Jump to content

Fass or Not

Posted

:ahhh:            I been reading so much my head is about to explode. I went to Thoroughbred Diesel and looked around and still don't know anymore now than when I

was reading here. So when my airdog dies, get a fass or not.
 

  • Replies 27
  • Views 3.9k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Posted Images

Featured Replies

Fass or mechanical. I prefer fass personally, as I have experience with them

    •
    • Like 1
    • Author

    I lost my card for the airdog so I know its coming and I don't even want to deal with airdog anymore. My AD100 took a nose dive and so I did the warranty thing and up graded to the 150. So throwing good money after bad I just don't do anymore. Fass  pitches a good line of talk I just hope that's not all they are.

    I've had no issues with the FASS.  I never had any problems on my Air Dog on my 2000 but I did not care for the install as much as the FASS.  

     

    FuelLab also looks interesting, but its not conventional technology.  

    I'd say FASS also, AD customer service isn't great lately and IMO FASS is better built, it's definitely larger with bigger gear rotor and filters, also uses 1" instead of 3/4 thread for filters. I'm talking about new titanium 150, that's what I just got. One problem I had first day was ball and spring, causing pressure fluctuations at idle, called FASS and they sent me new ball and spring for free. I modified the spring so the ball doesn't sink in it. So far no problems.

    I've had no issues with the FASS.  I never had any problems on my Air Dog on my 2000 but I did not care for the install as much as the FASS.  

     

    FuelLab also looks interesting, but its not conventional technology.  

    Fuel Lab doesn't play well with our ECM. I would advise to stay away from them

    • Owner

    If my AirDog 150 dies I'm going for a full FASS 150. But I'll call Eric at Vulcan Performance then order me a full fitting and hose kit for remote mounting the pump. I will install the FASS in the bed wall. This will allow for guarding the filters, keep the filters out of the direct cold wind and keeping the pump close to the fuel tank.

    •
    • Like 1

    If my AirDog 150 dies I'm going for a full FASS 150. But I'll call Eric at Vulcan Performance then order me a full fitting and hose kit for remote mounting the pump. I will install the FASS in the bed wall. This will allow for guarding the filters, keep the filters out of the direct cold wind and keeping the pump close to the fuel tank.

    I can't believe seal on you're AD isn't leaking yet with all of the hours you have on it. Be interesting to see internals ones it goes bad, how bad it's grooved on shaft and brushes.

    I can't believe seal on you're AD isn't leaking yet with all of the hours you have on it. Be interesting to see internals ones it goes bad, how bad it's grooved on shaft and brushes.

    Mike has the old school one... The good one. It's the new design that's bad

    Mike has the old school one... The good one. It's the new design that's bad

    So what seporatets electric motor and fuel?

    I guess if there is a seal there should be a grove, maybe they used better seal back then. And if so I would love to know what kind of seal it is.

    Now it's an O ring. Not sure what they used to have?? Maybe an O ring then too, but I did read the machining of the housings was outsourced to china, and the quality went in the tank.

    • Owner

    Dang, is that how big the Fass is to date?

     

    Yes. That is actual size of FASS vs. AirDog. That was one of the reasons I didn't buy a FASS was the pure size was hard to hide on our trucks.

    • Author

    If that's how big they are today, heck I'll have to mount it in the bed somewhere. Good thing I got a flatbed I guess.

    Have you seen them tucked up on the bed bolt where they are supposed to be mounted?  I wouldn't be scared to put one there. Also, the fass has larger filters so it can flow a higher volume at a given pressure without as bad of flow drop like the airdog will have

    Have you seen them tucked up on the bed bolt where they are supposed to be mounted?  I wouldn't be scared to put one there. Also, the fass has larger filters so it can flow a higher volume at a given pressure without as bad of flow drop like the airdog will have

    If one is maintaining the pressure it is set at volume of flow means nothing. Pressure = resistance to flow, one can have a pump that is capable of 1000gpg but if it only needs to supply 14 psi what good is it?

     

    I have been going to hydraulics classes for 25 years and the old school thought of teaching flow flow flow has been thrown out long ago where flow meters were the norm and flow was taught extensively, now I think most flow meters have long since been thrown away as all the science in the world can not overcome the simplicity of pressure being a result of resistance to flow, no pressure = you have a major leak, pressure regulating issues causing a bypass or return or pump issues not supplying enough flow.

    Go to topic listing