lp ??

[dragrdan]

so is there a # for the low pressure spring( or a rebuild kit #) or do you have to buy both pumps to get it?

[DTanklage]

somewheres on here or the pay forum there is a list of the pn's and diff pressures

let me know where it is if you find it please

don

[MMiller]

Cummins part numbers-
# 3936320 lift pump (qty 1)
# 3914753 Fuel Line (qty 1)
# 3931348 Gasket (qty 2)
# 3914284 Spacer (qty1)
# 3918191 Seals (qty 2)

Is there anything else before I go to bed?

I just called my local cummins shop with these part numbers. They told me the numbers had changed on some of the parts.

4988751 is the new lift pump number- $174.39 not available until Feb 16
3939258 is the new gasket number, need two-
3963983 is the new seal number, need two.

He said nobody had the old number, so I guess I'm SOL for now, unless someone else here can find one. I guess it will be next month until I can upgrade lift pumps.

Michael

[lazyjoe]

Just picked my pump up today at my local case i/h dealer.
1 fuel line #J914753- $21.95
1 spacer #J914284- $11.15
2 gaskets #J939258- $3.22 each
2 seals # 87415913- $2.37 each
1pump #J936320- $157.37
plus $12.00 freight.
total- 213.29



Joe

[DTanklage]

good job

i got one of those pumps left...

the high press 2nd gen

the one with the big fittings

new in box

[MMiller]

Joe, is your's indeed the hi pressure one? Or did it change part numbers too? I getting confused as the part numbers are not staying the same.

I don't want a high pressure one, just want the higher volume piston pump for the VE. Ain't going crazy power, just good solid reliable power.

Michael

[lazyjoe]

Mine is the low pressure pump. (So I was told.)


Joe

[DTanklage]

if ya wanna know for sure before using it (owning it) measure the installed ht for the spring and throw it in a spring tester at that height

that way if it is not what you wanted you can still exchange it

[PToombs]

If Joe got the original pump he's lucky. When I got one for 1991cummins on here last month, there were only 3 in stock at Case dealers, country wide. The part number was being superceded again, and the new pump is going to cost about $300. It is due out around February I think.

I just looked at the receipt, the last pump part # is 87648730, this is the updated, same pump, part number.
I'll try to remember to post the newest pump part number, when it comes out.

[DTanklage]

was that with the big or small piston?

[PToombs]

Small one.

[DTanklage]

why run the small one???

i dont get it

my truck started suckin the big one dry around 375 hp

of course a lot of it has to do with plumbing

and where the fuel tank is mounted

tank

[SChandler]

Why run the small one? Because the small one does a pretty good job of supporting 300hp, doesn't require new fuel lines from the tank to the injection pump, and the R&D has already been done by many different people. Your racing background gives you a different mindset from most members on here. Most of us are stingy SOB's or are broke (or both) and just need a little bit more than what the factory pump can handle. Thus, the ever popular low pressure piston LP swap.

[peobryant]

Why run the small one? Because the small one does a pretty good job of supporting 300hp, doesn't require new fuel lines from the tank to the injection pump, and the R&D has already been done by many different people. Your racing background gives you a different mindset from most members on here. Most of us are stingy SOB's or are broke (or both) and just need a little bit more than what the factory pump can handle. Thus, the ever popular low pressure piston LP swap.

That pretty much sums it up.

[DTanklage]

this style pump is prolly good for half a million miles at the low rpm these motors turn

if you are broke go to the junk yard and buy a used one for 15 bucks

then you can use the other 150 bucks redoing the lines and fittings. trust me. your 15+ yr old truck needs new fuel lines. all the way from the tank to the ve