I need input! Let me tell you where I'm coming from on this issue. I ran this 99 of mine 293.000 using it strickly in my transport company. I tell you this becouse every mile put on this rig was put on either going after a load or coming with a load. I put a three thousand doller duel range overdrive on the truck, so I'm not apposed to spending money when it's apropreate. I chose not to go with one of these really expiensive transfer systems for one reason I couldn't justify 2 of them. All my seat time was spent out on the Interstates trying to get every mile under me that I could becouse thats how I was payed. You asked why I felt I needed 2 pumps. Running night and day using any type of a elictric driven pump you had dam sure better have two of them and it had better be installed in such a manner that you can get that rig and load off the highway at night and get it exchanged out. Now you say theres lift pumps out there you dont have to worrie about and I say you better watch out what your putting your faith in. Does anybody want to discuss these pumps I feel I have some idias but I would like to slap them around with you guys.

 

I agree with you on the spare pump. Definite weak link in the engine dept.

Many guys used to, and probably still do, carry a spare "campaign" pump under the seat for just such failures. Relocated to the frame rail under the drivers side, of course. Many have also bragged on their change out record times!!

A spare FASS or AIRDOG would have you over $1500 invested for both, so maybe that would be a reasonable expenditure in your biz, I don't know.

I still think the mechanical CP3's on the common rails are way better, not sure if anyone has tuned one down or they make one for our rigs......

 

Sixslug, can you tell me how to put a sig on my posts? Pretty dumb on these computers.

 

never mind got it!

 

A CP3 is a totally different injection system. It would require a computer change & every component in the injection system. Not even sure if they make common rail injectors to fit VP trucks.

 

If money is not a concern, double up on the best you can find and hope for the best, and, be very upset and broke when one goes down.
If money is a concern, double up on something affordable and keep another spare with you. Expect the worse and be happy when they don't fail very often.

 

You know after owning my truck for over 12 years and running it like iv'e said it still looks and runs almost like a new one I really took care of it. I like my truck now more than ever. I think like everybody when I lost that V/P at 170.000 I was really disapointed , you know after having to figure out for yourself a transfer system that works and all the stuff all of us has to do with keeping a 13 year old truck on the road. My point is after all the changes they,ve made to the V/Ps and all of us learning how to keep them going. I dont think I like all these kids that are winding up with these older rigs running them down becouse of the Bosch system. To me for the first go at a fly by wire computer controlled deisel it seems alright to me. Like iv'e said on other forums theyv'e come along way in figuring out these V/Ps and theres more to it than the old aftermarket pitch of just trying to push more hot fuel at it. At least to me. Maybe this is just yesterdays news im'e talking about, but I know a well maintained 1 ton truck never was and will never be a cheep go. If you dont belive me talk to the guys with the commin rails. Deisels were never ment to be kids toys!

 

Hears what i have to say on the subject. It looks to me like that big H/D FASS might be the way to go, let me tell you why. The 7 to 10 micron particulets in the fuel were all buying is the most abrasive, the fuel you buy might be filtered to 30 microns if your lucky.All gyrator pumps are high pressure pumps with little to no suction, thats the reason there used as oil pumps in engines.I cant see spending the kinda money for these pumps that cant prefilter themselves. This means those 7 to 10 micron particulates are going to be eating away at the shaft and seal that keeps the fuel away from that little D/C motor and it WILL happen it just depends on the fuel and how long it takes. That $687.00 H/D FASS is the only one out that has the capablity to ( PULL ) through a filter and its only capable of a 10 micron all the rest are just water seperators before the pump head. If im'e wrong in what im seeing would someone please show me.

 

I've looked them all over and the FASS seems to be the best option for the vp44. Filters and de-airs the fuel to support the vp and injector nozzles. Its what I have planned for when the money isn't so tight.

To better explain myself on the cp3 idea/thought, I was thinking mechanical/belt driven pump vs the electric might be more reliable and obvious when it went out if somebody isn't running a fuel press gauge.

My truck has the intank lp right now since a warranty repair a few years back. Still pushes at 8 psi (I know its low) so the Fass is next on my list.

It would be my plan to mount the Fass in the usual spot on the frame rail, get a larger draw straw, and upgrade to 1/2" fuel lines and 86 the banjo's. Then mock up a Carter pump to fit the space the FASS takes up, with the proper pigtail, to throw in in an emergency/pump failure, to get her home. It would be cheaper than having a spare fass pump on hand....

Is a FASS pump rebuildable? If so a rebuild kit would be handy to have at the shop..

On the sig, go to "user cp" upper left hand side of menu bar in the bar under the Title block at the top of the page. Scroll down the left hand side to "Edit Signature" and save it when done and you will have it.

 

After my second stock lift pump. I started looking for replacements. The pusher style like the holley or areomotive on the frame rail was one of the supposed good replacements but even they were failing (this was quite a while back) Air dog was just starting to advertise their stuff for the pick up truck market this was previous to the FASS if you know about that family fued. I then found the RASP which was a belt driven mechanical pump worked great never failed except for a front seal (which just weeped and still worked and 15 minutes and $2 later fixed) and it used the stock pump as a backup, the plumbing was a bit much or more than I liked anyway. Then when I put in an aftermarket cam I made sure it had the fuel pump lobe on it. I removed the rasp and installed a mechanical fuel pump from a 12 valve. Again no failures since. The pump is 100.00 and will put out way more fuel than my 400hp will ever need. Parts wise the cam and the pump was not much more if any than a full featured airdog or fass today. It will suck or push fuel through any filter you choose. Want a replacement or spare $100.00. 2 nuts or bolts depending on how you install it and the inlet and outlet fitting a fifteen minute swapout if needed. However those pumps are known to last quite a while and while they do fail it is not normal for them to fail prematurely many have hundreds of thousands of miles on them. No electronics, brushes etc to worry about.

 

Sounds great those old diafram pumps are the standard they should have to work to . Just wandering how did you contol the pressure to the V/P or did it just work out alright ? And I think that leaking on the belt driven job speaks to the problem of the fuel eating up seals and shafts that I feel is such a problem on these electric jobs. Dont think for a menit that they're not aware of the problem!

 

I think you guys can tell I dont know crap about these computers so I dont know if IM'e supposed to do this or not. But I have one of those DIABLO SPORT things I only used it one trip from FL. to AZ. and back. It cost me to much in fuel just took it off been laying in the shop for years, if someone wants it just let me know

 

The 12 valve lift pump will peg my pressure gauge at 40psi so I did use a bypass regulator with it that I have set to 19ish psi. I tried it without the bypass for a bit but the pressure was too great for the stock filter cannister it weeped pretty good so I put it right back in. Which I already had plumbed in with the rasp as it needed one too.

 

I wander why Cummins didn't keep using that style pump? You know I have a check mark on show your signature but it's not working whats up?

 

Your signature only shows on the first post you make on the thread ( once per page ). After that it doesn't, it saves bandwidth on the server.