Ok, so it's not a disaster? And if I get few grams of the piston and pin the error isn't even that bad...
Piston pin and balancing dilemma!?
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Emailed CP-pistons by this issue, and it seems that they can provide 9310 alloy pinns with thinner wall thickness. The JE HD pins has .210 thickness and these CP's has .160 thickness and only 90 gram weight but still good for 5cyl/700hp. Hmm...
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So I did order the CP piston pins. Case hardened and cryo treated 9310 alloy, and they are specsed to 175-200hp/cyl. Should be enough..?
The pins weight 90 grams, so it's only 6 gram more than my current pins, and 50% of that is only 3 gram. And after I remove all sharp edges of the pistons we are really close to the orginal balancing factor.

Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment

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