The engine is oriented with its crankshaft vertically extending, such that the engine has a top and a bottom, a first end and a second end, and {HEAD ~ a side} between {TAIL ~ the ends} 
between
The engine is oriented with its crankshaft vertically extending , such that the engine has a top and a bottom , a first end and a second end , and { HEAD ~ a side } between { TAIL ~ the ends }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL