Volvo RWD 140-160 Forum

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Installing valve seats... 140-160

posted by  someone claiming to be Clayton on  Tue Aug 26 15:50 CST 2003 [RELATED]

You give up a career in Rocket Science to post on this board?
Lead isn't soluble in an iron/carbon lattice. All metals are crystalline in the solid state.
Edge dislocations have nothing to do with it. What valve burning is caused by a lack of lead is produced by ionic transfer of the seat iron to the valve face, and then into the exhaust. Then the seat gets too wide, and boom, radial burning. That's what the SAE says, and they are smarter than all of us.
Lead CAUSES valve burning, by notching the seat.





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New B20 head gasket choices ?? [140-160]
posted by  someone claiming to be Al 260Z  on Mon Aug 18 10:30 CST 2003 >


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