dohc vtec vs sohc vtec

**fried** · 24-02-2004 09:06 PM

ok, so we have had the *wats vtec* discussion.

now IN CONTEXT with dohc, and sohc, whats it all do... hows it all work...

from what i remember that was said....

vtec, kicks in in highrevs and gives more continuing power because of air/fuel something something.... but thats with twincam dohc... which has exhuast, and someother inlet.outlet in the cam shaft.... ??? correct???

hahaha im so lost....

what then waht about sohc?

because for example, there are the pure sports bred dohc vtec engines from honda, then theres the sohc vtecs from engines such as the eg civic vti and accord vti-L and v6l..... and then also jsut plain dohc nonvtec engines from cars such as eg civic si......

so wats what? whats good? waht does waht.... how do they work.... all those sort of questions

thanks! heres a thinker of a question...... or maybe not...

**XXpl0Sive** · 24-02-2004 09:25 PM

The SOHC VTEC is a system that achieves mild power gains. Usually, SOHC VTEC engines gives about as much power as DOHC non-VTEC engines of similar displacement. Whether or not the added complexity of the VTEC mechanism off-sets the simplicity of SOHC (versus DOHC) is up for debate.

http://www.leecao.com/honda/vtec/

**Weq** · 24-02-2004 10:36 PM

SOHC vtec works on the intake side only.. no exhaust side alteration.

**wynode** · 24-02-2004 11:27 PM

Did you even read the sticky?? Obviously not.

I suggest you read that.........a few times.

SOHC VTEC if for economy
DOHC VTEC is for performance

Eric, please read this:
http://www.ozhonda.com/forums/viewtopic.php?t=18

And if thats not enough, then read this:
http://www.leecao.com/honda/vtec/whatsvtec.html

**fried** · 24-02-2004 11:28 PM

what is better then? in terms of power, torque, daily driving, spirited driving?

dohc nonvtec
sohc vtec
dohc vtec
sohc nonvtec

**wynode** · 24-02-2004 11:33 PM

Originally Posted by fried

what is better then? in terms of power, torque, daily driving, spirited driving?

DOHC VTEC.

It gives you the comfort of a smooth idle for driving around town, with higher lift cams for better performace for 'spirited' driving when you put your foot down and spend most time in the higher rev band.