In Doc's write-up on engine assembly in FAQ:
Presently assembling a 70 engine after the machine shop finished boring, grinding, cleaning, etc. and noticed the connecting rods had been substantially heated and swelled to shrink fit the pins into the rods. Significant discoloration of each pin rod end is evident when compared to the rest of the rod.

Should I be concerned or is this expected/anticipated normally?

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

This is a normal way to assemble pistons onto rods and should be no worry. I suppose a shop could overheat them, but I have not heard of this.

Lou

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Home of Slant6-powered fun machines since 1988

Worry if the big end is discolored. As Lou said, that is how most shops get a pressed pin in.

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