Civic 1.8L iVTEC chart - Page 3 - 8th Generation Honda Civic Forum
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Old 08-23-2007, 10:46 PM   1 links from elsewhere to this Post. Click to view. #41 (permalink)
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wow I haven't seen this for a while... anyways to koreth

have you never drove the speed limit? I can stay under 3k rpm cruising in the city as much as I want. I am not driving slow, I just don't feel the need to keep it in a low gear revving high the whole way home.

However, you drive how you like. But just cause you have an Si doesn't mean you're the only cool one
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Old 08-24-2007, 11:25 AM   #42 (permalink)
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i bought the LX to drive normal or just for pt A to B with style
I have a 92x for my other fun
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Old 08-24-2007, 11:54 AM   #43 (permalink)
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Quote:
Originally Posted by tpofa-07LX
I got my car yesterday and have driven around 50 miles but am already a 2/3 of a tank(1/3 of the bars on the fuel gauge used up). Should I keep it below 3500rpm in order to get better gas mileage? I have a manual and have been shifting at higher rpms and enjoying the new car though..
Yes shift it at lower rpm. You are breaking your car in, drive nicely, or you'll have all kinds of problem later.
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Old 08-24-2007, 01:16 PM   #44 (permalink)
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Quote:
Originally Posted by yuning83
Yes shift it at lower rpm. You are breaking your car in, drive nicely, or you'll have all kinds of problem later.
Myth... Drive the car hard for your break it.
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Old 08-24-2007, 01:26 PM   #45 (permalink)
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Quote:
Originally Posted by mO 64 StAnG 06
Myth... Drive the car hard for your break it.
then would it be plausible to say that driving the car easy for the first XXXX amount of miles for break in is a myth as well?

I'm not questioning YOU, just in general.
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Old 08-24-2007, 05:51 PM   #46 (permalink)
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Quote:
Originally Posted by yuning83
Yes shift it at lower rpm. You are breaking your car in, drive nicely, or you'll have all kinds of problem later.
Dealer told me there is no break in period any more. I have started shifting at lower rpms though, still getting used to my first manual. Got it down pat now!
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Old 08-24-2007, 07:48 PM   #47 (permalink)
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break in period is at least 600 miles= no full throttle shifts no hard starts, dealerships are not always right, get a second or third opinion -2cent
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Old 09-07-2007, 06:22 PM   #48 (permalink)
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Many many other modern engines have a break in period. No high RPM and no prolonged periods using cruise control. Vary RPM and use a good portion of the RPM range but not redline.
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Old 09-08-2007, 12:33 AM   #49 (permalink)
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Yay! R18 club!
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Old 09-30-2007, 01:26 AM   #50 (permalink)
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I liked that video It was informative.
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Old 10-25-2007, 12:53 PM   #51 (permalink)
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i just found this and its great info...thx!!
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Old 12-27-2007, 02:36 PM   #52 (permalink)
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Note that the higher of the two runs was performed in 3rd gear. The lower was in 4th gear. Power and torque at the hubs indicate that this engine is producing more like 150-155 hp and 135-138 lbs-ft of torque at the engine. Also note that the power peaks and torque peaks correspond almost perfectly with the advertised peaks of 4300 rpm for torque and 6300 rpm for horsepower.

We also noted that the engine would occasionally knock at low rpms, indicating that it might indeed benefit from higher octane gasoline (all testing was done on whatever Honda delivered it to us with - probably 87 octane). Power was somewhat soft below 2000 rpm. We feel that this was probably due to the new small valve opening mode on the R18 designed for optimal fuel economy. Once you got to full throttle and above 2000 rpm, however, performance was brisk.

We have heard some doubt expressed about these numbers, so we thought we would see how the dyno results stacked up with acceleration testing. Our 0-60 testing returned consistent times in the 8.2-8.5 second range. Average acceleration in 1st gear was 0.47g with a 5000 rpm launch. From 4500 to 7000 rpm (the rpm range we accelerated through with a hard launch in first gear), average torque is about 113.5 lbs-ft at the hubs. From past experience, for wheels and tires of this size, a loss of 5-6 lbs-ft of torque is expected from hub to contact patch.

An average of 107.5 lbs-ft of torque, multiplied by a first gear ratio of 3.143 and a final drive ratio of 4.294 gives us a total torque at the axles of 1485 lbs-ft. The tire size of 205/55/16 gives us a tire radius of 1.04 ft. This means an average thrust of 1440 lbs in 1st gear. Our total weight for the car (2705 lbs) plus driver and equipment (230 lbs) was 2940 lbs. This amounts to an maximum average acceleration in first gear of 1450/2940 = 0.49g. While this is slightly higher than what was recorded, launches were performed with a great deal of wheelspin to keep the engine speed up, accounting for some error.
I love the math formulas they did. So much better to look at the average thrust some some single peak number.
http://video.vtec.net/06/civic/06ex_dyno.wmv

Last edited by ryker; 12-27-2007 at 02:52 PM.
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Old 01-19-2008, 09:15 PM   #53 (permalink)
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ok I give up does R18 mean anything? Or is it just a version?
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Old 01-19-2008, 09:17 PM   #54 (permalink)
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the 18 is cuz its a 1.8 liter. and its an r-series. totally guessed on the r part.
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Old 02-13-2008, 11:28 AM   #55 (permalink)
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Does the R18 also like the Si? Or is it not build for that?
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Old 02-13-2008, 10:25 PM   #56 (permalink)
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Quote:
Originally Posted by CivicSi907 View Post
Does the R18 also like the Si? Or is it not build for that?
Everything is answered in the first post of this thread

Short answer: No. R18 is for fuel economy
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Old 02-23-2008, 11:01 AM   #57 (permalink)
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omg this helped so much...when i heard people say it switches cams...i thought they ment we had 2 different overhead cams in our k20...and i was thinking that this was a DAMN awesome tech....but now i know what it really is...and it still is an awesome tech...
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Old 03-19-2008, 12:29 PM   #58 (permalink)
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i-vtec isnt hit depending on rpm level rather drive conditions so r18 vtec opens up depending on economy drive and driving habits stop and go vs highway
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Old 03-19-2008, 03:08 PM   #59 (permalink)
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To add to the confusion, my '06 Pilot is i-vtec too, but the "i" (intelligent) part is that it runs on 3 of the 6 cylinders when the power is not needed. A green "ECO" lights up in the instrument panel when in 3 cylinder "economy" mode.
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Old 03-22-2008, 05:58 PM   #60 (permalink)
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from what I understand the accord and oddsy may due that too on certian modles, I belive that the pilot also has convetional vtec to right? is it still a c35?
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LinkBack to this Thread: http://www.8thcivic.com/forums/civic-coupe-sedan/8370-civic-1-8l-ivtec-chart.html
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Civic 1.8L iVTEC chart - 8th Generation Honda Civic Forum This thread Refback 12-23-2007 09:09 PM
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