Civic 1.8L iVTEC chart - 8th Generation Honda Civic Forum
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Old 06-01-2006, 12:12 PM   #1 (permalink)
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Thumbs up Civic 1.8L iVTEC chart

A visual from www.japanesecarfans.com / www.worldcarfans.com showing when iVTEC in the 1.8L engine kicks in is HERE.

Update: VTEC as implimented in the R18 is actually sorta "backwards" from that of the K20Z. That is, the R18 is in VTEC at low loads, and kicks out of it under higher loads.

Don't take my word for it though, see:
Asian 8G Civic R18A Engine Tech Overview

Regards,
Glenn in CT


Last edited by GlennS; 01-12-2007 at 02:32 PM.
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Old 06-01-2006, 12:57 PM   #2 (permalink)
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someone post the pic, my pos comp wont load it

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Old 06-01-2006, 12:59 PM   #3 (permalink)
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It won't load on mine either, it says "Service Unavailable"
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Old 06-01-2006, 01:04 PM   #4 (permalink)
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Driving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivicDriving91LX just slammed it into 5th gear on 8thcivic
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Old 06-01-2006, 01:06 PM   #5 (permalink)
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cool thanks for the info
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Old 06-01-2006, 01:08 PM   #6 (permalink)
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Looks like their site went down right after I posted the link. It's not a perfect world, so just give it some time and I'm sure the site will come back on line. <edit> There, the site is back up now. All set. -Glenn
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Old 06-01-2006, 01:13 PM   #7 (permalink)
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damn that site is awesome, i didnt even know about some of those honda cars...+1
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Old 06-01-2006, 02:05 PM   #8 (permalink)
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Cool stuff !
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Old 06-01-2006, 03:04 PM   #9 (permalink)
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Awesome...thanks for the link! Those are some great cars on there.

I'm driving thru the twisties this weekend. I'll be sure to keep the revs above 3,500 rpm!
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Old 06-01-2006, 09:15 PM   #10 (permalink)
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Since I'm new to V-TEC, I'm trying to figure this "fuel economy cam" and "high output cam" thing. Since 1.8s only have one cam, how does it "kick in"? Are the lobes on it different at different places for what it needs to do based on load, acceleration, etc.?
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Old 06-01-2006, 10:04 PM   #11 (permalink)
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http://world.honda.com/CIVIC/

That link will take you to a Civic section. Scroll down to the bottom of the page. There yopu will find more specs on the 1.8, the chart posted here and a video highlighting the r1.8's tech. I think Honda posted this in july of 05.
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Old 06-01-2006, 11:02 PM   #12 (permalink)
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Here's a movie from that site on the 1.8L engine. It makes me so proud of my R18.

http://world.honda.com/HDTV/news/200...tvplayerNW.swf
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Old 06-01-2006, 11:32 PM   #13 (permalink)
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so the faster i drive the more gas i will save?
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Old 06-02-2006, 01:08 AM   #14 (permalink)
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umm, no.

keep it under 3500 rpm because thats when the motor tries to limit pumping losses. less power, but more economy
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Old 06-02-2006, 08:43 AM   #15 (permalink)
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Quote:
Originally Posted by 8thgenuser
Here's a movie from that site on the 1.8L engine. It makes me so proud of my R18.

http://world.honda.com/HDTV/news/200...tvplayerNW.swf

I almost cried when i watched that lol

kinda cool to know theres so much put into our engine
"The R18 is leading the class in I-VTEC technology"

makes me afraid to modify the damn thing lol
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Old 06-02-2006, 12:45 PM   #16 (permalink)
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Quote:
Originally Posted by [IVI]
Since I'm new to V-TEC, I'm trying to figure this "fuel economy cam" and "high output cam" thing. Since 1.8s only have one cam, how does it "kick in"? Are the lobes on it different at different places for what it needs to do based on load, acceleration, etc.?
The Honda "movie" others referred to is excellent.

Here's the concept put another way (credit to www.japanesecarfans.com)...



Regards,
Glenn
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Old 06-23-2006, 10:52 AM   #17 (permalink)
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Can someone sticky this?
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Old 07-25-2006, 12:49 PM   #18 (permalink)
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Honda has a video on the Web showing the internal operation of the new 1.8L iVTEC as in the 2006 (non-Si) Civics, here:

How iVTEC works in the R18 motor
Click on the "Watch the movie" link on the right side of the press release.

Regards,
Glenn in CT

<edit> (Oppsss, someone already posted a link to this. Sorry. --Glenn)
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Old 09-21-2006, 08:42 PM   #19 (permalink)
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hoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12'shoanger should be doing the 1/4 Mile in the 12's
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I, for one have never hit VTEC in our R18's... maybe I don't know how or I'm supposed to be doign something in particular... maybe someone could tell me how LOL
i'm pretty anal about going over 3k RPM's in any gear unless the person in front of me is driving insanely slow and accelerating at a ridiculously slow rate then i gotta bring it up momentarily. maybe thats why i haven't gotten it..
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Old 09-25-2006, 05:02 PM   #20 (permalink)
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seems pretty simple, VTEC kicks in at 3500 rpm, you drive below 3000 rpm... which part of this is unclear?

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Civic 1.8L iVTEC chart - 8th Generation Honda Civic Forum This thread Refback 12-23-2007 08:09 PM
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