2nd Gen Non-Engine/Transmission your LP fix opinion

[AWeik]

id like to get rid of the faulty stock lift pump set up, my question is... . should i go with a FASS system, or use a FASS fuel pump and vulcan bigline/relocation kit? the cost is almost the same but what are your feelings with the fass system. do i really need it?

 

[rweis]

I went with a RASP with larger lines (AN-6). Simple, effective, no brushes, no fuses, not afected by temperature.



Bob Weis

 

[Cummins Thunder]

I am running the Hot Rod Diesels Big line/Pump relocation kit. I say keep the stock LP and relocate it.



CJ

 

[AWeik]

rweis, how do you like the rasp? does it completly eliminate the LP and stock filter? looks like a good set up.

 

[FourBarR]

I have given some thought to all these fuel mods. the only thing Ive done is move the oem pump back by the tank. I didnt increase the size of the lines, remove the banjo bolts , up grade the banjo bolts etc. have the original vp-44 now with 410,000kmsor 246000k. still working well. fuel pressure is 16 p. s. i. at idle, 13 p. s. i. at 70m. p. h. and 12p. s. i at wot. these pressures verified with my certified aircraft fuel gauge. not planning any changes to the fuel system and see how long the vp-44 will last.

 

[PC12Driver]

About a month ago I made a trip out to Ohio to buy my motorcycle. About 50 miles into the trip my fuel pressure started dropping. At about 100 miles it was pretty clear that my pump wasn't going to make it the rest of the 250 mile trip, and I wasn't going to run my brand new VP44 at that low of pressures (2-3 psi) for the 100 miles back home. So I pulled off at the next exit to figure out what I could do.



As luck would have it, there was a Freighliner dealership at that exit with a big 'ol friendly blue "C" on the front sign. I went in with my engine number and picked up a new pump, then drove down the road to a Menard's and bought a cheap set of metric wrenches and a pair of pliers, and swapped my pump right there in the parking lot (while it was snowing, of course). I was back on the road in 45 minutes. I couldn't have pulled this off if I had a FASS or the like. I guess you could argue that the FASS may be more reliable, but it still is an electric pump that can quit at any time. And there's no way I could have had a replacement pump in my hand for one of those within 15 minutes, on a Saturday, while on the road.



So, as you can tell, I'm a fan of keeping the stock pump and modding the lines. I get about 16. 5 psi at idle, 15 psi cruising, and never less than 10 psi at full throttle (465 hp, one pump in stock location, -8AN lines). I am thinking about relocating the pump back down by the tank though, to maybe add some longevity and make the pump a little easier to get to.

 

[Rman]

I have a FASS II, and am very pleased with it's performance. I also left my original LP inplace, and sealed off the stock fuel line to the tank. I left the fuel line from the LP to the Fuel filter and sealed it off as well. That way, if the FASS does quit, I woul still be able to run the stock system to get by until further repairs were accomplished. I've thought of hooking up ball valves, but figured it wouldn't be worth the trouble. I'll be wrenching either way, undoing a couple lines won't hurt.



I took out all the stock fuel lines after the fuel filter. Use -8 AN fittings and hose to the VP-44. I used the supplied hose and fittings with the FASS II.



I ran the stock pump with modded lines for a long time though. I just got sick of replacing the LP, it would have been my third, but I opted for a FASS, keeping the ability for the stock LP to be used.

 

[TGibbs]

Rasp

For the differenceof the RASP, it seems like you spend a little more know and get the safety of mind that you dont have to worry about brushes or the stock pump going out and not have to worry about over pressure on the VP either.



I have had mine on now about 12K or so and never had a problem and have never had low fuel pressure either with the 100hp sticks and comp!



Tristan



P. S. Olee Poole has a sweet setup, best customer service I have seen in a while!

 

[DieselRam30]

Another vote for the RASP. It's a little more expensive, but definitely worth it IMHO.

 

[Fishin Guide]

Not the cheapest fix. But, 12 valve mechanical pump.



Dave

 

[NoSeeUm]

Not the cheapest fix. But, 12 valve mechanical pump.



Dave

My next move I think... .

 

[Cummins Thunder]

The VP don't seem to like the pulses created by a 12V LP



CJ

 

[Fishin Guide]

The VP don't seem to like the pulses created by a 12V LP



CJ

Has your pump killed some VPs? Mine is still kicking.



Dave

 

[JerryHammock]

As the saying goes, thats why they make chevys and fords, or in this case dodges.



My fix came in the way of the stock type pump,[carter replacement, from Oriellys], the vulcan relocate/ big line kit, and a "tee" fitting in the top of the filter housing where the fuel pressure sender goes. I put an elbow in the "tee" so that the sender is pointed down, and the air stays out of it, and goes to the top of the "tee", where I have a a-n cap, and can bleed the air out of the whole thing.



I also have the superchips programmer. It reprogramed the lift pump cycle at start up to just a short run, instead of the approx 15 second run that I used to have.



I like the stock type pump. I dont have a hotrod truck, but I pull some pretty big loads, and I cannot pull my pressure down below 8 psi. These are cheap enough {HA HA} to carry a spare, or else get one at any Oriellys if it goes down on you. With the Vulcan kit, they are easy to change.



There have been some great points made in this thread, and everybody has their own fix. This is mine... ...

 

[NoSeeUm]

The VP don't seem to like the pulses created by a 12V LP



CJ

You have some experience in this?



I was going to get one of the F1 special 12V pumps.



Jim

 

[Fishin Guide]

You have some experience in this?



I was going to get one of the F1 special 12V pumps.



Jim

That's what I am running.



Dave

 

[RMecum]

Rasp!!!

RASP it and forget it! 18000 on mine... . hasn't dropped below 12 psi... no matter what power setting. Turns so slow it'll probably never wear out. Spare belt in the tool box and Olee set me up with an awesome set of hoses/plumbing. I'm very happy with it.



Mike