VTEC Basics...
#1
Honda-Tech Member
Thread Starter
Join Date: Sep 2007
Location: Cleburne, tx
Posts: 1,489
Likes: 0
Received 0 Likes
on
0 Posts
VTEC Basics...
ok, im new to hondas and this forum, so bare with me please, i searched for some topics, but non really had any info that i was looking for.....
my questions are, whats the difference between normal VTEC, and i-VTEC...
also, when VTEC hits, what exacly opens the valves more, does the cam drop... or does it have other lobes that it switche out when oil pressure gets higher?
i HAVE looked up VTEC info on wikipedia, but its in smart people language, and as u can tell, im an idiot... i need someone to dumb it out for me please
my questions are, whats the difference between normal VTEC, and i-VTEC...
also, when VTEC hits, what exacly opens the valves more, does the cam drop... or does it have other lobes that it switche out when oil pressure gets higher?
i HAVE looked up VTEC info on wikipedia, but its in smart people language, and as u can tell, im an idiot... i need someone to dumb it out for me please
#2
Honda-Tech Member
#6
Junior Member
Join Date: Sep 2004
Location: Schererville, IN, USA
Posts: 335
Likes: 0
Received 0 Likes
on
0 Posts
Re: (fatpride111)
I believe that the only difference is that the i-VTEC has a switchover point (RPM) that changes depending on engine load, when the regular VTEC switchover point is fixed.
#7
Honda-Tech Member
Thread Starter
Join Date: Sep 2007
Location: Cleburne, tx
Posts: 1,489
Likes: 0
Received 0 Likes
on
0 Posts
so meaning.... if u slowly rev up the motor, i-vtec wont engage, but if u floor it at a low rpm, itll engage at a low rpm as soon as it realizes u wanna go fast?
... and normal vtec will engage at say.... 5500 rpm either way if u floor it or get there slowly?
... and normal vtec will engage at say.... 5500 rpm either way if u floor it or get there slowly?
Trending Topics
#8
Junior Member
Join Date: Sep 2004
Location: Schererville, IN, USA
Posts: 335
Likes: 0
Received 0 Likes
on
0 Posts
Re: (fatpride111)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fatpride111 »</TD></TR><TR><TD CLASS="quote">so meaning.... if u slowly rev up the motor, i-vtec wont engage, but if u floor it at a low rpm, itll engage at a low rpm as soon as it realizes u wanna go fast?
... and normal vtec will engage at say.... 5500 rpm either way if u floor it or get there slowly?</TD></TR></TABLE>
You would be correct, except that the point on the regular VTEC is usually lower than 5500, it's 4800 on my D16 for example
My explanation is a bit brief though, it really does depend on a lot more than that, but in a nutshell that is what is going on. Once you learn a little more, go back and check out wikipedia.
... and normal vtec will engage at say.... 5500 rpm either way if u floor it or get there slowly?</TD></TR></TABLE>
You would be correct, except that the point on the regular VTEC is usually lower than 5500, it's 4800 on my D16 for example
My explanation is a bit brief though, it really does depend on a lot more than that, but in a nutshell that is what is going on. Once you learn a little more, go back and check out wikipedia.
#9
Honda-Tech Member
Re: (polishrifle)
#10
Honda-Tech Member
Re: (AWD Terror)
And in case you couldn't find this link in the one above....
http://asia.vtec.net/article/k20a/index.html
http://asia.vtec.net/article/k20a/index.html
#11
Honda-Tech Member
Join Date: Aug 2005
Location: ENGLEWOOD, FL, USA
Posts: 307
Likes: 0
Received 0 Likes
on
0 Posts
Re: VTEC Basics... (fatpride111)
The 'I' in Ivtec represents the ability of the cams to adjust the cam angle. Are you familiar with 'adjustable cam gears'? Well, Ivtec does this constantly as the ECU sees fit for the motor to do so. Generally this happens at higher RPM's. I hope this helps.
#13
Honda-Tech Member
Join Date: Apr 2007
Location: Phoenix, AZ, USA
Posts: 589
Likes: 0
Received 0 Likes
on
0 Posts
Re: VTEC Basics... (fatpride111)
http://www.youtube.com/watch?v=AcT_ZyY3F0k
That should help... This is an explanation of older VTEC technology. Meaning on D16, B16, and B18C motors...
http://www.youtube.com/watch?v=ECB5yFaWmVM
The second vid describes i-VTEC...
Modified by B18CivicEJ8 at 11:40 AM 9/20/2007
That should help... This is an explanation of older VTEC technology. Meaning on D16, B16, and B18C motors...
http://www.youtube.com/watch?v=ECB5yFaWmVM
The second vid describes i-VTEC...
Modified by B18CivicEJ8 at 11:40 AM 9/20/2007
Thread
Thread Starter
Forum
Replies
Last Post