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Old 08-13-2019, 02:44 PM   #1
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2001 Cummins 5.9 injection question

I am looking at a 2001 Freightliner based Thomas bus. The bus is in another state and I have only seen pictures, and the owner is not knowledgeable. The bus is powered by a 5.9 Cummins with some kind of Allison behind it. Anybody have any idea whether this is going to be a mechanically injected engine with the P-7100 injection pump?
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Old 08-13-2019, 02:54 PM   #2
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Being a 2001, if it's the original engine, it will have a vp44 in it.

It will also likely have an at545 as well.

That's pretty much the plain jane entry level combo in the school bus world.
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Old 08-13-2019, 04:17 PM   #3
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Would it still be a 12 valve engine? Or like the pick up trucks of this vintage, a 24 valve?
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Old 08-13-2019, 06:32 PM   #4
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24 valves.
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Old 08-13-2019, 06:51 PM   #5
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Engine: CAT C7 300hp w/retarder
Rated Cap: 46 + 1 36,200 lbs
Interesting to note then, that there are companies that make components to convert a 24 valve from the VE pump to the P pump, but is pretty extensive and pretty expensive. You could probably find a 12 valve engine for less and just swap it.
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