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Old 06-29-2008, 05:33 AM   #9 (permalink)
Vince-HX
Ecoformance Engineer
 
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Join Date: Jun 2008
Location: Arizona
Posts: 239

EJ7 - '96 honda civic Hx
Last 3: 58.02 mpg (US)
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Quote:
Originally Posted by rsx2002 View Post
the K20A3 is an i-VTEC
look closer

"On the other hand, the K20A3 uses a completely different method, but is still called VTEC. At low rpm, the two intake valves operate with different cam lobes. One valve gets the primary lobe (the taller lobe) and the other gets the secondary lobe (shorter). The exhaust valves always get shoved open by a single lobe with no tricks at all. When VTEC kicks in at 2300 rpm, both valves start following the primary lobe. That's it. There's no 5500 rpm kick in the seat."

Hondata has a nice writeup on this

Tech - K Series Tech
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70 mpg or die modding

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Quote:
Originally Posted by MetroMPG View Post
looking forward to seeing what kind of uber-sipper slinks out of the full race skunkworks.
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