What is a three angle valve job?

Updated: 4/28/2022
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13y ago

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The area where a valve closes in the combustion chamber of a four-stroke engine is called the valve seat. During a valve job, this seat is ground at a set angle, usually 45 degrees, for a good seal. In a three-angle valve job, additional angles are ground into each side of the seat angle to ease the transition and improve flow.

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Q: What is a three angle valve job?
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