Anyone seen a 903 Cummins motor before?
Holy hijack batman...
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From: North Carolina
903. Uses a PT pump, not at all unlike the ones used on the 855. Look at the data tag, get the cpl number and go to a good fuel pump shop and they should be able to build one for you. Easy.
I've worked on a lot of them in fire pump applications where they seemed to do real well. As previously mentioned, keep up with the cooling system chemistry and run it like you stole it.
I've worked on a lot of them in fire pump applications where they seemed to do real well. As previously mentioned, keep up with the cooling system chemistry and run it like you stole it.
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Looking in my shop manual, There is reference to separate bulletins on setting up the pump. They are Bulletin No. 3379077, 3379068, 3379182. They should show you how to set the pump for different horsepower ratings. Like I said, I didn't even take mine to a pump shop. I just had a buddy that used to work at a truck shop and had some extra springs and shims and he did it for me. Took him about 30 minutes to do. Charged me $25. My 4880 Massey had a problem loosing fuel prime when I bought it. Had the entire pump gone through for around $300. Again, just remember that a PT pump for a 903 rotates opposite of a PT for an 855, so they won't interchange.
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Also Dad didnt think 3/8ths would be big enough depending on what load your pulling.
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I have must not have have known that there were any low powered ones out there. 
All the ones I have seen have been 900+ hp. I see about 3-4 a month in the hallway at work. I believe that the biggest hp one was 1500 hp. Now these don't go in trucks. These are for NATO and are being tested still. Heck, Cummins still has a 903VHHP dept. HHP stands for high horse power.Don't really know much else about them, we don't put them into trucks so I don't mess with them.
All the ones I have seen have been 900+ hp. I see about 3-4 a month in the hallway at work. I believe that the biggest hp one was 1500 hp. Now these don't go in trucks. These are for NATO and are being tested still. Heck, Cummins still has a 903VHHP dept. HHP stands for high horse power.Don't really know much else about them, we don't put them into trucks so I don't mess with them.
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If you look up the world record for plowing you wil find a Case on tracks with an ISX in it. It plowed 792 acres in 24 hours with a special built plow.
http://www.caseih.com/news/newsevent...NA&newsid=2337
If you could get the power to the ground and keep the traction there is no telling what you could do with one of them.
http://www.caseih.com/news/newsevent...NA&newsid=2337
If you could get the power to the ground and keep the traction there is no telling what you could do with one of them.
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From: South Indy
I wouldn't want to drive anyway, wouldn't want the responsibility. I miss the days when we still had farmland around us, but it was all sold and developed over the past 10 to 15 years.
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"Put those engines in a tractor and hook to a ten-bottom plow. See how they pull then and hold up. "
Hey haloman,
I bought my 4900 Massey from a relative that used to pull an 18 bottom plow with itat the stock 375 hp. He said it pulled it just fine. Those old Masseys had HUGE transmissions and final drives in them. The trans was actually designed to take 1500 hp+! That's because Massey originally had planned to go to 800 hp with the 4000 series 4wd tractors and Timkin helped them design the trans with a factor of 2 designed into it, to take twice the hp that would be applied to it. One guy told me the trans weighed in at about 7K pounds. I'm not for sure, but he was a tech at a Massey & Case IH shop, and told me the new powershifts in the Case IH STX series looked wimpy compared to the old Massey trans. Massey actually marketed the tractor as a 5200 in the early 90's, but used either an 855 Cummins or 60 Series Detroit.
Hey haloman,
I bought my 4900 Massey from a relative that used to pull an 18 bottom plow with itat the stock 375 hp. He said it pulled it just fine. Those old Masseys had HUGE transmissions and final drives in them. The trans was actually designed to take 1500 hp+! That's because Massey originally had planned to go to 800 hp with the 4000 series 4wd tractors and Timkin helped them design the trans with a factor of 2 designed into it, to take twice the hp that would be applied to it. One guy told me the trans weighed in at about 7K pounds. I'm not for sure, but he was a tech at a Massey & Case IH shop, and told me the new powershifts in the Case IH STX series looked wimpy compared to the old Massey trans. Massey actually marketed the tractor as a 5200 in the early 90's, but used either an 855 Cummins or 60 Series Detroit.
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Maybe we just have a wimpy 903 then. Because the 855 Cummins Steiger will walk allover the 903 Steiger. I am talking pulling the same load in a higher gear in the same field. These tractors are the same (tranny etc) except for the motor. Oh well, I am glad to hear that guys are having luck with the 903. There is no complaint about the rest of the tractor on ours except for the 903. The motor itself is the only thing that has given us problems.
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You farm the river bottoms near Henderson? I lived across the river (kind of) from you all. Spencer County, home of Santa Claus. I don't think that they sold those powerful 800+hp engines to any civilans considering the fact that the DOD/NATO still has a contract with Cummins 903 engines.