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faith in cummins

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6.7 verses 5.9

Is this our motor?

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jmorse

TDR MEMBER
I ordered a 3500 chassis cab last week . I have confidence that cummins has developed a good engine in the 6. 7L. I will be selling my '99 3500 c&c, which has 213,000 miles and still runs like new. The 6-8 week wait is a killer though!
 
I sure hope you are right. I suspect that is exactly the same line of thinking used by Ford owners when the new for 2003 6. 0 was released. It didn't work out so well in that case :rolleyes: On the other hand, the Isuzumax was an unqualified success as a brand new engine for GM.



Besides us worry warts on TDR, I would guess the rest of the populatiuon that buys these trucks isn't giving the change a second thought. If they are it is excitement over the new larger engine, new 6 speed transmission, VGT turbo, more power..... etc,etc.



I personally have been burned on first year type stuff, twice by Mercedes Benz even, so I personally now avoid the first year of any major powertrain change.
 
Prairie Dog said:
I bought one of the earliest common rails with the same faith in mind and I wasn't dissapointed!



Me too, I bought two new '03s that spring. They turned out to be some of the best trucks I have ever owned. I also bought one of the first D-max trucks in '01, but was burned on that one :(



I'm not sure I would call the '04-'04. 5 much of a change, just a slight upgrade in power. Going to the common rail though in '03 does qualify, that was a big step from the '02s, and in a completely new body/chassis too.
 
jmorse said:
I ordered a 3500 chassis cab last week . I have confidence that cummins has developed a good engine in the 6. 7L. I will be selling my '99 3500 c&c, which has 213,000 miles and still runs like new. The 6-8 week wait is a killer though!





I feel exactly the same way. I ordered my chassis cab about 3 weeks ago. I bought an early 2003 HO and it is still going strong after 334,000+ miles. Made a 380 mile run with it today and it has spent its life pulling a trailer.
 
My 04. 5 was built the 1st week of production for the 600's



So was mine. I have had a shredded belt (5400 miles), and needed a new CP3 (19,000 miles), so, not perfect; but WAY better than my 2001 7. 3 PSD.



That being said, I, too, would NOT by ANY American vehicle first year of production, without it being out a while.



Case in point - I plan on purchasing a used SRT8 Charger in a year or two. I am actively following the Charger/300/Magnum forums now, to see what problems the 6. 1 Hemi has.



I'm sure the 6. 7 Cummins will be fine, but would not be surprised to see some teething problems.
 
gsbrockman said:
The story continues... ... ... ... ... ... ... ... .



I was heading home this evening and around the 93 or 92 mile-marker on Southbound I-75 I spotted another test truck... ..... a de-badged 2006/2007 (probably 3500 SRW LWB 4x4) with a flatbed pulling the test trailer.



I immediately scamper around the IMP (the old 1991 Chrysler Imperial) for some loose paper, grab my pen, and write in as big lettering as possible, all without running over traffic to my left and the Test Truck to my right, the following :



6. 7L 350 / 650



???????????????



The driver, obviously thinking I was nuts, gave me the nod of "yes".



After more scampering with another piece of paper, I wrote :





AISIN



and got yet another nod of "yes"





Greg



Thats funny :-laf
 
swexlin said:
Case in point - I plan on purchasing a used SRT8 Charger in a year or two. I am actively following the Charger/300/Magnum forums now, to see what problems the 6. 1 Hemi has.



I'm waiting for the 2009 Challenger SRT-8 6 speed. truck should be paid off by then.
 
Well, it has been said before, my '03 QC HO SWB SRW SLT 6SPD 4x4 WHITE Limited has been the best truck i have ever owened! Just 50k, what a truck should be! My '03 was ordered in early Dec'02, picked it up at dealship last 2 day's of Feb'03. None better, none...

Eric
 
I've seen those guys before, well, maybe not those EXACT guys, but that setup. Didn't realize what it was at the time, but I was somewhere around Elizabethtown, KY on I-65. They come out of Walesboro, which is just south of Columbus, IN. They have an old airfield (old Walesboro Airport) they use as a close-in test track right there at Walesboro. The Walesboro plant is the actual location where they manufacture the 5. 9/6. 7L motor. Columbus is supposed to get the light truck/SUV motor (see this thread in General Diesel Topics). They used to produce heavier engines at the HQ plant.
 
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:cool: If it is the engine yall are worried about, you have to remember, the 6. 7 has been in production at least two years for agricultural/off road applications. The 5. 9 common rail was in production in Europe for two years before the '03s came out here. Cummins knows their stuff. There have been the "issues" like the dowel pin, the vp44 transfer pump, the 53 block, but overall the medium Cummins engines are the best out there and highly reliable. I would have full faith in the 6. 7 if I were ordering a new truck. not much fear of the Asin transmissions either. They are a highly reputable company.

That being said, I have a flawless '03 (first year common rail) and a nearly flawless '96.

ALL of our Cummins powered trucks (my personal and our 4 company ones) have the original water pumps, alternators, starters and have never been "into" the engines (besides dowel pin fixes on the '96 and '98 and pump mods on those).

Have faith in Cummins. Engines is all they do! :cool:
 
I'm not so much worried about the problems that Cummins has had ( dowel pin, #53, LP hell) as I am the way Cummins handled the quality problems... BY DENIAL



Cummins did NOT stand behind their products.
 
Could someone here address what I have heard is a potential problem with the new 6. 7 - e. g. siamese cylinders.



1) does the current 5. 9L have siamese cylinders? (if so then there should be no problem).



2) if the 5. 9L does not, byt the new 6. 7L does have these types of cylinders, are we going to see lot of "overheaters" out there in the next year or two? From what I have reads on the net about them, they are problemtic and tough to keep cool in auto applications ... and even tougher in a truck application.



3) other than the EGR stuff, what other significant structural changes are there between the 5. 9 and 6. 7?
 
FATCAT said:
Could someone here address what I have heard is a potential problem with the new 6. 7 - e. g. siamese cylinders.



1) does the current 5. 9L have siamese cylinders? (if so then there should be no problem).



2) if the 5. 9L does not, byt the new 6. 7L does have these types of cylinders, are we going to see lot of "overheaters" out there in the next year or two? From what I have reads on the net about them, they are problemtic and tough to keep cool in auto applications ... and even tougher in a truck application.



I posted this on another thread, just my thoughts on the siamese thing



You know, I've been looking at the cylinder design of the ISX and this new 6. 7L. IMO, I can't see how the Siamese Cylinders in this new 6. 7L are all that much different thermally than the Siamese wetsleeves in the ISX.
 
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