Orange connecting rods?

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Craig Burriss

Craig Burriss

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Just pulled my 440 out to reseal some things that I messed up and replace a steering box. Pulled the oil pan off and noticed 2 of my connecting rods are orange. I don’t remember them being this way 4 years ago when I built this engine.
They’re not blue or anything like they got hot. And the orange doesn’t wipe off. WTH?
3A3F2AF6-5253-4DE3-B37E-3DBC0090A57B.jpeg
 
You sure that isn't surface rust? Not trying to stir the pot, but that was my first reaction to the picture.
 
Knock knock..
Who’s there?
Orange
Orange who?

“Orange” you glad he didn’t stir the pot?
 
It's copper. The factory did that on some connecting rods to get the weight up to match the others. You'll see that in small blocks sometimes too. Seal it up and drive it, they are fine.
 
Hellrats said:
It's copper. The factory did that on some connecting rods to get the weight up to match the others. You'll see that in small blocks sometimes too. Seal it up and drive it, they are fine.
Click to expand...
I found those in an engine. Run it!
 
Hellrats said:
It's copper. The factory did that on some connecting rods to get the weight up to match the others. You'll see that in small blocks sometimes too. Seal it up and drive it, they are fine.
Click to expand...

Then why didn't he see it when he built it?
 
look up chevrolet "pink" rods
 
Not being a smart a$$, but if I put something together I'd certainly question the color of the rods then like your doing now.
 
I have had them. Machinist friend said they would test a run of rods for something and the color was a result of said test.
 
They copper plated the rods if the specs were slightly off. Not uncommon at all to find these.
 
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