Need a little help locating the picture of the three pistons, the Dodge, Ford and Chevy Diesel pistons side by side where the Dodge piston was a lot larger than the other two. The picture was posted a few times on this site, however, I did a search and found no results. Any help would be great. <br>Thanks...Big dawg ;D

 

Pistons or rods?

 

Thought it was the Pistons, but I could be wrong. Anyway it was the pic where the DC indicated a medium duty and the other two were light duty.

 

This one?<br>

 

Stakeman,<br> Yep that's the one. Thanks for the help. My folks are going to buy a Diesel truck and I wanted to show them the difference between the three. I'm sure after they see the pic, it will be a done deal. Thanks again...<br>Big dawg

 

The far left rod is from the old GM diesels. not the duramax

 

[quote author=StakeMan link=board=7;threadid=15308;start=0#143712 date=1054265833]<br>The far left rod is from the old GM diesels. not the duramax<br>[/quote]<br><br>Not that the Duramax rod is any bigger....<br><br>Merrick Cummings Jr

 

There is a pic that I have on my home computer that has the durmax and teh 6.0 powerstroke on it. When I get home I can give you a ling to it if you would rather have that one.<br>DM01

 

 

Notice on the Cummins the angle at which the crankshaft collar is attached. This allows for better force distribution to angular momentum than the straight line application of the others.

 

Thanks for all the replys...Dodgeman01 I'll take it when you get time. Any and all photo's are going to be a great selling point. Kinda wonder why the Dodge Dealers don't have this info on the show room floor....bet they would sell more if they did...(than again, some might have it)...<br>Big dawg

 

It was posted already. I knew somone else had it.<br>DM01

 

Don't get me wrong now, as I think that picture is great, but there's a reason the Cummins rod is so stout; you have 6 coffee can sized pistons connected to them, not 8 smaller ones. The force produced in the smaller cylinder of the Recycled Beer Can engine or the PowerJoke doesn't warrant a rod the size of the Cummins.

DuraMax: What a terrible thing to do to a recycled Silver Bullet.

 

The &quot;B&quot; series being used in many applications of medium duty trucks needs the ease of installation of a &quot;in-frame&quot; kit. Basically being able to drop in a set of rod and main bearings, pistons, rings, etc. The rod cap is offset to facilitate an easier installation of the big end into the cylinder bore at strange or tight angles with the engine block remaining in the frame of the truck. Under the cowl comes to mind in some of the smaller medium trucks with tight engine compartments.

When we recently worked with a major rod manufacturer to produce some 4340 Chrome-Moly connecting rods for the &quot;B&quot; series this offset topic came up. Their in-house engineers and I came to the same conclusions. Its convenience driven for the most part and a small gain could be had in strength at certain rod loading conditions only.


Don~

edit- I forgot to add the part about camshaft clearance as well. The cam and connecting rods come very close to one another internally. This offset was crucial for that reason as well.

 

The 5.9 is basically the same design as all the over the road trucks. I drive a Volvo with a N-14 Cummins and it is the same design, a In-line 6. There are hardly any v-8 diesels except maybe marine apl. The angled cap on the rod helps the distribute force to the rod and not the bolts holding it on.