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(Cylinder Heads)
HEMI... spherical
Sources:
PARTS -same as regular engine -piston -cylinder -spark plug -valves (intake/exhaust) -crankshaft -connecting rod + ROCKER ARMS
-HEAVIER (because rocker arms and other some other parts needed) -MORE EXPENSIVE - CAN'T HAVE MORE THAN 4 VALVES (valve angles would be ridiculous)
-LARGER VALVES = helps engine breathe -EASIER ROUTE FOR GAS TO COMBUSTION CHAMBER =helps engine breathe -SPARK PLUG AT CENTER TOP OF CHAMBER = better combustion efficiency -*LESS SURFACE AREA TO VOLUME RATIO = less energy lost due to conduction = more thermal efficient
1) http://auto.howstuffworks.com/hemi1.htm 2)http://www.hemi.com/hemi.html 3) http://www.youtube.com/watch?v=-YRnAr7kG5o
-Chrysler Trademark. They were the first to offer to the public in 1951. -First angle between intake and exhaust valves was 58.5 degrees. -"new" HEMI's as they're called weigh 500lbs.
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