I might catch some flack on this one but my experience with diesel engines shows many that have been dusted due to the use of a K&N style filter. Not to say K&N is bad, they have thier place and do increase power. However if you would like your engine, that you payed a $5k preimium for and would take $12k to replace, to last I would caution you against the use of these filters. They allow more air in by using larger holes in the filter, the dirt is trapped by the oil that must be added to them. The problem is that a diesel, by nature, sucks the maximum amount of air on each intake stroke(no throttle plate restriction). This in turn sucks the oil and dirt into the engine, basicly lapping in your rings. If you like them, good luck, just dont skimp on the service.
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duramax diesels
- Thread starter deere755
- Start date
- Views: 6607
KAB
Gold Member
When you decide to get one wait until the improved one comes out. 360hp/650lb. ft. torque. Press Release
Allison transmission now includes a version of "Tap Shift" Press Release
As for many on the road in North East Ohio and North West PA I see quit a few and the dealers have a hard time keeping them in stock.
Kurt
Allison transmission now includes a version of "Tap Shift" Press Release
As for many on the road in North East Ohio and North West PA I see quit a few and the dealers have a hard time keeping them in stock.
Kurt
NevadaSmith
Bronze Member
</font><font color="blue" class="small">( I might catch some flack on this one but my experience with diesel engines shows many that have been dusted due to the use of a K&N style filter. )</font>
HGM,
Actually, a mechanic at the dealer told me that what he has seen the most of is injector problems with the K&N. He said most people do not let the oil dry enough and it gets sucked into the intakes gumming things up. His caution was that "if" I wanted to use one, oil it and let it dry comletely. He recommended any other type of filter than a 'wet' one.
NevadaSmith
HGM,
Actually, a mechanic at the dealer told me that what he has seen the most of is injector problems with the K&N. He said most people do not let the oil dry enough and it gets sucked into the intakes gumming things up. His caution was that "if" I wanted to use one, oil it and let it dry comletely. He recommended any other type of filter than a 'wet' one.
NevadaSmith
wroughtn_harv
Super Member
I have a 2003 C5500 with a Duramax and an Allison.
I get eleven miles per gallon pretty well all the time even though I weigh fourteen six hundred pounds. The same bed on a 97 3500HD with an automatic and a big block weighted about twelve five. It got seven to eight.
I love the power and appreciate the mileage. I just went over seventy five thousand miles and had the injectors done for the first time. I've been told it's something I'm going to have to live with. The prior to late 2004 Duramaxs have injector issues. In fact the 2001 Duramax got an extra hundred thousand mile warranty on just the injectors.
I can't say enough about the Allison. It's an absolute sweetheart.
If I was to buy a three quarter or one ton little truck it'd probably be a Dodge diesel with a manual transmission. Since Mercedes bought them they've really improved their stuff.
My next truck will probably be a Freightliner business class. It's the same size physically as my 5500 but I can get it with a C-7 Caterpillar and an Allison. Apples to apples it's about thirty percent more than the Chevy or GMC but it's a big truck downsized rather than a small truck supersized.
Dodge doesn't make a truck my size (Freightliner is owned by Mercedes so I guess they do). The Ford 550 has a great motor but the rest of their components are closer to a one ton's than those from GM.
Before I'd hot rod a diesel I would look at those who have who've got serious mileage on them. While my truck was in the shop I borrowed a Dodge dually that had just had the chip removed because of problems.
If I was going to buy a three quarter or one ton I'd definately go diesel. A big block gas motor will get about half the fuel mileage and the initial difference between the gas versus diesel will come back to you when you sell or trade.
One thing you have to consider if you're going diesel is you will get stuck a lot easier with the diesel just because you have so much extra weight on the front axle.
I get eleven miles per gallon pretty well all the time even though I weigh fourteen six hundred pounds. The same bed on a 97 3500HD with an automatic and a big block weighted about twelve five. It got seven to eight.
I love the power and appreciate the mileage. I just went over seventy five thousand miles and had the injectors done for the first time. I've been told it's something I'm going to have to live with. The prior to late 2004 Duramaxs have injector issues. In fact the 2001 Duramax got an extra hundred thousand mile warranty on just the injectors.
I can't say enough about the Allison. It's an absolute sweetheart.
If I was to buy a three quarter or one ton little truck it'd probably be a Dodge diesel with a manual transmission. Since Mercedes bought them they've really improved their stuff.
My next truck will probably be a Freightliner business class. It's the same size physically as my 5500 but I can get it with a C-7 Caterpillar and an Allison. Apples to apples it's about thirty percent more than the Chevy or GMC but it's a big truck downsized rather than a small truck supersized.
