jdmaccordbo!916
12-10-2003, 12:47 AM
this engine has a normal 4 valve per cylinder arrangment.. At low engine speed, the pimary intake valve operates at normal lift while the secondary intake valve opens only slightly to prevent fuel accumulation in the intake port... At high engine speed the primary and secondary intake rocker arms are connected to the mid intake rocker arm to allow high valve lift... A synchronized piston connects/disconnects the three intake rocker arms... Hydralic pressure against a timing piston moves the syncronized piston one derection, while a stopper piston and return spring moves the synchronizing pistons back when hydraulic pressure is reduced...