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Piston rod question
https://www.slantsix.org/forum/viewtopic.php?t=9883		 Page 1 of 1
Author:  Marten [ Wed Jul 21, 2004 2:16 pm ]
Post subject:  Piston rod question
Did clean up some old greasy rods from a 225" and discovered that the #1 differs from the others in its lower end, have anyone any good idea why?
Author:  Doctor Dodge [ Wed Jul 21, 2004 9:44 pm ]
Post subject: 
It sounds like the engine may have been "patched together" sometime in the past to repair a spun rod bearing.

If you get an engine that has a bad rod knock, shops / mechanics will need to swap-out the crank and bad connecting rod because they are too damaged to recondition. This is not a problem as long as the replacement con rod is the same weight as the others.
DD
Author:  Dennis Weaver [ Wed Jul 21, 2004 11:18 pm ]
Post subject: 
I have torn down motors that have never been apart that had two slightly different style rods installed with the same part number, but different markings. I have not encountered this with a slant six, but there is a possibility that, as in the ones I've seen, the factory was probably in the midst of changing vendors (my theory) and the assembler just installed the first 8 rods he happened to pull from the bin. :?

I would be more inclined to believe that a single oddball rod would be more suspect as a repair as DD has stated.

D/W
Author:  Charrlie_S [ Thu Jul 22, 2004 6:26 am ]
Post subject: 
Were these rods, all from the same engine? If they were just in a pile, one of them could be from from a cast crank, while the others are from a forged crank. Or the other way around.
Author:  Marten [ Thu Jul 22, 2004 8:02 am ]
Post subject: 
From the very same engine, and no.1 is the one least subjected to what gruesome things ever can happen inside an engine, the flange towards front has non-concvae surfaces at bottom, between the bolthead and mating point, the "back" side looks like all the rest... :?
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