ADVANCED VTEC
#13
Re: ADVANCED VTEC
Originally Posted by Jorsher
Robb - it said 3 years from then is when they'll try to have it in cars, which would mean sometime in 2009 (this year)
Despite the expected jokes about a vtec, continuously variable valve timing sounds sweet. Any idea how this advanced technology works, JD? Electronically actuated? Could be the end of cams...
Despite the expected jokes about a vtec, continuously variable valve timing sounds sweet. Any idea how this advanced technology works, JD? Electronically actuated? Could be the end of cams...
Buick invented continuously variable valve timing in the late 1920's. No new technology here, just a practical application.
#14
Re: ADVANCED VTEC
Originally Posted by Robb
I was being sarcastic. Im not buying any honda made after 99' :P
Buick invented continuously variable valve timing in the late 1920's. No new technology here, just a practical application.
Buick invented continuously variable valve timing in the late 1920's. No new technology here, just a practical application.
Obviously there were issues with it, or it was too complex, or else it would be used by every manufacturer today, like vtec-ish tech that's used by everyone.
I feel you on the "no new honda after 99" thing, although if they do the new CRX right, I may get one.
#17
Re: ADVANCED VTEC
Originally Posted by Jorsher
Yah, a single cam profile is efficient for the whole 8000-9000 rpm. Waste of time.
Last time I checked, you still spec your cams for the powerband/gearing you want to run.
For me at least, it is a waste of time.
#18
Re: ADVANCED VTEC
Originally Posted by Robb
Yeah never mind about airflow disruption during the switchover.
Last time I checked, you still spec your cams for the powerband/gearing you want to run.
For me at least, it is a waste of time.
Last time I checked, you still spec your cams for the powerband/gearing you want to run.
For me at least, it is a waste of time.
I get what you're saying, that you'll spec the cams for a specific RPM range that you'll be "performing" in, but multiple valve durations is still more efficient than one...
#19
Re: ADVANCED VTEC
Originally Posted by Jorsher
Airflow disruption for a fraction of a second?
I get what you're saying, that you'll spec the cams for a specific RPM range that you'll be "performing" in, but multiple valve durations is still more efficient than one...
I get what you're saying, that you'll spec the cams for a specific RPM range that you'll be "performing" in, but multiple valve durations is still more efficient than one...
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