lceah Posted June 11, 2007 Share Posted June 11, 2007 i-vtec (i stands for intelligent): Valve lift and duration are still limited to distinct low and high rpm profiles, but the intake camshaft is now capable of advancing between 25 and 50 degrees (depending upon engine configuration) during operation. Phase changes are implemented by a computer controlled, oil driven adjustable cam gear. Phasing is determined by a combination of engine load and rpm, ranging from fully retarded at idle to maximum advance at full throttle and low rpm. The effect is further optimization of torque output, especially at low and midrange RPM. -from reference Quote Link to comment Share on other sites More sharing options...
TS John Posted July 18, 2007 Share Posted July 18, 2007 I dunno if any of you guys (and girls) are Road & Track readers but there's a great article on valve timing adjustments in all it's various forms in August's issue. Really interesting stuff. I highly recommend you try to find a copy to read that article. Plus there's a nifty little bit about some secret Honda Collection in Cali that I wanna see really bad but isn't open to the public. Quote Link to comment Share on other sites More sharing options...
chrisz232 Posted April 2, 2008 Share Posted April 2, 2008 vtec engages when racing or doging ur car at 4500 and when casual 5000 my buddy owns a 95 teg i am in all the time. Quote Link to comment Share on other sites More sharing options...
Hatch92 Posted April 2, 2008 Share Posted April 2, 2008 dude this thread was dead, and WTF are you talking about? Quote Link to comment Share on other sites More sharing options...
Humphries Posted June 4, 2008 Share Posted June 4, 2008 Vtech is complicated. Quote Link to comment Share on other sites More sharing options...
Kastigir Posted June 4, 2008 Share Posted June 4, 2008 It works with pixie dust and unicorn farts. Quote Link to comment Share on other sites More sharing options...
BrIaN EG2 Posted June 14, 2008 Share Posted June 14, 2008 VTEC = variable valve timing with lift electric control (dont know if it was stated earlier in the thread, im a little toolazy to look today) oh and i used to have a HUGE book on honda when i was younger (i started studying honda when i was about 10) and i still have it, its back home, it has EVERYTHING about honda engines... i learned alot from that book, i need to get a mitsubishi book now Quote Link to comment Share on other sites More sharing options...
CleanGSR Posted June 15, 2008 Author Share Posted June 15, 2008 VTEC = variable valve timing with lift electric control (dont know if it was stated earlier in the thread, im a little toolazy to look today) oh and i used to have a HUGE book on honda when i was younger (i started studying honda when i was about 10) and i still have it, its back home, it has EVERYTHING about honda engines... i learned alot from that book, i need to get a mitsubishi book now Yep...it was stated in the 1st and 2nd posts in this thread....hopefully this bump will realize that adding an "H" at the end stands for "for Homosexuals" VTECH = Variable Valve Timeing with Left Electronic Control for Homosexuals" Quote Link to comment Share on other sites More sharing options...
Ben. Posted June 15, 2008 Share Posted June 15, 2008 VTEC = variable valve timing with lift electric control (dont know if it was stated earlier in the thread, im a little toolazy to look today) oh and i used to have a HUGE book on honda when i was younger (i started studying honda when i was about 10) and i still have it, its back home, it has EVERYTHING about honda engines... i learned alot from that book, i need to get a mitsubishi book now See crank. See crank walk. /end posting. Quote Link to comment Share on other sites More sharing options...
semperfijjd Posted July 28, 2009 Share Posted July 28, 2009 go to utube and search how vtec works and there is a very good video about it. Quote Link to comment Share on other sites More sharing options...
Tubbith Posted July 28, 2009 Share Posted July 28, 2009 Back from the dead.....again. Quote Link to comment Share on other sites More sharing options...
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