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Thread: Valve Seat Recession Pattern

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    Legendary dom14's Avatar
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    Valve Seat Recession Pattern

    Hey Guys,

    The valve seats of my RB30 head(spare one) is showing a pattern as in the below picture.
    As you can see most of recession is on intake valves, not the exhaust valves.

    Can you suggest some scenarios as reasons for this pattern?

    Thanx

    Dom
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