Dodge doesn't make a truck my size (Freightliner is owned by Mercedes so I guess they do). The Ford 550 has a great motor but the rest of their components are closer to a one ton's than those from GM.
Before I'd hot rod a diesel I would look at those who have who've got serious mileage on them. While my truck was in the shop I borrowed a Dodge dually that had just had the chip removed because of problems.
If I was going to buy a three quarter or one ton I'd definately go diesel. A big block gas motor will get about half the fuel mileage and the initial difference between the gas versus diesel will come back to you when you sell or trade.
One thing you have to consider if you're going diesel is you will get stuck a lot easier with the diesel just because you have so much extra weight on the front axle.
I'm not sure how it would effect the injectors, it should be a direct injected engine, meaning the air doesnt meet the injector untill its in the combustion chamber. It might be a coincidence, seems like the Dmax's have injector issues to begin with.
I do agree about the dry filter. If you feel the need for a larger filter, I would look for a larger surface area dry style filter that will just allow more air, properly filtered into the engine. Just dont look for the cheap alternative. I have seen many older PowerStrokes eat the filter because the owner installed a cheap aftermarket that couldnt withstand the suction of a diesel. Of course if you were looking for performance, this probably wouldnt be an issue.
I do agree about the dry filter. If you feel the need for a larger filter, I would look for a larger surface area dry style filter that will just allow more air, properly filtered into the engine. Just dont look for the cheap alternative. I have seen many older PowerStrokes eat the filter because the owner installed a cheap aftermarket that couldnt withstand the suction of a diesel. Of course if you were looking for performance, this probably wouldnt be an issue.
RobertN
Super Member
It will be interesting to see how this leap frog of power pans out. The Cummins motor is easily capable of more power. The thing that really puts a spin on this is a 6spd auto. It won't affect Ford so much with thier 5spd, as it will Dodge with it's 4spd auto. Dodge is going to have to step up to the plate with its auto tranny...
What amazes me, is how over 4 years, they have moved so far ahead in power range. I have an '01 Dodge, at 235hp. The '05's Dodge and Fodr are almost 100hp more, and this new Duramax will be 125 more hp!
What amazes me, is how over 4 years, they have moved so far ahead in power range. I have an '01 Dodge, at 235hp. The '05's Dodge and Fodr are almost 100hp more, and this new Duramax will be 125 more hp!
OP
deere755
Platinum Member
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- Mar 4, 2005
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I guess my only other concern is where I work in the winter time I won't be able to plug it in if it gets down around zero which doesn't happen a whole lot here in Illinois but it does ounce in a while. Will it start on a cold morning with out being plugged in? I know they have came a long way with cold weather starting. I guess if worse came to worse I could leave it running for 8 hours. I have got a lot of good feed back thanks for all the replies.
MJB
Gold Member
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- 1952 Case DC-4, 2001 JD4300 MFWD, HST
I have a 2004 1/2 Chevy 2500HD with the Duramax. Love it. The early models (2001-2003) did have a fair amount of trouble with the Bosch injectors. The jury is still out on the newer models but the failure rate seems much lower. The root cause is still a matter of much speculation with the leading theories being either fuel cleanliness, low lubricity with the newer low sulfur diesel, or possibly a design or manufacturing flaw. As mentioned earlier GM has extended the warranty on the injectors for the early models. As far as intakes and filters go, save your money. Actual dyno testing with the various filters as well as no filter at all showed no measurable performance difference in this application. Also independent testing showed that the OEM filter had better filtering efficiency and dirt holding capacity compared to any of the cotton gauze of foam filters. There is a good website for GM diesels at The Diesel Place. Do a search on "Air Filter Study" or "Injector failure" and be prepared to do a lot of reading.
NevadaSmith
Bronze Member
</font><font color="blue" class="small">( I'm not sure how it would effect the injectors, it should be a direct injected engine, meaning the air doesnt meet the injector untill its in the combustion chamber.)</font>
HGM,
I'm sorry...fingers went into action before the brain kicked in. It was not the injectors but a sensor in the manifold that gets all gunked up by the oil causing all kinds of problems. Thought more about it later and my old feeble brain corrected me /forums/images/graemlins/smile.gif
HGM,
I'm sorry...fingers went into action before the brain kicked in. It was not the injectors but a sensor in the manifold that gets all gunked up by the oil causing all kinds of problems. Thought more about it later and my old feeble brain corrected me /forums/images/graemlins/smile.gif
