fuel lines
 

my fuel lines are rotted out should i replace them with the same size lines or should i go thicker? i do plan to replace my pump to eventually too but my lines are leaking pretty bad now so I'm just doing the lines for now.

go half inch fuel rated hose

whit thats pretty big for stock the fittings are only 3/8 if you are planning on bombing the truck then i would get a fass or airdog they come with the 1/2 fuel line from tank to pump
right now with the stock line everywhere else its not going to help you by putting that size line on

yes .....it would require new fittings too....I would look at the fittings and line then yer upgraded there for future:humm:

yeah thats true to if you wanted to do that it would be good so that way if you only wanted to put a pump on it then you would already have the fittings there

Stock is 5/16". 3/8" is plenty for any HP you will ever get out of a 1st Gen. Stainless seamless 3/8" tubing is not that expensive, couple bucks a foot, maybe.

so an air dog pump comes with the lines too?
what am i looking to spend on the pump and lines set? and where should i get it?

yes the air dog pumps come with everything including fitting and gas line.

as for where to get it at, post under the request a price quote area on here. sponsors can take care of you.

ardig 100 or 150's normally go right around 500-520, and the airdog II goes for right around 600

Are you talking about the metal lines from the tank to the front? mine are rusted and leaky aswell. do you just buy the metal line and bend it yourself? if so were do you get it?

just ordered my air dog II 165 from diesel auto power..... $599 shiped as far as i'v been told it comesw with everything you need.... 1/2" fuel line in take moduel, everything..... it's worth the $599.....
oh an to the guy that doesn't thing first gens benifit from 1/2, what makes you say that, 1/2" is a standard upgrade... flows way more fuel....aome of us ARE pushing a lot of fuel to our trucks means we need more flow 1/2" means more flow... i loose fuel press at half throttle with my 95gph fass..... so 1/2" isn't a waste:moon::moon:

Knock yourself out, dude! Fuel system in-a-box/$200 worth of parts = BIG profit margin - go for it! Oh, I forgot, you already tried a FASS and didn't get that installed right, because you obviously still have issues.

Good luck! :w2:

If you are dropping down pressure with a FASS on the truck already... You got problems. I'm laning on my pump pretty hard and I cant get the needle to move off 15psi with just the Walbro392

As for the 1/2 vs 3/8... Ever see the fuel passages inside the pump? Hell just look at the inlet hole....

so whit what is the best way to run the fuel system with the airdog should we bypass the filter housing and what about the fittings on the pump and the metel line is there a guide to doing this

Several big-power first gen guys (yeah, THOSE several) preach 1/2" fuel lines.

I got 1/2" stainless braid.

I don't see how 1/2" lines can benefit anything.

EXCELLENT!

so i guess the air dog is the way to go thanks guys

thise same guys have been inside there pump to open up passages. I ran 3/8" lines on mine, but thats what I had laying around. If I had to do it again... I would run 1/2". do I need them now? No. Will I ever need them? Probably not. But if I do they are there.

yes bypass your stock filter, all teh fittings shoudl be with the pump. Leave teh factory return line from you pump back. Dont mess with it at all.

so if we bypass the filter does that change the anything other than just the filter there what about the wif sensor and throwing codes from not useing that and is there anymore sensors in there and what about the vp and its connections, a good guide to doing this would be great is somebody can from the tank to the vp

i didnt want to lose my fuel preheater so i cut the metal line that comes right out of the pump and installed it right there and out a hose clamp on it. hasnt given me any problems

Other then the WIF light it changes nothing.

That is fine except for one thing, you lost all you gained from going to bigger lines, the stock filter housing is a HUGE restriction.

How cold does it get by you? I dont have a preheater and never had an issue. Coldest its been is in the teens for a few days though.

right now its 17 and it gets colder i have to keep a heater what should i do in this case im in central nc i suppose i need the heater

we see the teens too thats about the coldest it gets here, will it still start without any problems at that temp or will i be cranking on it forever? or is the intake heater more important than the fuel heater?

and whats the biggest issue with it going down to the smaller tube size? will i love flow or pressure?

you'll loose flow....and to the guy that thinks 1/2 inch is a wast.....crank your pump up a little, my fass sucks sorry if i had half a brain i wouldn't have wasted the money on it in the first place!!

