Carter Piston Lift pump Install ????s.

[Rebel Ram]

I didnt realize these pumps were so BIG. (See pics. ) So much for "Bolt on" mod. I have two questions. #1- What is that molded plastic thing over the lifter cover? The outlet of the pump hits it before the mounting flange seats. #2- The outlet is at an angle and higher so the fuel line does not line up.

What is the best way to deal with these problems? Or do I have the wrong pump?

 

[TWorline]

Check out the pictures in BGilbert Readers Rigs or search 6320 piston pump. From the pictures it does take a little bit of work to install. BGilbert list all of the part numbers required for the conversion. Are you sure that you have the pump with the last 4 numbers being 6320?

 

[Rebel Ram]

Yep. Bills got a good pictoral. I thought about hacking into that plastic but figured i had better find out what it was first. (my luck not so good ) Think I'll order the fuel line instead of fighting it.

 

[Bob Beauchaine]

Looks like you're missing the spacer that goes in between the pump mounting flange and the block. With that everything lines up just as sweet as can be. The rubber molded cover covers a little priming pump that you push with your thumb.



You will also have to carve away some of the molded sliencing cover on the lifter cover just above the new pump.



Bob

 

[JStokes]

Just put in a new piston pump

https://www.turbodieselregister.com/forums/showthread.php?t=161198



There is a spacer and two gasket that you need, and you will need to cut away some material up above to make it fit.

 

[Sri Ram]

I donno if this is apropo, but here is a link to a piston pump install at the "other" website. Good luck, and be sure to post pics/tips when you're done.

 

[Rebel Ram]

Well its in. I am glad I asked about the insulation. Thats when I learned about the spacer and two gaskets. My own fault for assuming this was a quick boltup. Glad I did though. Anyway, I found the gaskets and spacer at a local Cummins shop but was having trouble with the Fuel line. They wanted $30. 00 for the line and $20. 00 to get it to their shop? Thats more than I paid for the pump. So with a little "creative forming" i got the stocker to fit fine.

The instructions in the link that Sri Ram posted were excellent as are the pictures in Bill's profile. I didn't see the former till I was done though.

But all in all the problem that started this whole project is GONE!!! I can now put the truck in 3rd gear @ idle and then floor it. She'll pull hard all the way to the 3200 spring. I was getting what felt like defuel at 2500 after I did some VE "Adjustments" :-laf before the big fuel line and piston pump mod. I forget who posted it originally but now my truck is "SEXY".

 

[JStokes]

Where did you get it?

That is cheap for a lift pump. Was it new or used? Where do I get one?

 

[Rebel Ram]

While I was researching this mod I took the P/N and put it in the search window on E-Bay. This one came up with a buy it now price of $45. I did. I did not know they were that much. I got lucky,,,for once.

 

[stakedd]

awsome post!!! dose anybody have a fuel pressure gauge on a piston pump. dose it really flow enough fuel to keep vary thirsty pumps wet?

 

[dpuckett]

stakedd,



Bill Gilbert was making 50psi boost on a dyno run, and saw 30psi fuel pressure Oo. and lots of smoke (unburned fuel). I thought the VE was only good to about 15psi but guess I was wrong. Read his thread about the Scheid 06 Dyno Sheet. the piston pump flows the fuel, along with his VE.



-DP

 

[stakedd]

can you give the inj pump to much pressure? i have been told they are safe at 5 to 15 PSI supply?

 

[therabbittree]

Well I gotta find a lift pump spacer to do my p pump lift pump conversion. . argh I can't find it . . do you guys have a part # for one in case I need to order it monday?

Thanks,

Deo

 

[PToombs]

Spacer #3914284, line #3914753. Deo, good luck with your conversion. Don't forget to trim the bulge on the tappet cover! It is plastic with styrofoam inside, I used a 4" grinder,(tight fit) with a cutting wheel. When you see sparks, stop! Have fun-

 

[CSchafer]

Bill's run at shieds was with an eletric fuel pump and a boost referenced bypass regulator. The therory being to increace fuel pressure along with boost pressure when the pump is really flowing the fuel, to supply it with some more juice. but keeping a lower base fuel pressure. The piston pump puts out somewhere around ten psi I think but it flows enough volume to not drop in pressure with wide open throttle romps on a moddified fuel system(injectors and pump tweaks).

 

[Rebel Ram]

The piston pump puts out somewhere around ten psi I think but it flows enough volume to not drop in pressure with wide open throttle romps on a moddified fuel system(injectors and pump tweaks).

Not!!! Thats what I was hoping for when I started this. But I can pull mine down to 0 at hard acceleration. Could be I have a weak pump but I dont think so. I have 10 psi at idle and cruise but can pull that down easily.

 

[therabbittree]

Really which piston pump did you install? one from a p pump engine or the ve piston pump? I'm doing a p pump piston pump. . I hope to have more then 10 psi I think the p pump piston pump is 28 psi or so. . as for a tappet cover ,I removed it on my old truck . . I may do that on this one too hehe. .

Let me know,

Thanks

Deo

 

[cerberusiam]

I did the p-pump piston pump. I have 12 psi at idle and 5 psi at WOT. It is enough to support 300 HP/800 TQ.



Might be worth upgrading the tank unit and lines to the p-pump sizes to gain some more flow. The 1/4 lines are going to be a bit restrictive.

 

[dpuckett]

I thought the 6320 piston pump put out closer to 15psi at idle/ cruise? I get 8 out of my stock diaphragm pump on a cold morning.



How's your filter?



DP

 

[PToombs]

I put on the same one BGilbert used, 6320. I get 15-16 psi at idle, 10 at WOT. Stock injectors, fuel screw turned in. I also drilled out the banjo bolt holes to 11/64. (or the next size above) The old pump was 5 at idle and 0 at WOT, which is normal for what I have. (said Smokehouse Diesel)