Fuel heater on 3rd gen?

[Drewhenry]

I'll soon be getting an Airdog installed on my truck. My friend/dealer tells me it may require bypassing the fuel heater. I didn't know 3rd gens had a fuel heater. Am I getting bum information? I don't plan on being in ridiculously cold climates anytime soon, but is this something to be concerned about?

Andy

 

[Vaughn MacKenzie]

Yes all 3rd Gens have fuel heaters integrated in the filter housing. If they're saying to bypass the fuel heater then they also mean the stock fuel filter, unless they have you confused as having a 12-valve. Where you're at I wouldn't see a problem with not having the fuel heater.

Vaughn

 

[Drewhenry]

yes bypass the stock filter

Vaughn,



We will be bypassing the stock filter. Supposedly if we route through the stock filter it will impede the output of the Airdog and I will not get the full benefit. I can't seem to find a way around this. If anyone out there knows how to run through the fuel heater and bypass the stock filter I sure wouold like to know.

Could I run fuel from Airdog to stock filter housing without a filter element present? Would this still prevent the full capacity of the Airdog pump????

Andy

 

[cerberusiam]

Supposedly if we route through the stock filter it will impede the output of the Airdog and I will not get the full benefit.

The full benefit of how much HP? That will probably be the detemining factor. If you ar elooking for big HP then you will have to bypass. If you are looking for 500 or less I doubt you will be able to tell the difference. Geno's has the biggere banjo bolt kits that wil help with the flow and if you replace fuel line from AirDog to filter housing you should be good.

 

[Drewhenry]

HP not goal

I am really not interested in more power, at least not right now. Mostly want cleaner fuel and to remove the dissolved air. What about running to stock housing minus stock filter?

 

[cerberusiam]

I am really not interested in more power, at least not right now. Mostly want cleaner fuel and to remove the dissolved air. What about running to stock housing minus stock filter?

Thats a good question. The lid seals with a o-ring so about the only thing you might loose is the water trap from possibly too much turbulence in the housing. The Airdog I assume has a water trap filter so I can't see a downside but have not tried it yet.

 

[Vaughn MacKenzie]

Andy doesn't the Airdog have a fuel heater integrated into it? What about water-in-fuel sensing? I don't think you'd want to lose the water-sensing feature.

I think the banjos are the biggest restriction in and out of the stock filter canister. You can solve this by getting banjo bolts with bigger holes, or drill your own a little bigger. Or better yet get rid of the banjos and get AN fitting adapters and put AN fittings on the fuel lines to connect to them. That's what quite a few guys have done.

Vaughn

 

[cerberusiam]

Andy What about water-in-fuel sensing? I don't think you'd want to lose the water-sensing feature.

On the other hand, THAT sensor is so notorious for not working I am not sure anything is lost by bypassing it. :-laf



I would rather trust the water sperator with no light in the AirDog than the factory sensor.

 

[Drewhenry]

Airdog has a low pressure sensor. Not sure if it has a fuel heater. I have not been able to find info on their website about a fuel heater.

What would be detrimental about bypassing the fuel heater? Wouldn't cooler fuel be more dense and thus deliver more BTUs? If I were to move to an extremely cold climate I could always reroute, right? I am a diesel dummy, so help me out here guys(and gals). What will the drawbacks be to not having heated fuel?

Also will I need to disable the heater(fuse pull)-I assume it is electric?



Andy

 

[AH64ID]

The fuel heater is there to help with flow, warm fuel flows better, especially thru the filter. . The temp wont affect power as the fuel will get heated sufficiently when pressurized to thousands of psi...

 

[cerberusiam]

The fuel heater is there to help with flow, warm fuel flows better, especially thru the filter. . The temp wont affect power as the fuel will get heated sufficiently when pressurized to thousands of psi...

On the contrary, its does make a pretty significant impact what temp the fuel is when it is injected. Optimal temp for HPCR systems is 80-110 degrees F. That is where the best BTU's are gained on the burn. Temp too high and thins the mixture for combustion, too low and injection is late and low. In addition BTU's are wasted brining the fuel up to combustion temp at injection.



The FASS has a fuel heater option but not sure about AirDog.

 

[rbattelle]

I continue to use my stock filter arrangement specifically because it has the heater (and because I paid for the assembly, so why not use it?). But I'm in a cold climate and don't want to chance a frozen fuel problem.

I don't understand why AirDog thinks there would be any loss of "benefit" (whatever that is) by plumbing their system through the stock canister with the stock filter in place. I think that would work just fine.

Even without the stock filter in the canister I think it would work fine.

Ryan

 

[Drewhenry]

Ryan,

My understanding is that the stock system will restrict the output of the Airdog. This is coming from my dealer/friend, maybe he is misinformed. We are thinking the stock filter housing will act as a "choke-point" and not allow the full amount of fuel per hour provided by the Airdog. Anyone with factual information that can help clarify this will make all of us more informed.

Thanks



Andy

 

[CumminsBu]

The choke point maybe going from the 3/8" Airdog line to the 1/4 stock fuel line on the bottom of the fuel canister to the CP3. If you run less than 100hp over stock levels you should be fine. If more you will need to upgrade the 1/4" hard fuel line to 3/8" line, hose or something like the Glaicer Diesel Big Line Kit. The AirDog is a gear fuel pump and should have no problems push fuel though the stock 1 PSI drop filter (then clean. )

 

[HOBrian]

The stock fuel heater is used to keep the stock filter from waxing in cold climate. Since the AD uses it's own filter the stock fuel heater is not needed. IMHO.

 

[JStieger]

Maybe this thread will help you out?



https://www.turbodieselregister.com...03-2007/179153-added-fuel-heater-gdp-kit.html

 

[Drewhenry]

Vulcan Solution

Well I did it. I ordered a Vulcan 1/2 inch ID fuel line with the necessary adapters to go from the filterhousing to the CP3. I will plumb the fuel line from AirDog to the stock housing. Problem solved.

Thank you for all of the informative information ya'll provided.



I promise to write again as soon as I have another problem

Andy