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    autojain Posts: 3, Reputation: 1
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    Aug 8, 2010, 08:50 AM
    Why are Valve Tappet Clearence increases in HOT cond. w.r.t. Cold specifications
    As an Specification all Engine manufacturers provide the "Engine Head Valve Tappet Clearance Setting parameters" for Hot Condition Higher than that in Cold Conditions of Engine.

    Since,

    The Valve tappet Clearance is in between Two Metals , then How Come it Increases when the Metal become Hot??

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