How Vtec Works
#1
How Vtec Works
I understand WHAT vtec does and the whole larger lift after 4500 RPM's. Just wondering if there is more then one solenoid, as in 1 per cylinder? or does one large solenoid activate all 4 vtec rocker arms?
#6
Originally Posted by RacerXI,Aug 10 2010, 07:05 PM
1 solenoid locks pins in the rockers which in turn rides the big cam.
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#8
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The high-cam lobe operates on a single rocker that sits between the low-cam rockers. It has a pin on either side that locks it to the low-cam rockers when the pins are extended. The pins are engaged with oil pressure, and the VTEC solenoid opens the valve that sends oil pressure to the pins to engage them.
#9
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The high-cam lobe also rides on a unique spring called a "lost motion" spring. It keeps the high-cam lobe in contact with the cam, when it is not being used by VTEC to open the valves.
good info here
good info here