08:22:12am, Sunday, May 05, 2024
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A-pump on 5.9 Cummins?
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Registered: 02/09/2010 Posts: 237 |
Was there a stock application of a 5.9 cummins that used an A-pump? There is a local class that has a 360 ci A-pump limit, obviously designed for the IH school bus engines... But I was thinking a Cummins would work at least as well, but the trucks came with either a rotary or P-pump. Can a person get good power from a rotary? If not, which would be easier to swap an A-pump onto, 92 and earlier rotary pump engine, or newer P-pump? Thanks! |
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Re: A-pump on 5.9 Cummins?
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There are industrial/construction/irrigation.... versions of that engine that used a P3000 pump which has smaller plungers and internals (similar to an "A" pump) and is physically smaller than the P7100 and P8100 pumps they are probably afraid of - see if they would allow that combination, there are thousands of these around. If not, the early 8.3 off-road engines used an A pump that shouldn't require too much to retrofit onto a 5.9. |
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Re: A-pump on 5.9 Cummins?
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5.9's did use A pumps on some applications. That engine used the most different style fuel systems out there. Heck, they even put 4 cylinder A pumps on some applications. sounds like an interesting class. |
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Re: A-pump on 5.9 Cummins?
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Posts: 376 |
A p3000 is the same physical size as a p7100. The p7100 has bigger internals-cam bearings and plungers. |
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Re: A-pump on 5.9 Cummins?
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in the know
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Case 850 dozer as well as other industrial applications. |
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Re: A-pump on 5.9 Cummins?
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Posts: 590 |
The CaseIH MX series Maxxum tractors used a 5.9L with an A pump on them. MX120 & MX135's should have 5.9L's with a 10mm A pump. |
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Re: A-pump on 5.9 Cummins?
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Registered: 08/03/2008 Posts: 437 |
Read the latest in diesel power mag. A guy is making 650-700 with a faily stock engine with a VE pump. How much power are u wanting to make? What turbo can you run and how many rpm? |
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Re: A-pump on 5.9 Cummins?
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Anonymous User
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stay away from the ve pump the only way to get 650 hp on a 5.9 is to have a ve pump with 14 mm head and 4 mm cam plate and there very unreliable also u cant get many rpms out of them . they de-fuel at high rpms because they only have a single plunger element ... but if u want to put an A-pump on u will need to get a ve engine because the p-pumped engine has to big of a hole in the timing case ( this is because the p-pump has a bigger hub than a A-pump ) also the taper in the timing gear is to big for a A-pump shaft and the bolt pattern for a p-pump is bigger than a A-pump so if your gonna A-pump it dont buy a p-pumped engine |
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Re: A-pump on 5.9 Cummins?
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Anonymous User
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I believe that the case ih 5130 and 5140 had a 5.9L cummins in them and possibly had an a pump on them. |
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Re: A-pump on 5.9 Cummins?
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wyatt b
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the class weighs at 7000, box 3lm charger, 3000 rpms, 18.4's and a 10 mm A pump rule. It would be interesting so see how much of a advantage the p pump would be over the A. |
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Re: A-pump on 5.9 Cummins?
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Registered: 08/02/2008 Posts: 236 |
At 3000 rpm and 10mm A pump limit, I'd be real tempted to see if they'd let you run a rotary at 14mm. with a stock cam plate they're still reliable, and while I don't know what lift the A pumps are running, a 14mm plunger will move twice the fuel that a 10mm will at the same lift. 3000 Rpm really isn't a issue for a rotary. |
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Re: A-pump on 5.9 Cummins?
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Anonymous User
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10mm A-pump 370 cc max ... 14mm ve pump without the 4 mm cam about 330 cc max |
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Re: A-pump on 5.9 Cummins?
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Registered: 02/09/2010 Posts: 237 |
Ok, you guys are talking about a 14 mm pump.... Is that the factory rotary pump on the early cummins? Wyatt is correct on the class I would be pulling. Could I get enough HP to pull H-3 in a 706 with the rotary? Most the tractors in the class are based on 560's, and I believe the hp would better lend itself to a 706 chassis. Wyatt's commonrail cummins is not allowed in that class, but I have heard can put several feet on them easy. I imagine a P-pump should put even that to shame, with proper work done, of course. 
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Re: A-pump on 5.9 Cummins?
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stock VE's on 5.9's were 12MM plunger diameter. places like scheid, or columbus have 14MM heads they put in VE's. I would not think twice about going to the A pump, if that is the limit, RUN IT! I enjoy running my ROOSA, and keeping up with A pump tractors, but I have spent alot of time on my pump to get it to deliver the fuel needed, and hold up. you will never hurt a 10MM A, but a 14MM VE will be fragile. |
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Re: A-pump on 5.9 Cummins?
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wyatt b
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if they keep it at 6500 and 7000 you will have some work to do to make that weight with the 706 rear. I think the 560 is the better route to go. The crazy thing about my tractor is that we still running the stock injectors, pump and hx35 turbo, unfortunately we cannot control the rpm limit yet. |
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Re: A-pump on 5.9 Cummins?
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Registered: 02/09/2010 Posts: 237 |
That's part of the problem, Wyatt.... They can't decide what weight they want to run! What does yours weigh with driver? I am thinking 7000 should be easy, 6500 possible. I know of an 806 gas running 6000 without aluminum wheels, but that takes a LOT of work.
So can't you program a rev-limiter with the chip on the common-rail cummins? Seems to me they can take that stuff away with chips, perhaps nobody has considered going the other way! lol |
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Re: A-pump on 5.9 Cummins?
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wyatt b
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All truck pullers are worried about is more RPM and as of right now there is not any affordable standalone tuning units for the engine. It will be 3000 for next year. Last summer with the narrow front and bfg power grips it weighed right at 7000. |
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