your right on people wanting to "by-pass" VTEC to make more power but they do that for a smoother power curve since the VTEC cams were designed to allow for moderate power at the lower rpm's for better fuel consumption.
I thought the purpose of VTEC eliminator cams was to reduce some of the weight from the valve train, to make additional power than stock, and to take advantage of the better flowing (stock) VTEC head?
the way i look at it is that if your not seriously competing in drag racing then you shouldnt worry too much about getting a very quick spool. if your turbo takes to lets say 6k to reach full boost then for the first 5k rpms your now able to get traction.
:crazy: I'd hate to drive a car with a turbo that took so long to spool. You may have traction, but the other guy with a quicker spooling turbo, LSD, and grippy tires just pulled on ya.
I was told that when turboing a vtec engine you should bypass the vtec with the elimination cams in order to be able to get higher boost
Wrong. Cams determine lift, duration, and overlap. They don't create higher boost. In actuality aftermarket cams (such as VTEC eliminator cams) will create lower boost at high rpm.
This is due to more boost (charge density) filling the cylinders as opposed to building up against intake valves that close earlier with stock cams.
VTEC is actually helpful in making power in turbocharged applications. It gives you the best of both worlds. Good fuel economy down low and great power up top. The "big lobe" on a VTEC camshaft would basically be a full race cam for other cars.
If you put VTEC eliminator cams in your motor it wouldn't even idle at stock. However if you are happy with a 3000rpm idle.......
this sounds right to me, on the basis that it would be eisier to control fuel and boost without the sudden amount of air and fuel produced from VTEC
VTEC doesn't produce "air and fuel".
with no VTEC you would get a better power curve with better bottom end..
If the world is such a better place without VTEC, then why did Honda create it? :crazy:
saying that you could produce more boost at lower rpm's with the bigger cam
Wrong. The rpm at which a turbo spools (aka makes boost) is determined by trim of the compressor and turbine wheels, compressor and turbine housing a/r size, etc.
Food for thought, Nissan has a vehicle in Japan called the X-Trail. It has an SR20VET engine that produces 280hp. It basically has a variable valve timing system that is similar to Honda's "I-Vtec" with a turbo. If variable valve timing was so bad why did Nissan choose to equip a vehicle with this from the factory.
SICK_BOOST,
Do yourself a favor and learn how VTEC works, what it does, and the inner workings of the internal combustion engine before you attempt to go turbo. You will save yourself money in the long run.
Regards
Gregory
