{HEAD ~ A cam shaft} of {TAIL ~ an engine} is provided with a timing change mechanism which is driven by hydraulic pressure to alter the timing of a intake valve  
{ HEAD ~ A cam shaft } of { TAIL ~ an engine } is provided with a timing change mechanism which is driven by hydraulic pressure to alter the timing of a intake valve
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH