Suck, Squish, Bang, Blow: Part 4
The combustion chamber on the top is an H22 (Prelude) head which, surprisingly, doesn't have any true quench area. Note how the flat area behind each pair of valves is recessed below the surface of the head. The combustion chamber on the bottom is a B18 (Integra GS-R). In the B18, the quench area behind each pair of valves is flush with the head, meaning it will be much closer to the piston at TDC, and the combustion gases will be shot toward the center of the combustion chamber when the piston comes up.
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