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Old 02-21-2010, 06:47 PM   #1
canucktrucks
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Cummins ISX Questions ??? HELP

I'd like to ask a few questions...I "HAD" an N14 Cummins 460+ engine set to 525 or maybe 500hp, not sure, but it was one hell of an engine, it did things for me that it should never had been asked to do....ie, I had a 97 International set up to haul a 11 axle RGN, and it had 600,000 miles on it, to start with, I rolled main and rods in it and hooked it up, it was not un usual to be grossing 172,000 and it NEVER let me down or missed a beat.... NOTHING, I put 75,000 HARD MILES on it and it got me through some very hard money times.

Anyway, I am in a little better shape now and away from the oversize business, I have a job I can start and never gross over 80,000 lbs, we have a new law up here in Ontario Canada, that makes us govern all our big trucks at 65 MPH.....so as you can see the job will not be hard on the truck and I will look after this truck as well as all of my equipment....I am the guy that is not into chrome, more into top sets, oil changes grease jobs, anything the truck needs or looks like it is going to need, it gets, after all, its the one making the money, right.

So I am looking at another International, I know its not a Pete or KW, but for me, it does the same job.....And I see, I cant buy any International newer then 03 without a cat or Cummins, I have heard some seriously bad horror stories about these ISX engines, I am looking at a 06 with a 450 ISX and a 13 speed trans, it has about 450,000 miles on it.....

My questions is.....Would it help this engine live longer if it had the egr valve taken out and the hole plugged with a pipe plug and the egr was tied up so all the electrical was still hooked up and getting power, maybe you would have to re adjust the computer or ??? , then roll in bearings and keep the oil changed every 10,000 miles ???

I have heard that they blow up because the oil is getting so dirty its wiping out the bearings, we spin one and out comes a rod......keep in mind, I am buying or looking at a used engine, so I dont know what the last people have done, although, these are fleet trucks ??? Is there a certain year to stay away from or one to buy ??? Help , sorry about the long story, I just wanted you to sorta see how I am and that I dont mind maintaining an engine, but I cant have it window its self or be in the shop all the time.....Shawn
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Old 02-21-2010, 07:03 PM   #2
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Well here we go!!!! Some people on here might hate my opinions but I dont give dam!!!!! I am not an engineer nor a 50 year master,but I have been around these engines SIG/ISX since their coming in 98,I have also seen and experienced the ups and downs of this engine. Unless you have some programming master genius in canada you cannot delete the egr system,although I have converted an CM870 engine[EGR] to a CM570 engine[PRE-EMMISION] but it was more time and money than it was really worth,the guy owned a junk hard to parts were readily available,but labor was intensive and some block off plate and custom mods were needed. As far as my knowledge and experience tells me,unless you change the oil once a year,or whenever you feel like it your not gonna have bearing/engine failure!!! I have no idea how hard you run nor how much power you need,but I would not be affraid of owning one,you will do an EGR valve here or their but there warrantied for 1 year or 100,000 miles,I would take my chances.... However if you had 500HP and were used to it 450 is not going to impress you! I would go 500,530,565. GOOD LUCK
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Old 02-21-2010, 07:09 PM   #3
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Quote:
Originally Posted by CumminsISXpower View Post
Well here we go!!!! Some people on here might hate my opinions but I dont give dam!!!!! I am not an engineer nor a 50 year master,but I have been around these engines SIG/ISX since their coming in 98,I have also seen and experienced the ups and downs of this engine. Unless you have some programming master genius in canada you cannot delete the egr system,although I have converted an CM870 engine[EGR] to a CM570 engine[PRE-EMMISION] but it was more time and money than it was really worth,the guy owned a junk hard to parts were readily available,but labor was intensive and some block off plate and custom mods were needed. As far as my knowledge and experience tells me,unless you change the oil once a year,or whenever you feel like it your not gonna have bearing/engine failure!!! I have no idea how hard you run nor how much power you need,but I would not be affraid of owning one,you will do an EGR valve here or their but there warrantied for 1 year or 100,000 miles,I would take my chances.... However if you had 500HP and were used to it 450 is not going to impress you! I would go 500,530,565. GOOD LUCK


OK,thanks, I had only heard that rumor about by-passing the egr.....I must tell you, I was in a junk/scrap yard in OHIO and there was a row, ( 18-25) engines, they were all ISX'x and almost every single one had a hole in the side of the block !!!

