p7100 pump

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p7100 pump

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p7100 pump - 10/7/2008 6:57:27 PM

justinwilliamskx

Posts: 745
Joined: 9/7/2006
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whats so special about it i hear its one of the best pumps to have on a diesel

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Post #: 1

RE: p7100 pump - 10/7/2008 7:58:14 PM

durallymax

Posts: 338
Joined: 2/26/2008
Status: offline

Very high flowing, very easy to modify. Endless possiblities.

However the best pump is the Sigma pump if you have $10,000 for just the core.

The P7100 pump came on Dodge Cummins trucks from 94-98. It was also on ag tractors.

Emissions were the big reason it was replaced. To this day with the exception of select off road diesels you will not find a P style pump on a diesel.

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The"Dieselholic"

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'03 GMC 2500HD LB7/Allison EC/SB 4x4 Dark Charcoal Metallic SLT. Injectors at 84,000. Sled Puller/DD
EFI Live: V7.5.4/V8.1 OS:03904405
Suncoast IV w/1055
512rwhp 1085lb-ft
13.6 @ 99mph
Many mods to come over the winter.

(in reply to justinwilliamskx)

Post #: 2

RE: p7100 pump - 10/7/2008 8:55:50 PM

Swamp Star

Posts: 290
Joined: 8/13/2008
From: Forsyth Georiga
Status: offline

yep durally is right but if i had 10g to blow i would buy a sigma and put it on my mantle just to look at it

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(in reply to durallymax)

Post #: 3

RE: p7100 pump - 10/8/2008 1:35:58 PM

650twin

Posts: 1036
Joined: 12/24/2001
From: weston, wv
Status: offline

little known fact is that the p7100 came on much larger cummins engines ...

500 - 600 hp motors ...

it replaced the previous rotary VE pumps which only made about 10,000psi

cummins was able to use the pump to meet new emmisions laws for diesels in 1995 ...

when we went to 500ppm low sulfur fuel (as opposed to Ultra low sulfer diesel at 15ppm currently in use)...

not many realized it at that time or now ...

that's why the 94-98 p-pumped motors also had cats ...

that big pump could be run reliably at higher pressures to better atomize the fuel and improve emmisions ...

when cummins went to the now hated VP-44 they were able to make even more pressure "reliably" and get rid of the cats ...

in '03 they went with the common rail for even MORE pressure and better atomization ...

alas in 04.5 dodge stuck the cats back on and moved hp to 325 and torque to 610 ...

the thing most cummins' guys find amusing is that the 04.5 - 07 motors make a surpising amount of smoke stock ...

will blacken a rear bumper in a thousand miles ... stone stock ... through the cat

pretty impressive to think that in 1989 the 5.9 cummins made 160 hp at 400 tq and in 04.5 the same 5.9 made 325 hp and 610 tq ... same BASIC short block

< Message edited by 650twin -- 10/8/2008 1:40:06 PM >

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(in reply to Swamp Star)

Post #: 4

RE: p7100 pump - 10/8/2008 8:07:58 PM

durallymax

Posts: 338
Joined: 2/26/2008
Status: offline

The P pump on the dodge is reworked when compared the the P pump on an N14. But the same pricipal applies.

Its funny to see Gm come from 120hp in the 6.2 all the way to 425hp for the new duramax. Its also funny to see GM go from a 3% diesel pickup market share in 2000 to over 30% today.

_____________________________

The"Dieselholic"

http://www.youtube.com/dieselholicpullteam

'03 GMC 2500HD LB7/Allison EC/SB 4x4 Dark Charcoal Metallic SLT. Injectors at 84,000. Sled Puller/DD
EFI Live: V7.5.4/V8.1 OS:03904405
Suncoast IV w/1055
512rwhp 1085lb-ft
13.6 @ 99mph
Many mods to come over the winter.

(in reply to 650twin)

Post #: 5

RE: p7100 pump - 10/9/2008 9:18:44 AM

650twin

Posts: 1036
Joined: 12/24/2001
From: weston, wv
Status: offline

quote:

ORIGINAL: durallymax

The P pump on the dodge is reworked when compared the the P pump on an N14. But the same pricipal applies.

yup ... more pressure but less volume ...(i think, feel free to educate) ... to improve fuel atomization

still an amazing fuel pump to me ...

but i do have that cummins bias thing going

< Message edited by 650twin -- 10/9/2008 10:13:13 AM >

_____________________________

'08 700 Rhino LT225/85R14 TSL RADIALS on ford rims
'01 dodge c u m m i n s daily driver (505hp/1032tq dyno'd at the wheels),'06 dodge c u m m i n s (the wifes ride), '85 bronco-6"procomp-4.56 detroits front/rear-37X-terr procomps-steel tube bumpers-etc

(in reply to durallymax)

Post #: 6

RE: p7100 pump - 10/9/2008 10:10:16 PM

durallymax

Posts: 338
Joined: 2/26/2008
Status: offline

Its not a cummins bias the P pumps were used on anumber of motors. Just like the Cummins and Duramax share the same pump now days.

_____________________________

The"Dieselholic"

http://www.youtube.com/dieselholicpullteam

'03 GMC 2500HD LB7/Allison EC/SB 4x4 Dark Charcoal Metallic SLT. Injectors at 84,000. Sled Puller/DD
EFI Live: V7.5.4/V8.1 OS:03904405
Suncoast IV w/1055
512rwhp 1085lb-ft
13.6 @ 99mph
Many mods to come over the winter.

(in reply to 650twin)

Post #: 7