It doesn't matter how big the lines are in most practical applications we're talking about here. There are two factors that seem to be getting overlooked all the time. Like has been mentioned, the stock pickup and the stock filter housing represent LESS than 5/16" flow paths. You could run a 10" line through them with a massive pump powered by a locomotive at 1000psi and would not flow much more fuel than the stock diaphragm pump is capable of moving through the same parts.

#2: GPH (GALLONS per hour). You are seriously deluded if you think you need to measure the fuel burned by those DDP injectors in gallons per hour. The amount suppplied needs to only slightly exceed the amount burned in the combustion chambers. Just a little more for cooling circulation through the system is all that is needed. I think it is funny all these guys running the ridiculously expensive FASS and AD setups when all it is doing is retuning most of fuel back to the tank through the regulator.

Get rid of the restrictions and run a pump that is rated at least 40GPH at around 15psi and you will have no issues with fuel supply.

The guy's name is NadirPoint (on here). :tu:

who me? I dont want to crank my pump up, I will lose the reliabilty and great fuel milage...

keep your factory filter and heater in teh loop!

so for 500 hp application the factory filter houseing is ok cuz 500 hp is what i am chasing at the least

Really? Got a dyno sheet? :lol88:

Let us know when you "catch" it!

i did not say i had 500 hp now i am wanting my truck to be able to obtain this i have only owned it for 4 months so i have some stuff to do and as of now my airdog 150 quit working so i am trying tto figure out what type of fuel sytem that i am gonn use to keep reliablity,mpgs, and performance thank you so for your quirky response as if to say i was telling a lie or something like im gonna get 500 hp out of a k&n intake box and a adr but anyways why do you act like 500 hp is not alot i had a grandprix with a 700 hp 3.8 v6 at the wheels 500hp is just what i want as a baseline a couple hundred more than stock is easy my grandma could do it with her rainer

nope, Gonna be a HUGE restriction.

Remember, Pressure is a measue of restriction.... You want volume to go along with teh pressure.

I would get teh Airdog working again if I was you.

i want to go with a new one mine now is a ad 95 i think its kinda old and was on the truck when i bought it and the plate is scratched but i am pretty sure but i was thinking of a ad 150 with all new lines and a straw

Ya think? :lol88:

i think the reason nadirpoint said that was because 500 hp is NOT easily attainable on one of these VE pumps. there are very few out there that have done it, and to be honest, i cant even tell you a single person i know that has. 400hp is kinda the mark you can hit reasonably with MAJOR modifications to your engine. if you want big power like that, the p pump is the way to go IMO

:tttt:no i'm not talking about you....NadirPoint i have nothing against you either don't take any thing personally... i just want as much power out of my first gen as i can get.... as for the ddp's they work...better then stock. however this summer i will be going to a set of 6x0..016's.... i'm not saying my truck has 1000000000000 horse power or that it ever will, but i will have a very powerful first gen when i'm done.i talk to my pump guy a lot we try different things. i reacently have been disscussing the option of punching out certin areas in the pump so it will flow more fuel and ugrading the head to a 14mm head. as for the reliability of the engine, well you can't have everything. but since i own three other trucks i think i can finde something to drive to work if something happons to the ole girl. all i want is to obbtain a goal of a wicked first gen with a rotery injection pump on it. thats all, plain and simple. it just takes time and money. i'm young so i have lots of time. the maoney takes time to get. there for my progress is slow. so i'm sorry if i have offended anyone

Check on DTR -
several are in the 400hp range or very, very close.
Most I know of if KTA - something above 600 - HEAVILY MODIFIED :lol88::lol88:
He's my hero :superman:

There are several that hit 400, a few at 500, and a couple over 600...

well i'm going for 450-500 hp. then its time to by a second gen

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NadirPoint, what you got done to your truck? notice you dont have anything in you sig about it

Too much to bother trying to list. I stopped trying to list them in my DTR sig because it ran out of space. I claim to own the most heavily modded 1st Gen on the planet. Certainly not the most powerful, not even close. But the most mods of all various kinds:

http://stuff.is-a-geek.net/PhotoAlbum/1/Cars/CTD.htm
http://stuff.is-a-geek.net/PhotoAlbum/1/Cars/CTD2.htm
http://stuff.is-a-geek.net/PhotoAlbum/1/Cars/CTD3.html