Anyone have a picture of a 5.9 Common rail piston?

McRat

McRat

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Apr 23, 2006
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Need to see how the bowl is shaped to settle a dispute.
 
do you want the piston itself? or can a shot of a shortblock do?
 
Admit it Pat, you really swapped in a Cummins and are trying to figure out spray patterns..... LOL
 
McRat said:
Need to see how the bowl is shaped to settle a dispute.
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try these
 

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lmills said:
do you want the piston itself? or can a shot of a shortblock do?
Click to expand...

Need to see what shape the "bowl" in the piston is. Any pic is better than nothing. Here is what a cross section of a Dmax piston looks like:
 

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Apparently this might be related to piston cracking issues the Dmaxes are seeing on some engines.

Notice how the Dmax bowl has a "lip", this is called a re-entrant bowl shape, because the injector sprays on the flat, the lip, then in the bowl.

Looks like the Cummins is not "re-entrant".
 
No.... the Cummins is not "rear-entrant" like the Dmax is LOL
 
Pat, I can get a pic of a piston out of the engine later today and will post it this evening for you if you need it.
 
Timbeaux38 said:
No.... the Cummins is not "rear-entrant" like the Dmax is LOL
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No, it's the 12v OWNERs that are rear-entrant, mostly receivers. :D
 
McRat said:
No, it's the 12v OWNERs that are rear-entrant, mostly receivers. :D
Click to expand...


You would know alot about looking at the rear of a 12v. LOL I bet you can spell Dodge with your eyes closed LOL

Pat, there is no way you could possibly have any first hand knowledge of 12v owners being rear-entrant.......... You cant get close enough to their rear end to find out LOL
 
Dennis Perry said:
Are you saying the Duramax takes it in the rear:hehe: .

Dennis
Click to expand...

Only if we hit the brakes when a Dodge is behind us! :D
 
Timbeaux38 said:
Run that 10 yet Pat? LOL
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Hell, I can't even DRIVE it yet!! :D

I'll be cutting it very close for Vegas. Parts that were supposed to arrive still hadn't. :9
 
We are showing up whether or not we have the truck ready. Might almost be fun to go to races as a spectator for once.


NAW!!!:D
 
the 03-04 piston is alot different than a 04.5 and up.
it has a re-entrant type of bowl, what advantages or disadvantages do you see with this set up?
 
On the Dmaxes, if the lip gets too hot, the piston cracks. A lipless design is being discussed by Guy Tripp of SoCalDiesel, and I think he has a good point.
 
So you've given up trying to beat us, no you want to copy our pistons in hopes it will make your engine better :)

JK McRat, I have a lot of respect for those Duramaxes, just don't like the wrapper they come in.

George
 
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