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Old 05-21-2016, 09:31 AM   #1
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Question A P-Pump?

Good morning folks!

Just curious... what is a p-pump and how do you feel about it with the Cummins 5.9?

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Old 05-21-2016, 09:40 AM   #2
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Good morning folks!

Just curious... what is a p-pump and how do you feel about it with the Cummins 5.9?
They're what you want.
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Old 05-21-2016, 10:15 AM   #3
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Absolutely. All 12-valve Cummins are non-electronic and the inline Bosch pump is the number one choice for a whole host of reasons. Here is a little blurb from a Cummins blog...

The 1994 - 1998 Engines offer good power and torque, as well as good fuel economy. These engines have the Bosch P7100 inline manual fuel pump which produces 160-215HP stock. With this pump, one can easily add 15-95HP by installing a fuel plate. These engines are possibly the most desirable 12-Valves because power upgrades are easily accomplished with fuel plate adjustments etc. If you get an extremely good deal on an earlier engine it may be cost effective to convert it to a P7100 pump if your desire is big Torque numbers.
There are many power upgrades that can be done to any of the 12-Valve engines without totally sacrificing fuel economy or reliability.
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Old 05-21-2016, 02:11 PM   #4
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As SnoopDog would say, "They are the shiznit of IPs."
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Old 05-21-2016, 04:19 PM   #5
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Is the 5.9 Cummins desirable, regardless of the p-pump?
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Old 05-21-2016, 05:07 PM   #6
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There is a 53 block that is known to have problems if you tend to overheat it much. Other than that they're pretty good. Preferences are varied as you might expect. As for the 5.9, if there's not a 53 on the block just under the IP you're good. The other marking on the block from Mexico I believe is kind of garbled and longer than 53. There was a discussion on this just a couple days ago.
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Old 05-21-2016, 06:55 PM   #7
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There is a 53 block that is known to have problems if you tend to overheat it much. Other than that they're pretty good. Preferences are varied as you might expect. As for the 5.9, if there's not a 53 on the block just under the IP you're good. The other marking on the block from Mexico I believe is kind of garbled and longer than 53. There was a discussion on this just a couple days ago.
I'm a jackass... what's the IP? ...also, the "53" is obvious?
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Old 05-21-2016, 06:58 PM   #8
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is a P-pump similar to what my mechanical DT360 has even though im IHC and not cummins?
-Christopher
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Old 05-21-2016, 07:53 PM   #9
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is a P-pump similar to what my mechanical DT360 has even though im IHC and not cummins?
-Christopher
I think its a Bosch MW pump. I've been wrong before though.
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Old 05-21-2016, 07:57 PM   #10
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yeah I think you are right mine is a Bosch.. ive had several people tell me they like my bosch because it can safely be turned up and the timing advanced a few degress on the DT360 / 466 without worry of over-temping the exhaust..

-Christopher
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Old 05-21-2016, 08:34 PM   #11
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yeah I think you are right mine is a Bosch.. ive had several people tell me they like my bosch because it can safely be turned up and the timing advanced a few degress on the DT360 / 466 without worry of over-temping the exhaust..

-Christopher
The p pump is another bosch.
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Old 05-21-2016, 08:36 PM   #12
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The p pump is another bosch.

seems like bosch to fuel systems is kind of like bendix to air brakes...

do cats and mercedes busses use bosch too?

-Christopher
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Old 05-21-2016, 08:59 PM   #13
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I think the P-pump is from about 1994-1998 on both Cummins and International engines. I think EC is right about it being a different Bosch pump.
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Old 05-22-2016, 10:56 AM   #14
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Speaking of these Cummins 5.9s... Anyone have experience with the killer dowel pin?
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Old 05-22-2016, 11:01 AM   #15
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Got mine taken care of before installing the engine. Couple of ways to go about it. Buy or make a tab that is screwed into a hole next to it...or just peen the edge of the hole the KDP is in. That's the route I wet since the screw & tab just seemed to be more two more things that could wind up in the timing gears.

Either way, if you have a model with that issue...it needs to be addressed.
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Old 05-22-2016, 02:19 PM   #16
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That's an awkward procedure in a FE. Thanks for the peening idea Tango.

That sounds most reasonable, since the tab and bold are two additional possible problems. Not to mention the fact that I read somewhere the tab and bolt are about $50.
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