Bruce Amacker Posted December 22, 2007 Share Posted December 22, 2007 Hmm, I'm bored, it's almost Christmas Eve and I got nothing better to do. /forums/images/%%GRAEMLIN_URL%%/grin.gif Let's take a $4000 exhaust and cut it open. I'm always curious to see what's inside. Here's the end of the DPF before the cut. Here's the inlet of the DOC before the cut. Note that with only 2400 miles (when this truck was totaled) the DPF is showing some blockage... The EGT's all appear to be the same PN. Note the carbon from 11 to 12 to 13. EGT13 and the outlet of the DPF. Buzz it through the band saw. The white stripe on the end of the DPF core doesn't mean anything, it's just where the saw blade got stuck and moved over a bit. Closeup of the DOC core: You can clearly see the end of every other DPF "tube" blocked off, so the gasses have to travel through the side wall. the DPF is really clean, overall. Both the DPF core and the DOC core weren't secured in any way, they were packed with some kind of fiberglass insulation. All 4 halves fell out immediately after the cut was made. Both DPF and DOC cores were exactly what you'd expect: Lightweight, fragile ceramic honeycombs that crumbled with the pressure of a thumbnail and weighed only a couple of pounds. I've been waiting for more 6.4's to hit the boneyards, as there's only a few nationwide right now. I was able to get the whole exhaust including sensors and tailpipe, electric water pump, baby radiator, and fuel lift pump from this one in Alabama. There's a law against selling used cats, and some of the yards didn't want to talk to me about selling them. One guy literally hung up on me. Imagine having the phone ring and having some meathead (like me) telling you that I'm not going to use it on a truck, I'm going to cut it in half to see what's inside. Yea, right, click. /forums/images/%%GRAEMLIN_URL%%/grin.gif I did finally get a yard to part with one, but I had to fax him a letter stating what I was going to use it for. But it wasn't cheap.... /forums/images/%%GRAEMLIN_URL%%/wink.gif /forums/images/%%GRAEMLIN_URL%%/grin.gif /forums/images/%%GRAEMLIN_URL%%/grin.gif /forums/images/%%GRAEMLIN_URL%%/grin.gif /forums/images/%%GRAEMLIN_URL%%/grin.gif Merry Christmas! P.S. I still don't see hardly any 6.4's on the road in Ohio. Anthony taught in Wyoming this week and said there were plenty of them out there. /forums/images/%%GRAEMLIN_URL%%/shrug.gif P.P.S. Hey, look at that! My ratings say I'm a flipping genius now! Quote Link to comment Share on other sites More sharing options...
LARRY BRUDZYNSKI Posted December 22, 2007 Share Posted December 22, 2007 Bruce when I went to the Cummins dog and pony show about the new DPF's they had a cutaway and looked pretty close to what you have the only difference is that the Cummins one is in sections for service with Marmon clamps holding it together. As for the filter it's the same but not cubed with partitions the way this one is. Very cool!!! /forums/images/%%GRAEMLIN_URL%%/thumbup.gif The Cummins one has it in 3 sections 1st section sensor with catylst 2nd section tube with sensor 3rd section DPF with sensor Very serviceable... Wait a minute, I took anothor look at the cutaway is it assembled with a clamp or is it welded? BE CAREFUL I HAD SOME FUN WITH IT AND CAUGHT A LITTLE FLACK... Quote: P.P.S. Hey, look at that! My ratings say I'm a frigging genius now! Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted December 22, 2007 Share Posted December 22, 2007 The picture of the assembly halved really shows the transition from sooty to clean very well! Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted December 23, 2007 Author Share Posted December 23, 2007 Wait a minute, I took anothor look at the cutaway is it assembled with a clamp or is it welded? That's a bolted flange between the units. /forums/images/%%GRAEMLIN_URL%%/grin.gif Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.