Editing Quench (section)
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==Piston design== For a wedge shaped combustion chamber like used in many engines, a flat top piston is the best design for promoting the quench effect. However there are times when a dish has to be used. In those cases a reverse dome, also called inverted dome, or D-cup piston (below left), will be the best compromise. {| |[[File:KB P-N 135 SBC 383 PISTON.jpg]] |[[File:H423NP.jpg|300px|center]] |} Next to a D-cup piston would be a wide quench band ''round'' dish piston as seen above right. This isn't as good as a D-cup, but it is better than a stock-type SBC piston seen below. The stock piston has a too-narrow quench band due to the large dish plus the 45 degree large chamfer around the piston OD. [[File:Round dish sbc piston.jpg|500px]]
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