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Is there anyway I can tell if an engine has forged pistons without pulling it all apart? Engine is running 160psi compressing at 151000 ks, but insure of engine history weather it's been rebuilt with forged gear or what the go is. Rb25det engine.

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https://www.sau.com.au/forums/topic/454821-forged-engine/
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Jump from cyl to cly, its rare that they are all so built up that you cannot read any of them.

Valve relief cutouts in the pistons are also a dead give away that they are not stock. (if the pistons used has them)

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https://www.sau.com.au/forums/topic/454821-forged-engine/#findComment-7498046
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