Richierich
Having swapped from Pet to Diesel I can see the benfit's of both. Love the punch in the back of the TD but constantly get annoyed with the short reve range. 8500 rpm twin cam TDi please.
However Richierich, to the difference you find in
vtec's - 2.2 ATR. Twin cam
VTEC.
VTEC stage shifts to high lift cams with huge opening lifts & angles - basically racing engine which would be lumpy as hell at low RPM. 1.8 Civic is
iVTEC. more about changing opening timing and shuting down valves to acheive more economical driving when not under power and aslight power up when pushed - also single cam not twin cam.
VTEC = Variable Valve Timing and Lift Electronic Control. Same technical philosophy applied in a totally different way to the 2 different engines.
Also point of note - many others have 'variable valve timing where they vary the timing by adjusting the offset between the inlet and outlet cams/ followers easy peasy method. Honda have the lift issue as well where engine oil pressure is used via a solenoid to change the cam lobe which the follows are matched to. mucho different system.
Sorry for the egg sucking
