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Fuel System, Air, Exhaust, & Emissions Upgrades Discuss upgrades to the Duramax fuel system and air system. Bigger turbochargers, more turbo chargers, air boxes, exhaust systems, emissions systems, and fuel pumps all go here.
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Old 10-17-2018, 10:18 AM   #1 (permalink)
diesel625
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Kenedy pumps

Got a 2016 lml dually and was thinking of running the Kenedy pumps instead of a FASS or airdog. Not looking to run tunes or delete. I just want to prolong the life of the cp4. How do they compare to a raptor?

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Last edited by OkDually; 10-17-2018 at 10:20 AM. Reason: prefix
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Old 10-18-2018, 10:58 AM   #2 (permalink)
Rvn4me
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Here’s a few quotes and there’s many more if you search.

Your always going to get everyone’s opinion what is better.
You can find bad reviews on every pump but I’ve never seen one for Kennedy’s

“Running a Raptor and it is so noisey it drives you nutz. It has to have rubber isolators on it's mounting pts. It pumps OK and that but the other option for better money and service and vendor buys is Kennedy's real quiet and he will kit you up on your needs. Not one bitch anywhere on Kennedy's pumps I have seen in yrs. of reading so that's not bad. It's better deal on the Kenn. kit from this view if done again”

“Raptor is like the PPE pumps, on or off. Not like Kennedy’s pumps always flow through.


“my raptor **** the bed this morning at -5*F had to by pass it and cover my hands in freezing diesel.
only had it a little over a year. will be calling for info on the warranty tomorrow”


Last edited by Rvn4me; 10-18-2018 at 11:10 AM.
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Old 10-19-2018, 06:57 PM   #3 (permalink)
D_R_C
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I copied and pasted this, from Thoroughbred Diesel.
(The Raptor 4G is the entry level fuel system that delivers performance on a budget.)
Thatís what your getting a entry level fuel system on a budget, that apparently doesnít have a flowthru design.

Kennedyís very popular, like Rvn4me said, when I bought my AirDog FP100 I was impressed with getting everything you need including factory connection hose and fittings to make the install very easy along with 2 filters, 1 water separator 2nd fuel filter for one price.

Lifetime warranty with AirDog on the motor, mine got a little weak after 4 -5 years.
AirDog replaced it with a 4G100 motor which is very quiet N/C.

Both of the motors Iíve had was a flow thru design, I have a switch in my cab to shut off the LP, which Iíll turn it off at a car wash, shops working on my truck.
Many times Iíll forget to turn it back on, it runs just fine without the LP running.

I know people that have Kennedy, AirDog and FASS, mostly happy, Iíve probably read more complaints on the FASS than AirDog, none that I can think of with Kennedyís.
The AD Raptor Iíd stay away from, from what Iíve read.
But the Raptor name does sound kool.
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Old 10-20-2018, 12:08 AM   #4 (permalink)
sfcjones
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Kennedy Pumps is what I use...
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Old 03-26-2019, 09:07 AM   #5 (permalink)
LB7duramaxJosh
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Does the Kenedy lift pump remove the aeration in the fuel or just supply low pressure fuel to CP3?
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Old 03-26-2019, 11:32 AM   #6 (permalink)
ShopSpecialties
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Quote:
Originally Posted by LB7duramaxJosh View Post
Does the Kenedy lift pump remove the aeration in the fuel or just supply low pressure fuel to CP3?
Kennedy is high volume, low pressure with no return line.

On old mechanical injection you had low pressure injection pumps and the fuel pressure would actually pop off the injector. So on those old systems it was very critical that all air was removed for proper operation of the fuel system. Fast forward to today where we have common rail fuel systems with high pressure injection pumps and electrically controlled injectors. Air in the fuel is not nearly an issue today as it was in the past. When it concerns common rail systems the whole removing air from the fuel is over hyped marketing to make sales.
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Old 03-27-2019, 03:13 PM   #7 (permalink)
snowman22
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I had a FASS150 on an old truck and now run dual Kennedy pumps on my LML. I wouldn't ever go back to a FASS. The other part I did like was the oil pressure switch to keep the pump from running unless the truck is actually running. You could obviously do it with any pump, but his kit made it easy.

In your case you could just run his single pump set up.
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Old 03-27-2019, 04:15 PM   #8 (permalink)
LB7duramaxJosh
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Thanks for the info. I'm guessing the Kenedy pump kit comes with everything needed to install? I read a few older posts that sounded like you had to supply some fittings.
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Old 03-27-2019, 04:46 PM   #9 (permalink)
OkDually
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Quote:
Originally Posted by LB7duramaxJosh View Post
Thanks for the info. I'm guessing the Kenedy pump kit comes with everything needed to install? I read a few older posts that sounded like you had to supply some fittings.
The kits come with everything you should need for a standard pickup truck:
https://www.kennedydiesel.com/catego...ubCategory=157
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Old 03-29-2019, 10:34 PM   #10 (permalink)
LBZjunkie
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I'd double up the Kennedy, I started with one but on a hard acceleration it will start pulling a vacuum on the system so I doubled up on the pumps, haven't actually checked it to see if both pumps will keep a positive pressure or not, anyway for the limited high rpm heavy pulls I make I'm good with the results. Quite, can't here them running, a huge bonus.

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