Photographs, Head
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The Ultimate Performance CNC phase 2 head fully assembled

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An inlet port on the standard 2L head

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The same port after phase 2 CNC work. The port is reshaped but is not that much larger. Shape and velocity is often as important as cross-section

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The combustion chamber is the same capacity on all the heads and usually come in at around 26cc. This one has the +1 mm inlet valves fitted

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