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Author Topic:   Copper colored Rods
chevyscrounger
Dirt Full Roller

Total posts: 43
posted January 30, 2002 03:31 PM
Any body know why some small block chevy rods copper colored on the little end?
I just bought a set of reconditoned rods and one of them is like this. I've came across a few of these rods before and always wondered
why they did this just did'nt know who to ask. I have asked guys around here and just get funny looks.

4barrel
Dirt Full Roller

Total posts: 26
posted January 30, 2002 05:56 PM
I think This is a type of coating put on at the factory to take up slight imprefections in machined sizes.I have seen lots of rods this way.I dont think it affects the rod strength any as i have never had one fail.

Gene
Dirt Freak

Total posts: 230
posted January 31, 2002 04:55 PM
Just a guess here, we send a lot of air hard die steels out for heat treat. Most of them come back with the copper-like finish. These steels are wrapped in a stainless steel foil during the processing. I think the rods that you see with the color have been through that type of heat treat.

Gene
Dirt Freak

Total posts: 230
posted January 31, 2002 05:04 PM
Just a guess here, we send a lot of air hard die steels out for heat treat. Most of them come back with the copper-like finish. These steels are wrapped in a stainless steel foil during the processing. I think the rods that you see with the color have been through that type of heat treat.

merfalator
Dirt Newbie

Total posts: 4
posted January 31, 2002 10:05 PM
its a fix for ooooops too big.

jim welch
Dirt Newbie

Total posts: 2
posted January 31, 2002 11:23 PM
quote:
Originally posted by merfalator:
its a fix for ooooops too big.

Agree with oops thats the correct answer.pioneered by GM for the less than perfect fit.

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RangeRover
Dirt Maniac

Total posts: 174
posted February 01, 2002 06:08 AM
A veteran engine builder who used to prep stock rods for us answered that question clearly by saying, " Think of that as 'rod bondo'." 4barrel is right, but that engine builder wanted to stay away from those rods with alot of that stuff as much as possible. Sometimes we would take in over a dozen rods so he could try to find eight acceptable ones.

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