The exhaust valve lift mechanism 24 may additionally include {TAIL ~ a pushrod} 30 and {HEAD ~ a rocker arm} 32 
The exhaust valve lift mechanism 24 may additionally include { TAIL ~ a pushrod } 30 and { HEAD ~ a rocker arm } 32
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH