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#1
01-22-2009, 01:35 AM
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Damaged Piston Advice (pics)
I was cleaning my pistons today and I just spotted this.
It looks like something fell into the engine at some point in its life and got crushed into the top of the piston. You can see the marks on the head (that is after being skimmed too)... What do you guys make of this? It feels sharp to the touch. Need some thoughts and advice.   
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k 
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#2
01-22-2009, 01:56 AM
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Those marks don't look much different than the raised lnumbers and letters on the piston. You could hammer the marks flat, or grind them down but personally, I wouldn't worry about them.
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#3
01-22-2009, 05:48 AM
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me too
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#6
01-22-2009, 11:51 AM
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Well I was concerned with hot spots...
Think I should carefully sand it down so its no longer sharp?
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#7
01-22-2009, 07:22 PM
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It couldn't hurt.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#8
01-22-2009, 08:03 PM
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Quote:
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I'm sick of .sig files
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#9
01-23-2009, 04:07 PM
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Ditto on the sandpaper warning - you don't want bits of aluminum oxide in there.
If you really feel the need to make them not sharp, perhaps just peening it gently would suffice. -tp
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#10
01-23-2009, 08:33 PM
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That would work. Or some wet dry moistened by oil and then wipe it off.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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