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Valve relief location

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Old 03-10-2017, 03:44 PM
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Default Valve relief location
Does the valve relief on these piston go upwards or down.

I would assume the laser etched serial number would be faced upright, but I believe the valve relief should be closer to the valley plate rather than the headers.


Any opinions?

Pic 1 or 2... which is correct
Attached Thumbnails Valve relief location-image.jpg  
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Old 03-10-2017, 05:46 PM
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Valve reliefs go up, towards the valley. FACT.
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Old 03-10-2017, 06:17 PM
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Why do you think they would have put the sketched number so it would be upside down rather than right side up?
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Old 03-10-2017, 06:36 PM
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Originally Posted by aaron101m
Why do you think they would have put the sketched number so it would be upside down rather than right side up?
I have no idea. I just know that the engine won't care about the etching, just where those reliefs are.
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