Originally posted by 90TGP
Please tell me what is so God like about VVT?
You get an extra cam which changes the intake and exhaust valve timing after reaching a certain rpm. Everyone doesn't want to floor their car all the time just to get some power from their motor during daily driving. That's why GM still uses OHV motors. It's cheap to mass produce and it's proven through time that it's reliable and gives power through the whole power band, just not at the peak like VTEC does.
Just expressing my opinion, but I'd rather have a simple pushrod motor that delivers power throughout the whole power band instead of an OHC motor giving power at the top [But I wouldn't turn down a LT5, 2JZGET, RB26DETT, 4G63, SR20DET, B18C5 motor(s).]
I'm all about engineering and thoughtfull design. Variable timing makes engines
efficient and economical. It is the way to go for motors in this day and age. Again, domestics can cut corners and get 25 mpg out of a Vette because they use transmissions with such large overdrive ratios the engine is barely running. Now, you put a closer ratio six speed to keep the engine exactly in the sweet spot at all times watch the fuel go down fast. I want to see more thought go in to GM engine designs. Same for Ford. They have been using variants of the same blueprints from 60 years ago, and that does not impress me one bit. HP/LTR is a key ratio that the domestics just don't seem to care about. We are getting off topic, so I'll steer us back. NSX is an example of what great
engineers can do. Corvette is an example of what
gearheads can do.