I have the FASS on mine it run smoother & qiuter had it on for 22.000mi. pressure only drops1lb at full throttle.

 

Where is that quote from?? I've never seen all that stuff from FASS.

 

Haulin,

I believe that quote comes directly from the manufacturer's website:

http://www.acptee.com/dieselpp/pages/fass.html

 

Ok, that is not the FASS site, its the DPP site, the retailer. The FASS site is not so strong on the Hp and savings. I purchased mine based on the fuel supply and the rest would be nice. It did feel smoother, stronger, and helped fuel economy some. Easier starts would not be a factor, in fact if the pressure is high it will be a little harder starting.

I would say that if you already have a high performance system, like Rods fuel lines, you already would have a lot of the benefits. I like the big pump and think it will be well worth it in the long run.

 

The ECM is rated for 1.5 Amps. The FASS runs 7 amps. Problem? yes. BTW, I am selling the kit from Smokindiesel, and just ordered one for my truck.

The FASS taps into the fuel return line, and that's where it sends the extra fuel, and air.

Early FASS kits produced about 9PSI, newer kits coming from Bret, are running,, I recall, ~17PSI? I'll know more when I get mine up and running.

I'm bolting my Fass, to, hopefully, a 520RWHP 24V.

12V trucks can also use the FASS to eliminate air, but cannot use it as a Lift pump/Transfer pump replacement. The FASS cannot supply the fuel pressure a P-7100 needs. Use it as a "pusher" pump on a 12V.

Merrick

 

I don't have firm numbers as I rarely figure the actual mileage. Every time I fuel I am aware of the miles per tank and I am used to using this figure. My mpg would not be very usable for you as it am always loaded very heavy. I never run a tank without loads, best I can tell you is that I can run 200 miles loaded, then running without the trailer for a while I will see 450 miles to the tank. I generally fill at 27, 28 29 gallons.

So far as the capacity of the system in volume goes, the unit puts out more fuel than any engine could use in any circumstance. When I set it up the first time I put the filters on dry, I bumped the ign, went to the water drain to see if it picked up fuel, it did, so I put a pail under the injector end of the hose. I then turned on the key and bumped the starter. It put about 2 gallons in the pail, I considered it bled Hooked it up and started it up. The return fuel at the vent line will not let you fuel it running, it will blow the fuel back as you there is so much return. This return is in the 3/4 vent line that attach's to the fill tube. These units are built for full size 18 wheelers, it is a gear pump roughly the size of the gear pump in a 318 Detroit. With this thing on your truck you will never starve for fuel and by tweaking the spring, you can set the pressure where you want it. Mine is set at 15 idle and it drops to 14 at wot. All regulators and governors will have a certain amount of droop. Generally wot will drop to 14 on a long hill and will then return to 15 after a few seconds of wot pulling.

I checked into this thing before purchasing and found one issue that is cured in this one. The original Preporator and FASS units had the pump vertical and after a couple of hundred thousand the bearings would wear out so the unit was redesigned to have the motor horizontal which eliminated the problem. The Preporator units were designed and the designers son broke away from the fathers business and started building the FASS. The regulator spring, ball (3/4 inch), and brushes are replaceable on the road if necessary, I have these units as spares.

If you purchase a kit, I would suggest two things. Use the #12 wire from the ASD relay for power (+12) and ground FASS at the frame. It is fused at 30 amp and needs no relay. The supplied fitting necks down the input to the VP44 to about 1/8 inch. Drill it out to the diameter of the input end, and you have a larger input. Set up this way, you will have the same key on sequence as the PCM feed only full 12 volts. FASS said that it is not good to let it run at 5 volts which is the reason for the relay, but the ASD feed is better, no need for a fuse, relay or all that wiring.

 

There was a legal battle there,, Father/Son,, with one suing another for patent infringment, but last I heard,, this has been taking care of, and no lawsuits are pending that will affect sales of the FASS.

(Isn't that a long sentance?)

needstotakeagrammerclass,
Merrick

 

that's not what I heard Merrick. I spoke with Charles the other day and he explained ALL about his system and told me about the dispute.

I encourage everyone to call and talk to both parties and choose from there. That's what I did.

 

HID: Sorry my ignorance, but what is the ASD? anti-slip differential? anti-sulphur diesel? a slow diesel? any silly democrat? a super dodge?

ok, the last four where stupid jokes. sorry. my real guess is the first one.

 

From the Tech Facts section of this website.

https://www.dieseltruckresource.com/...n&onlynewfaq=1

Question: ASD
Answer: ASD Auto Shut Down: relay control system used to shut down engine

 

lol,, ok, I talked with Bret.

Two sides to every story, eh?

Merrick

 

Well ofcourse there's two sides! That would be like having cake without ice crea, if there weren't. Could have that now could we!