Honda-Tech, Stage 3 VTEC

[USDM.LOVE]

Im SI_EH6_6 on Honda-Tech. This guy started this thread about stage 3 vtec, and we been making fun of it. Then we got pics of this guys dog and what he looks like when he is in the car during vtec. This is where I got my avatar from. There is a video at the end.

http://honda-tech.com/zerothread/2019092

Anyways the reason why im posting is beacause im bored and I thought you guy might like it.

[ILIKETODRIVE]

You do know there is 3-Stage VTEC, right? If you do, ignore the rest of this post. :)

If not...






RHDRicheeee has/had it in his RHD EK, it looks like this:

http://asia.vtec.net/article/d15b/ek3eng.jpg http://asia.vtec.net/article/d15b/ek3vtec.jpg

and works like this:

Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency. When the right foot gets more urgent and/or above 2500rpm, the upper pin gets actuated. This is the VTEC-E mechanism at work and the engine effectively enters into the '2nd stage'. Now D15B 3-stage works in 16V mode (both intake valves works from the same mild cam-lobe).

Stage 2 operates from around 2500rpm to 6000rpm. When the rpm exceeds 6000rpm, the VTEC mechanism activates the wild cam-lobe pushing the engine into the '3rd stage', the power stage. Now the engine gives us the full benefit of its 130ps potential !

The 3-stage VTEC D15B engine is used on the current EK-series JDM Civic/Civic Ferio VTi/Vi together with Honda's new Multimatic CVT transmission. Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher. Stage-3 may not always be activated. The Multimatic transmission has a selector for Economy, Drive, and Sports mode. In Economy mode for eg, the ECU operates with a max rpm of around 4800rpm even at Wide-Open-Throttle positions.

The essence of 3-stage VTEC is power AND economy implemented on a 1.5l SOHC PGM-Fi engine. Many people mistakes 3-stage VTEC as a "superior" evolution of the power oriented DOHC VTEC implementation, describing DOHC VTEC as "the older 2-stage VTEC" and implying an inferior relationship. This is totally wrong because DOHC VTEC is tuned purely for high specific output and sports/racing requirements. 3-stage VTEC is in truth an evolution of SOHC VTEC and VTEC-E, merging the two implementations into one.

[USDM.LOVE]

You do know there is 3-Stage VTEC, right? If you do, ignore the rest of this post. :)

If not...






RHDRicheeee has/had it in his RHD EK, it looks like this:

http://asia.vtec.net/article/d15b/ek3eng.jpg http://asia.vtec.net/article/d15b/ek3vtec.jpg

and works like this:

Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency. When the right foot gets more urgent and/or above 2500rpm, the upper pin gets actuated. This is the VTEC-E mechanism at work and the engine effectively enters into the '2nd stage'. Now D15B 3-stage works in 16V mode (both intake valves works from the same mild cam-lobe).

Stage 2 operates from around 2500rpm to 6000rpm. When the rpm exceeds 6000rpm, the VTEC mechanism activates the wild cam-lobe pushing the engine into the '3rd stage', the power stage. Now the engine gives us the full benefit of its 130ps potential !

The 3-stage VTEC D15B engine is used on the current EK-series JDM Civic/Civic Ferio VTi/Vi together with Honda's new Multimatic CVT transmission. Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher. Stage-3 may not always be activated. The Multimatic transmission has a selector for Economy, Drive, and Sports mode. In Economy mode for eg, the ECU operates with a max rpm of around 4800rpm even at Wide-Open-Throttle positions.

The essence of 3-stage VTEC is power AND economy implemented on a 1.5l SOHC PGM-Fi engine. Many people mistakes 3-stage VTEC as a "superior" evolution of the power oriented DOHC VTEC implementation, describing DOHC VTEC as "the older 2-stage VTEC" and implying an inferior relationship. This is totally wrong because DOHC VTEC is tuned purely for high specific output and sports/racing requirements. 3-stage VTEC is in truth an evolution of SOHC VTEC and VTEC-E, merging the two implementations into one.


Yes I know Stage 3 VTEC is real

[honduh_head]

lol fun times

[Type - O]

that dog is awesomesuace

[justanls]

too fucking funny.

[Nedaaaah]

http://img514.imageshack.us/img514/9995/stag3doggdh4.gif

LMAO!!!

[EFing_bmxED]

the one with teh sound is best
http://h1.ripway.com/LinkinFanNum1/VTEC.wmv

[EvolEvo]

hahaha thats awesome.

[ILIKETODRIVE]

Yes I know Stage 3 VTEC is real

K, just making sure. :clap:

[USDM.LOVE]

the one with teh sound is best
http://h1.ripway.com/LinkinFanNum1/VTEC.wmv

Why thank you, I made that.

[comptonasskerry]

K, just making sure. :clap:

fuckin simon gettin all crazy about those fuckin single cams

[boostedrex]

gotta love all that vtec