and duration.
With 2 stage, IMO, this is just normal VTEC as we see in most higher end Hondas: ITR, Prelude, GSR, S2000. The GSR in particular has a IAB that opens in unison with the VTEC lobe engaging.
With single stage, only the intake side has a VTEC mechanism. The exhaust side is unchanged throughout the RPM band.
In any case, who cares?
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