Quote:
Originally Posted by wparsons
Woah woah woah...
VTEC does nothing for independence of intake and exhaust, even a SOHC non VTEC engine can have the intake and exhaust lobes altered independently when the cam is being ground.
Any DOHC engine can adjust the cam phasing between intake and exhaust, if it doesn't have variable valve timing you do this manually with adjustable cam sprockets.
Our engines do have independent variable valve timing on the intake and exhaust cams, so the ECU can (and does) adjust them independently.
What VTEC does do that we can't do is give two different cam profiles for different lift and duration. It lets you run a very different grind for higher RPM use than the low RPM grind, that's why they can run much more aggressive cams and still be very streetable. I don't doubt that an FA20 could make more power than a K20, but the K20 will be way more civilized at low revs.
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I do. Bolt-ons and cams and i'm at 250 whp. I'm making more than the car in this thread with a turbo AND cams and a ported head... all motor.
The FA20 has a long way to go before we see what it can really do, but i'm not so sure it will ever reach that level, mostly due to drivetrain losses.
perhaps measured at the motor it could make similar power though.
Anyways, i was looking forward to perhaps seeing an n/a dyno up in here. Unfortunate it's not here just yet
