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2nd Gen Non-Engine/Transmission Cod Rod Picture

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:D Too bad we don't have a pic of the new Durmax's engine connecting rod. Would be interesting to see what it looks like compared the the ones in the above pic. :D
 
Yeah Duromax Guys!

We know you are lurking out there. Send us a picture of a Duromax rod. Of course we are going to be suspicious that it might be a picture of a EMD rod from a locomotive:--)
 
Originally posted by David Gardner

Yeah Duromax Guys!

We know you are lurking out there. Send us a picture of a Duromax rod. Of course we are going to be suspicious that it might be a picture of a EMD rod from a locomotive:--)



:-laf :-laf which one though, the blade or fork? :-laf
 
Originally posted by diesel DOG

isn't it six vs. eight?



Yes... But...



8 divided by six is 1. 33. I think its fair to say that the Cummins rod is much larger and stronger than 1. 33x the competition.



Keep in mind also that the 7. 3l PSD is 1. 24x as large as a cummins and the DM is 1. 12x as large.



On a more technical level, I believe the Cummins rods show a more mature design. For example, the Cummins rods exhibit the following characteristics that are minimal or absent from the GM and International rod:



1. Larger bearing surface area.

2. Better fillet radii to prevent stress concentrations

3. Maximum size of the crank pin, as evidenced by the canted end cap (required to remove the rod from the block through the piston hole, I believe).

4. Maximum size of wrist pin.

5. Nonlinear radius of curvature on the upper edge of the crankpin.



The above was written by TDR members rbattelle & DPelletier. :)
 
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Somebody must have doctored that cod rod picture above, because I happened to have this one on my computer here at home. It was trotted out to smack some sense into a fellow who sneers at American engineering and says the Japanese have us beat... (he drives a Lexus ;) )
 
As long as we're on the subject of rods, how about if we expand the topic a bit. For example, the rods connect to what? The crank, right? The crank turns in what? The mains, right? So how many main bearings in the SIX cylinder 5. 9 CTD? And how many mains would be in the EIGHT cylinder P-stroke? BTW, anybody ever read about/see the balancing/matching procedure for CTD rods? :)
 
:-laf Good pic, Mike.



I don't know off the top of my head the number of mains in an ISB block, but if I had to guess I'd say 4. And 3 for the powerstroke?
 
Main Bearings

I heard there were 7 Main Bearings in the Cummins and 5 Main Bearings in the Powerstroke and Duramax. I'm not positive about this information but, that's what I was told.
 
Seems like you and I were told the same thing, Buffalo. As I recall, I think I read about it in a factory brochure around the time I bought my truck -'95. I definitely recall being impressed.
 
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