Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Intake Manifold: Description and Operation

The aluminum alloy manifold is a cross-flow type with long runners to improve inertia. The air plenum chambers absorb air pulsations created during the suction phase of each cylinder. A Manifold Tuning Valve (MTV) connects the plenums at specific engine speeds to maximize low rpm torque without reducing high rpm power.