I know there has to be some that break, but it shocked me to see that many in one spot along with scared me....

I'm sure there's just as many Detroits and Cats out there that break too, I was just wondering if there was anything I could do maintance wise to stay ahead of that and if there was a better year then another.....as far as power 450 would be plenty, I am more interested in fuel mileage......
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Old 02-21-2010, 07:21 PM   #4
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there very good engines. change your oil when its time, and check your fluids youll be ok. as isxpower said you might have some egr valve problems, as well as egr cooler failures, as with every engine has there own quirks.
those engines with holes in the block could be due to emission law trades. We have that alot over here in Cali. Fleet trades in older trucks under the grant here, govt. knocks a hole in the block so the engine cant be "operational". engines are sold in other countries and the hole is welded back up and its back running again.
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Old 02-21-2010, 08:19 PM   #5
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Hey Canucktrucks, good instinct man, I also believe there is some problem with mains and rods. I can only guess on circumstances which affects those ISXes with holes in them - but I saw few and have heard about this enough times and from few different sources... There is something wrong with SOME ISX-es which blows them. Not all of them, probably (my guess) some serie... bad shells maybe? (another guess).

Lately spoke with guys who work on them engines ALOT and they convinced me, that despite Cummins swearin that these should last million miles... they last up to 650,000 miles maximum, so they recommend checking them earlier. I was like "BS !!!", but they said they even had 2 customers really anal about their trucks (like they knew I am) and they were like me, calling them liars. Well, we all have them rolled now. Mine just started to go red at 550k. There is more to this in my case (block was a factor too), however I would definitely recommend checking used ISX bottom for sure.

Here goes my first question, is it possible, that real slow (mean undetected for some time) coolant leak (from infamous EGR-coolers) could be the cause?


By the way I'm new to the forum and love it Good thing going on here
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Old 02-21-2010, 08:28 PM   #6
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Well you can come to IL,IA and I can walk you around well maintained ISX big hp too that all have ran way over 650,000,2 in the shop right now 1 with 889,000 and the other with 1.1 mil on the ticker with no bearings yet and I will put money on the line that we can overhaul both without issues when its time. PS the onw with 1.1 swallowed 5 gal off coolant at 200,000 miles due to cooler failure,evedently didnt hurt it a bit!!!!!!!!
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Old 02-21-2010, 08:47 PM   #7
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Well you can come to IL,IA and I can walk you around well maintained ISX big hp too that all have ran way over 650,000,2 in the shop right now 1 with 889,000 and the other with 1.1 mil on the ticker with no bearings yet and I will put money on the line that we can overhaul both without issues when its time. PS the onw with 1.1 swallowed 5 gal off coolant at 200,000 miles due to cooler failure,evedently didnt hurt it a bit!!!!!!!!
I just repeated what I was told. Im not saying all of them engines are like that, if they were - dam, we would hear about it big time...

Where in IL ?
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Old 02-21-2010, 09:09 PM   #8
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Like CumminsISXpower is saying the ISX is a very good engine. It does not like contamination though poor repair practices will cause the problems. I have seen many cm870 ISXs go through the shop with near or over 1million miles with only minor problems.

the cm570 engine did have problems with going over 500k but there are very few of those engine on the road that have not already had the bottom end touched.
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Old 02-21-2010, 09:54 PM   #9
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Welcome to the forum Canucktrucks . I have no answer on the cummins but I would like to invite you to join the Canadian Club http://www.thedieselgarage.com/forum...p?t=45&page=40
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Old 02-21-2010, 10:56 PM   #10
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Like CumminsISXpower is saying the ISX is a very good engine. It does not like contamination though poor repair practices will cause the problems. I have seen many cm870 ISXs go through the shop with near or over 1million miles with only minor problems.

the cm570 engine did have problems with going over 500k but there are very few of those engine on the road that have not already had the bottom end touched.
Is there anything special about ISX that would make it more sensitive for contamination than other engines?
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