{HEAD ~ An air delivery passage} extends generally from the first end along said side to {TAIL ~ an intake passage} leading through the engine to a combustion chamber therein 
{ HEAD ~ An air delivery passage } extends generally from the first end along said side to { TAIL ~ an intake passage } leading through the engine to a combustion chamber therein
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH