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Topic: Opinion on alternative to FASS system (Read 558 times) previous topic - next topic - Topic derived from FASS Fuel System Install

Opinion on alternative to FASS system

[unnecessary comment removed - moderator Michelle] Based upon my experience you could have replaced the old Winn 300200 system with a lower-cost (and easier installation) but equally-effective Parker/Racor 790R30 primer/filter. I did that more than six years ago and it has performed perfectly.
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: Alternative to FASS system

Reply #1 –
Quote from: D.J. Osborn –
Congratulations on your FASS installation. Based upon my experience you could have replaced the old Winn system with a lower-cost but equally-effective Parker/Racor 790R30 primer/filter. I did that more than six years ago and it has performed perfectly.

ok.
2000 U320 4010

Re: Alternative to FASS system

Reply #2 –
Quote from: D.J. Osborn –
I'm glad  you're pleased with your FASS. However your results are pretty much what should be expected from your motorhome size and engine. In the absence of  actual side-by-side test results of any FASS installation I still believe you could have saved time and money and had equivalent results by simply replacing the old Winn system with a Parker/Racor 790R30. I remain very pleased with my installation.

Ok  ^.^d  ^.^d  ^.^d

Literally no one is questioning your decision to go with the 790R30, or asked for input on that system in this thread.  We're in here to chat about the FASS system, which is different from the Parker/Racor filter/priming unit in that it provides a pressurized supply of fuel in addition to removing air from the fuel. 
2000 U320 4010

Re: Alternative to FASS system

Reply #3 –
Quote from: evantwheeler –
Ok  ^.^d  ^.^d  ^.^d

Literally no one is questioning your decision to go with the 790R30, or asked for input on that system in this thread.  We're in here to chat about the FASS system, which is different from the Parker/Racor filter/priming unit in that it provides a pressurized supply of fuel in addition to removing air from the fuel. I've never believed in "snake oil" salesmen and I won't start believing now unless I've been seen *actual documented* test data!

I see a significant advantage in adding FASS to a Cummins 8.3 CAPS setup. However I don't understand the cult-like following of tha FASS in other applications since I have *never* seen any documented test results of mileage or performance improvements after installing the FASS. It seems to be very much like the AMSOIL situation where the believers believe without any real documentation!
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: Opinion on alternative to FASS system

Reply #4 –
Got my popcorn out!
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Opinion on alternative to FASS system

Reply #5 –
Quote from: D.J. Osborn –
I see a significant advantage in adding FASS to a Cummins 8.3 CAPS setup. However I don't understand the cult-like following of tha FASS in other applications since I have *never* seen any documented test results of mileage or performance improvements after installing the FASS. It seems to be very much like the AMSOIL situation where the believers believe without any real documentation!

I never really gave the CAPS system much thought other than a few guys asking me witch system I had on my coach until I read the post about how much money it will cost to repair/replace, I mean 10K come on Cummins. After some research I decided to install the FASS system to supply fuel under pressure to the CAPS lift pump. Sounds logical and if it does lessen air in the system bonus. At less than 10 percent cost of the Caps. I don't expect any mileage or HP gains, not much of a snake oil believer. If it gives me peace of mind then so be it. Jim. 
Jim and Dona
2002 U295 36'
Lily, blue healer. Our fury person
Manx mid travel Ecotec turbo
2022 Bronco badlands Sasquatch
Trail 90 and 110cc

Re: Alternative to FASS system

Reply #6 –
Quote from: D.J. Osborn –
I see a significant advantage in adding FASS to a Cummins 8.3 CAPS setup. However I don't understand the cult-like following of tha FASS in other applications since I have *never* seen any documented test results of mileage or performance improvements after installing the FASS. It seems to be very much like the AMSOIL situation where the believers believe without any real documentation!
Well I see having positive pressure to any given Hi pressure pump as an advantage. Not just during a prime cycle. I know for a fact that my ISM (non CAPS)  would draw 13 inches of vacuum under load. Replace fuel lines and that number went up. Yes it's not required or needed but just makes sense to me on my coach. Yes the FASS will be doing the work of supplying fuel to the pump in excess which will add to ECM cooling. Guess changing other fuel injection pumps do to failure of the lift pump has biased me. I still have the Winn filter and prime pump and it works perfectly for me. Possibly once the dust settles after installation someone will want to pay shipping or pick up at Q? David, you have a ISM similar to mine so its probably would never be an issue for you. CAPs is a whole different deal and is not an apple to apples comparison for you or me.

Re: Opinion on alternative to FASS system

Reply #7 –
Well, I just spent 2 weeks and 9K on a rebuilt X2 ( the first rebuilt was defective) caps pumps. The one that failed was 10 years old. Fuel filters on my coach are changed 2x a year. The first pump failure Was due to a leak, this one was due to electrical components failing. When I get back to my home base I'll be installing an air dog transfer pump in place of the Cummins intermittent fuel pump, just for piece of mind. In ten years I have had 15K worth of CAPS fun. Yes fuel lines are 4 years old.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Opinion on alternative to FASS system

Reply #8 –
I didn't put the Fass Fuel System in for better fuel economy or more power but for the constant
fuel cleaning and constant fuel pressure. I put a fuel cooler in a few ago and I was down to 1/4
of fuel in the tank and the tank was just warm after about 4 hours of driving.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Opinion on alternative to FASS system

Reply #9 –
Quote from: oldguy –
I didn't put the Fass Fuel System in for better fuel economy or more power but for the constant
fuel cleaning and constant fuel pressure. I put a fuel cooler in a few ago and I was down to 1/4
of fuel in the tank and the tank was just warm after about 4 hours of driving.

Curious - is there a fuel tank temp sensor on our coaches, did you add one, or just going by feel/touch?
2000 U320 4010

Re: Opinion on alternative to FASS system

Reply #10 –
I have a Fass system to install for the same reasons as Oldguy. I will be installing a visible fuel strainer before the FASS. I want to keep the big stuff, the occasional tree stump or kitchen sink, from reaching the filters. Yes I am paranoid!

Tim
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine Beast (AKA Pup)
Columbia, MO
1996 U320 4000
2021 Jeep Gladiator, Diesel

Re: Opinion on alternative to FASS system

Reply #11 –
Quote from: bbeane –
Well, I just spent 2 weeks and 9K on a rebuilt X2 ( the first rebuilt was defective) caps pumps. The one that failed was 10 years old. Fuel filters on my coach are changed 2x a year. The first pump failure Was due to a leak, this one was due to electrical components failing. When I get back to my home base I'll be installing an air dog transfer pump in place of the Cummins intermittent fuel pump, just for piece of mind. In ten years I have had 15K worth of CAPS fun. Yes fuel lines are 4 years old.

Sorry to hear you had a CAPS failure. Did the pump itself cost you 9K or did that include labor? Mine was 7K from Cummins, not including the labor.
Dave and Kathy Bennett
2004 U270
Build #6253
1600W Solar
700 AH Battle Born Lithium
2015 Jeep Wrangler

No matter what happens, remember you always get the trip out of it.

Re: Opinion on alternative to FASS system

Reply #12 –
I put mine in for the common reason of Caps failure, and hoping it would never happen to me. Sure enough right before install my lift pump started leaking. Glad I did it when I did. The decision was solely to ensure I possible never had a CAPS failure. Had nothing at all to to do with any performance claims. But I did see some.

I also researched the Airdog system. But chose the Fass as it had a longer reputation. For those that dont know Fass used to be a father son run company. Difference in opinions of business I read, But AD is owned by the son.

It cranks quicker, idles and runs much smoother than it did with just the OE  lift pump. Very noticeable first time I cranked after install.

I used to as best see average of 7 mpg, not computer based but real world, fill tank/miles math. Since then easily 8-9. I avg 65 an always tow a toad.

The System supplies way more fuel on the discharge side than the engine needs, large percent of it returns to the tank polished and does so constantly. Any not used by the fuel rail also still returns to the tank. ( I have 2 fuel returns) Fass titanium recommended install method
Mike in AL
2001 U295
8.3 ISC 350
Build 5918

Re: Opinion on alternative to FASS system

Reply #13 –
Quote from: dbennett9 –
Sorry to hear you had a CAPS failure. Did the pump itself cost you 9K or did that include labor? Mine was 7K from Cummins, not including the labor.
Cummins wanted 9K+ for a  rebuilt plus labor well past 11K. 9 k includes towing, diagnostics, installation private shop.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Opinion on alternative to FASS system

Reply #14 –
Has anybody that has installed a FASS or Air Dog system had an injector pump failure?
1999 36 ft U270
Build 5465

Re: Opinion on alternative to FASS system

Reply #16 –
Quote from: bbeane –
Cummins wanted 9K+ for a  rebuilt plus labor well past 11K. 9 k includes towing, diagnostics, installation private shop.
Wow. I thought the 7k Cummins charged me was excessive. Did the shop replace the transient suppressor? If it isn't working properly and you have a fuel pump problem the ECM can go as well. That is what happened in mine. The transient suppressor had never been replaced so when the CAPS pump died it took the ECM with it.
Dave and Kathy Bennett
2004 U270
Build #6253
1600W Solar
700 AH Battle Born Lithium
2015 Jeep Wrangler

No matter what happens, remember you always get the trip out of it.

Re: Opinion on alternative to FASS system

Reply #17 –
Suppressor was replaced, with rebuilt pump. ECM 3 years ago.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country