R18 VTEC, how does it work?

truflip · 12-28-2006, 02:33 PM

someone in this forum said in a post that the R18's VTEC and the Si's VTEC work in different ways..

he said that for the R18's the VTEC works for gas mileage, which means it works in the lower RPM ranges (under 3500RPM) and anywhere past that its just normal power..

the SI's is apparently in the high RPM ranges.. which makes sense to me.. cuz i THOUGHT thats how VTEC works...

so whats the deal with the R18's VTEC? heck do they even HAVE VTEC?
this has been bugging me so id like to know if u guys dont mind

MonkayMan17 · 12-28-2006, 02:42 PM

http://world.honda.com/HDTV/news/2005-4050705a/

http://asia.vtec.net/Engines/RiVTEC/index.html

http://asia.vtec.net/Engines/R18A/index.html

read young grasshopper read!

truflip · 12-28-2006, 03:35 PM

you rock!!!

cbizz · 12-28-2006, 04:08 PM

thanks for the links dude

MonkayMan17 · 12-28-2006, 04:23 PM

No prob guys, maybe some plus rep? hehe

Sion0x · 12-28-2006, 04:26 PM

+ rep for you :)

awesome links, great find

MonkayMan17 · 12-28-2006, 04:30 PM

the r-18 is an awesome lil engine, might as well know all about it : )

truflip · 12-28-2006, 04:41 PM

oops i repped u but i meant to write "nice links" not "nice rims" =\

Sion0x · 12-28-2006, 04:45 PM

man after reading all that, i feel like that engine has tons of potential.

MonkayMan17 · 12-28-2006, 04:54 PM

Quote:

Originally Posted by Sion0x

man after reading all that, i feel like that engine has tons of potential.

Exactly! makes you feel really good about that engine doesn't it :)

truflip · 12-28-2006, 04:56 PM

im all smiles.. still reading up on these articles! wooot =D

***sbigshot*** · 12-28-2006, 05:21 PM

wow ... awesome info! thanks for posting

I think this part said alot:

Quote:

Originally Posted by online article

i-VTEC on the R18A does not merge two torque/power curves together. Rather it switches the R18A engine between two entirely different modes, a normal 'power' mode and a fully docile 'economy' mode. Furthermore, when and whether to switch is not determined by simple parameters like engine rpm alone but rather by a combination of parameters, most importantly parameters used by the ECU to decide if it should 'open' VTEC or not. So the 'i' in i-VTEC actually stands for 'intelligent' meaning a new generation of SOHC-VTEC which responds to actual road and running conditions, rather than the traditional one which works more or less mainly on engine rpms alone. VTEC on the R18A does not always engage - if the proper conditions are not reached, the engine might never enage VTEC at all

sandeep108 · 12-29-2006, 03:00 AM

I had a first occasion to really put my r18 through the paces on hilly / congested partly open roads, and boy can this engine deliver when required, especially after 4k rpm.

Xtreme Thunder · 01-04-2007, 09:04 PM

Quote:

Originally Posted by MonkayMan17

http://world.honda.com/HDTV/news/2005-4050705a/

http://asia.vtec.net/Engines/RiVTEC/index.html

http://asia.vtec.net/Engines/R18A/index.html

read young grasshopper read!

Thank you! Read up on all of this awesome engineering and still amazes me!

I now have the "1.8L i-VTEC" video downloaded to my computer and have had to have watched it 20 times already!

(If anyone wants and can't wait for the thing to load on the original link, let me know and I can email or even host it in a 10.5MB Quicktime Movie)

12-28-2006, 02:33 PM	#1 (permalink)
truflip Senior Member Join Date: Dec 2006 Location: Ottawa, ON Age: 22 Posts: 7,618 iTrader: 11 / 100%	R18 VTEC, how does it work? someone in this forum said in a post that the R18's VTEC and the Si's VTEC work in different ways.. he said that for the R18's the VTEC works for gas mileage, which means it works in the lower RPM ranges (under 3500RPM) and anywhere past that its just normal power.. the SI's is apparently in the high RPM ranges.. which makes sense to me.. cuz i THOUGHT thats how VTEC works... so whats the deal with the R18's VTEC? heck do they even HAVE VTEC? this has been bugging me so id like to know if u guys dont mind

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Building the R18 on a Student’s Budget, One Year Mark	DSchrag	Driving Experience	25	08-22-2007 06:15 PM
Got my Si, pictures in Calgary	NiD4SPD	Introduction & Pictures	53	03-23-2007 10:16 PM
Official 1st Central/North FL Meet Thread!	maiku	South	158	12-11-2006 12:07 AM
Prison or Work?	GeezerSi	Water Cooler	13	11-16-2006 07:14 PM
R18 Vtec	DarkFlareon	Civic Coupe And Sedan	11	06-30-2006 05:03 AM

12-28-2006, 02:42 PM	#2 (permalink)
MonkayMan17 Senior Member Join Date: Nov 2006 Posts: 248 iTrader: 0 / 0%	http://world.honda.com/HDTV/news/2005-4050705a/ http://asia.vtec.net/Engines/RiVTEC/index.html http://asia.vtec.net/Engines/R18A/index.html read young grasshopper read!

12-28-2006, 03:35 PM	#3 (permalink)
truflip Senior Member Join Date: Dec 2006 Location: Ottawa, ON Age: 22 Posts: 7,618 iTrader: 11 / 100%	you rock!!!

12-28-2006, 04:08 PM	#4 (permalink)
cbizz Senior Member Join Date: Jun 2006 Location: Halifax N.S Canada Age: 28 Posts: 316 Chuck Mitchell iTrader: 1 / 100%	thanks for the links dude

12-28-2006, 04:23 PM	#5 (permalink)
MonkayMan17 Senior Member Join Date: Nov 2006 Posts: 248 iTrader: 0 / 0%	No prob guys, maybe some plus rep? hehe

12-28-2006, 04:26 PM	#6 (permalink)
Sion0x Senior Member Join Date: Dec 2006 Location: Tempe, AZ Age: 19 Posts: 373 Derek iTrader: 5 / 100%	+ rep for you :) awesome links, great find

12-28-2006, 04:30 PM	#7 (permalink)
MonkayMan17 Senior Member Join Date: Nov 2006 Posts: 248 iTrader: 0 / 0%	the r-18 is an awesome lil engine, might as well know all about it : )

12-28-2006, 04:41 PM	#8 (permalink)
truflip Senior Member Join Date: Dec 2006 Location: Ottawa, ON Age: 22 Posts: 7,618 iTrader: 11 / 100%	oops i repped u but i meant to write "nice links" not "nice rims" =\

12-28-2006, 04:45 PM	#9 (permalink)
Sion0x Senior Member Join Date: Dec 2006 Location: Tempe, AZ Age: 19 Posts: 373 Derek iTrader: 5 / 100%	man after reading all that, i feel like that engine has tons of potential.

12-28-2006, 04:56 PM	#11 (permalink)
truflip Senior Member Join Date: Dec 2006 Location: Ottawa, ON Age: 22 Posts: 7,618 iTrader: 11 / 100%	im all smiles.. still reading up on these articles! wooot =D

12-29-2006, 03:00 AM	#13 (permalink)
sandeep108 Senior Member Join Date: Aug 2006 Posts: 117 iTrader: 0 / 0%	I had a first occasion to really put my r18 through the paces on hilly / congested partly open roads, and boy can this engine deliver when required, especially after 4k rpm.