cylinder head
Combustion chamber cover
The cylinder head is the detachable upper portion of an internal combustion engine, bolted atop the engine block to seal the cylinders.
It contains the combustion chambers and typically houses intake and exhaust valves, spark plugs, and fuel injectors.
Gasket failure between the head and block—a blown head gasket—is a common and serious engine problem.
Lobed rod operating valves
- rocker armPivoting engine lever
- valveFluid flow controller
- tappetCam-actuated engine lever
- springRecoiling metal spiral
retainer · keeper · guide · seat · stem · port · lifter · pushrod
Camshaft positioned above valves
- flatheadStraight-tipped tool or fish
- crossflowCurrent perpendicular to main direction
- wedgeTapered splitting tool
- hemisphericalHalf of a sphere
DOHC · pushrod · integrated · modular · aluminum · cast iron
Mechanical leak preventer
- o-ringToroidal sealing element
- sealantGap-blocking substance
- flangeProjecting attachment rim
- flatnessAbsence of slope
warpage · coolant leak · oil leak · blown gasket · resurfacing
Adapting for compatibility
- polishingSmoothing by friction
- millingProcessing grain mechanically
- resurfacingComing up again
- crack repairFixing narrow breaks
Movement of atmosphere
- compression ratioComparison of original to reduced
- portingAdapting for compatibility
- swirlRotating, curving movement
- tumbleUncontrolled rolling descent
Act of taking away
- installationProcess of putting in
- bolt patternArrangement of mounting holes
- coolant flushChanging circulation fluid
- carbon buildupResidue from incomplete combustion
pressure test · disassembly · reassembly · cleaning · inspection · overhaul
camshaft
Lobed rod operating valves
- rocker armPivoting engine lever
- valveFluid flow controller
- tappetCam-actuated engine lever
spring · retainer · keeper · guide · seat · stem · port · lifter · pushrod · intake valve
overhead cam
Camshaft positioned above valves
- flatheadStraight-tipped tool or fish
- crossflowCurrent perpendicular to main direction
- wedgeTapered splitting tool
hemispherical · DOHC · pushrod · integrated · modular · aluminum · cast iron
gasket
Mechanical leak preventer
flatness · warpage · coolant leak · oil leak · blown gasket · resurfacing
porting
Adapting for compatibility
- polishingSmoothing by friction
- millingProcessing grain mechanically
- resurfacingComing up again
crack repair · welding · blueprint · knurling
airflow
Movement of atmosphere
- compression ratioComparison of original to reduced
- portingAdapting for compatibility
- swirlRotating, curving movement
removal
Act of taking away
- installationProcess of putting in
- bolt patternArrangement of mounting holes
- coolant flushChanging circulation fluid
carbon buildup · pressure test · disassembly · reassembly · cleaning · inspection · overhaul
- auto partsengine, brakes, tires, wheels, steering wheel
- car partsengine, steering wheel, brake, seats, tires
- gasoline enginesgasoline engine, four-stroke engine, spark plug, piston, crankshaft
- classic car partscarburetor, distributor, spark plug, spark plugs, radiator
- Engine Bayengine, engine block, radiator, alternator, air filter
- engine partspiston, valve, crankshaft, camshaft, spark plug