what the hell????
 

http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

i didnt know y7's were vtec.

Re: what the hell????
 

::)

Looks like a normal vx head to me

Re: what the hell????
 

Didnt the vtec-E have 3 stage vtec that was ----?

Re: what the hell????
 

yeah somethin like that.

Re: what the hell????
 

They were made for better fuel economy not for performance

Re: what the hell????
 

hence the e meaning economy. i thought the only vtec-e motor was a d15z1.

Re: what the hell????
 

No the d16y5 was also vtec-e

Re: what the hell????
 

Was it just an economy cam (IE you could get a performance cam made up), or was the entire head design based around economy?

Re: what the hell????
 

A novel implementation of VTEC in SOHC engines is the VTEC-E implementation (E for Economy). VTEC-E uses the principle of swirling to promote more efficient air-and-fuel mixing in the engine chambers. VTEC-E works by deactivating one intake valve. Examine the diagram below.

http://asia.vtec.net/spfeature/vtecimpl/img8.jpg

In the SOHC VTEC-E implementation, only one intake cam-lobe is implemented on the camshaft. Actually it is really a flat "ring". In operation this means the relevant rocker arm will not be activated causing the engine to effectively work in 12-valve mode. This promotes a swirl action during the intake cycle. VTEC is used to activate the inactive valve, making the engine work in 16-valve mode in more demanding and higher rpm conditions. Honda was able to implement air-fuel mixture ratios of more than 20:1 in VTEC-E during the 12-valve operating mode. The SOHC VTEC-E engined EG-series Civic ETi is able to return fuel consumptions of as good as 20km/litre or better!!

SOHC VTEC implemented for power is often mistaken as SOHC VTEC-E which is implemented for economy. It is worthwhile to note that the 1.5l SOHC VTEC-E used in the JDM Honda Civic ETi produces 92ps. This is in fact less than that produced by the standard 1.5l SOHC engine's 100ps which uses dual Keihin side-draft carburettors. SOHC VTEC in the D15B produces 130ps. This is 30% more than the standard SOHC implementation !


GOOGLE>ME!

Re: what the hell????
 

no that was the D15b