Combines 1660 Cummins 8 3 oil consumption

theredgreenshow

Guest
It kinda sounds to me that the problem may be your oil since the consumtion increases so much as the oil gets older. I have never noticed such a thing in my equipment. If you go ahead and overhaul your engine, I would go with the genuine parts and not skip any details such as the rod bolts. The money you save on labor by doing it yourself can be spent very well on the best parts (OEM).
 

4020dt

Guest
I forgot to mention I have been using Delo RPM 400 15-40 for the last couple years previous to that I used FS SuperX Gold 15-40 . As far as parts , I was thinking of going with Cummins recon rods , oem parts and what ever else it takes to do the job right .
 

George_2

Guest
Try switching to Case IH Diesel No 1 oil 15W-40 grade. I use that in my 1991 1660 with 2200 hours and it only burns a quart about every 30-40 hours. That is about the same as my 1460 with the IH engine used to burn using Case IH NO Diesel No 1 SAE 30 oil. I would check this out next year before tearing into the engine.
 

ds1

Guest
We have an 89 1680 , 2400hrs that used to use a gallon of oil per twelve hours, but last season a rocker arm adjusting nut backed off and didn't open the exhaust valve, so the piston melted. we overhauled it this past winter and now uses no oil. we used a low price kit, but did buy new rod bolts from case. if it's not low on power you can buy a lot of oil for price of overhaul.
 

Turbo

Guest
have you had an oil analysis done yetIJ I would think that that would be the first step to take as it would show you what is wearing, how much carbon is in your oil and how often you need to be changing fluid and filter. As for overhauling the engine don't let someone bs you about quality oem parts to rebuild it. I sell engine rebuild parts everyday and can pretty well tell you who makes what. Mahle builds a lot of Sandp sets for genuine Cummins, who in turn supplies Case. Anyone who believes Case, John Deere, Agco or any other OEM manufacturer builds their own wearing parts such as pistons, liners, rings, gaskets, or valves needs to take a look at the worn out parts that they are replacing and find the product manufacturing n's and codes stamped and molded into these parts. Aftermarket parts can be every bit as good as oem parts providing quality control has done their job. I have yet to see a rod out the side of the block on a recently overhauled engine to be parts failure. It has always been mechanic error. My advice to you is talk to your mechanic. look to see if he has the proper repair manuals for torques, procedures and tools to do the job right the first time. I have worked the selling end of nationwide parts sales for 5 years and sell between 5,000 to 15,000 dollars worth of parts per day and have seen a lot of problems arrise from these 3 things alone. So check your oil, check your mechanic and check your parts and you will be just fine. Good luck.
 

4020dt

Guest
Thanks for the responses everybody . I haven't had an oil sample done yet but I am going to do that . The local CIH people said I might have a broken ring , it has happened . They said that I should get all the numbers from the engine and they will send them in and see if anything comes up etc . I have never had an engine use that much oil before that's why I am worried and I know I can buy lots of oil for what an overhaul will cost even if I do it myself . The engine runs real good , no smoke , lots of power , starts real good and all that . This machine is supposed to be one of the newer ones that didn't have the oil consumption problems that the first year Cummins engines had or at least that's what they say . Personally I would preferr to have the IH DT466 enging , it is a far superior enbine as far as I'm concerned , it is built better and will hold up better . I am not sure yet what I am going to do , still looking for options , as far as I can see it will take $2,000 for the parts alone .
 
 
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