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Join Date: Mar 2014
Location: Payson AZ
Posts: 110
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Mahle piston marking?

Please help me understand the meaning of the marking on top of 3.3l turbo piston.
I think it indicates that wrist pins are 0.5mm offset. Is that right?
If so, how do I install the pistons - which way should markings face?
Thank you in advance!
Ray

Old 03-21-2016, 06:15 PM
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Join Date: Dec 2002
Location: Long Beach, CA
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It's for offset wrist pins, as you say. The symbol is a pictograph of a crankshaft. The rectangle is the flywheel end, which shows how you should orient the piston.
Old 03-21-2016, 06:29 PM
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Join Date: Apr 2006
Location: New Zealand
Posts: 5,278
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Yes, offset. The squiggle mark is on the side of piston nearest flywheel.
Alan

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Old 03-21-2016, 07:31 PM
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