2g awd high flow e85 fuel system design

[xe0]

With the release of the walbro 450lph e85 compatible fuel pump, finally us 2g awd guys can run a single pump for 600-650whp on e85. In designing the system, the biggest problem with running new fuel lines is the bastard design of the 2g awd fuel sending unit. I originally had a -6an bung welded on in place of the factory feed (since you can't fit a -8an bung and maintain factory fit) but don't want to have a restriction in the system anymore.

So my question is, I've seen people talk about using -8an bulkheads and just drilling em out to fit the pump but has anyone actually done this on 2g awd with pictures? I'm ready to start buying fittings and plumbing the system but want to confirm before I decide on more expensive routes.

 

[ishnish]

I'm looking into this pump as well and wondering what needs to be done in order to run it. I can't believe there aren't any threads about this pump on our forums. I was lucky enough to find this one .

 

[xe0]

I'm looking into this pump as well and wondering what needs to be done in order to run it. I can't believe there aren't any threads about this pump on our forums. I was lucky enough to find this one .

I have done a little research and this is what I've found out so far. The wally 450 will mount in tank the same as a 255lph would so there isn't anything special required to adapt it.

They seem to have just starting selling it at vendors and I haven't located a specific 2g install kit but extreme psi has it with a universal install kit
Wally 450lph

Still haven't had any luck finding anyone who's running -8an bulkheads off factory 2g awd fuel sender. Would love some help in that arena

 

[Hal]

Still haven't had any luck finding anyone who's running -8an bulkheads off factory 2g awd fuel sender. Would love some help in that arena

Look harder

 

[xe0]

Look harder

Nice! Did you just ream out the bulkhead to fit the outlet? Were you able to keep float and return stock?
Any reason you didn't run a 90 like this ? FBM2083 / FCM2083

Thanks for your help.

 

[Hal]

Forged fittings like that (as opposed to tube style) don't flow as much.

 

[ishnish]

Still haven't had any luck finding anyone who's running -8an bulkheads off factory 2g awd fuel sender. Would love some help in that arena

What's the reason for wanting to go with the -8 instead of the -6? Is it more difficult to run with the -8? Is it for more volume of flow?

I would think -6 should be plenty enough.

 

[Hal]

A -6 bulkhead fitting is too small to convert to a pump end fitting.

Hal

 

[ishnish]

Wouldn't that make it harder to work with? This means you're now working with -8 lines correct? Cause I planned on welding a -6 AN bung just like xe0 did

 

[kidtsi]

From what i know the fuel pump is not compatible with e85.

 

[ishnish]

The 450 LPH? Are you looking at the same pump? "WALBRO 450 LPH FUEL PUMP (E85 HIGH PRESSURE INTANK PUMP) #24456"

 

[Hal]

Wouldn't that make it harder to work with? This means you're now working with -8 lines correct? Cause I planned on welding a -6 AN bung just like xe0 did

Just get an inverted flare to -6 adapter fitting, no welding needed

 

[ishnish]

I thought I read somewhere that for a 2g, you need to weld if you wanna use AN fittings. I thought drilling was only an option for 1gs.

 

[Hal]

People have been using A/N on 2g's without welding since the late 90's

 

[xe0]

What's the reason for wanting to go with the -8 instead of the -6? Is it more difficult to run with the -8? Is it for more volume of flow?

I would think -6 should be plenty enough.

The reason to go with -8an feed is my fuel requirements (700whp on e85). In addition to that, there really isn't much benefit from changing the factory 2g feed to a -6an since the factory hardline flows roughly the same.

From what i know the fuel pump is not compatible with e85.

The walbro 450lph and walbro 400lph are not the same pump. Walbro originally released the 400lph, which has given some people issues that are running e85. In order to correct this, they redesigned the pump using e85 compatible materials thus the walbro 450lph was born.

Just get an inverted flare to -6 adapter fitting, no welding needed

Hal what fitting did you use on your sender? What -08 an fitting would you recommend for the walbro 450lph?

 

[ishnish]

Also I'd recommend the -6 kit, we've made a lot more then 600 with -6 line. -8 is great but it's a whole lot more volume....something a single pump might not keep up with as good as it would with -6. If you decide to go the duel route, then by all means go for it.

Just my opinion.

I'm pretty sure -6 should run me pretty well. Just some info I thought you'd find interesting.

 

[rr06rs]

Look harder

What is this picture of? Is the plastic outlet of the pump just stuffed into the bulkhead fitting???

 

[Hal]

The bulkhead fitting is machined to accept the fuel pump and replaces the oem socket on the hanger.

So, no it's not "just stuffed" into a bulkhead fitting.

 

[hediki12]

this is how im doing my double pumper for my 1 g and while ive never done it to a 2g i have seen 2g assemblies and dont see why its not possible. i have a 90* -8an bulk head (use a straight, 90* no bueno for flow) get teflon washes drill a big a$$ hole so it can fit in your going to need a drill bit either 3/4 inch or the ones that shape like a "v" so you can open the hole up as u drill with out changing the bit. now use a -8 to 3/8 barb adapter , this is where its all theory for me. most fuel pumps use 5/16 outlet so, me personally ill be using the 5/16 hose that comes with the pump and praying to god i can stretch it over the 3/8 barbs maybe a little ky and heat will help haha. good luck, if that they make -6 to 5/16 barb fittings too if you just want to do that and keep your -6

Aeroquip Socketless Brass Fitting #8AN to 3/8***NEW | eBay

-8 AN 90 Degree Bulkhead Male W/ Nut Black PRE-60833BLK | eBay
8 AN Bulkhead Teflon Sealing Washers 4 Pack PRE-79089-4 | eBay

 

[gsxtasy]

Alright, so is this single pump now the best(easiest) option for e85? Would placing an 044 in-line hinder or help the performance of this pump? I imagine it would hinder the flow more than it would help, being that the 044 would then be the pressure pump and the in-tank would primarily just be a lifter pump. Would that be right?

 

[turboglenn]

I've seen too many posts with people already hitting the flow limits of this pump on E85 and it seems to be sooner than when running 2 wally 255's either in parrallel or series.. think i'll stick with the old tried and trued for now until i see more people flowing big fuel flow with the 450

 

[ishnish]

I've seen too many posts with people already hitting the flow limits of this pump on E85 and it seems to be sooner than when running 2 wally 255's either in parrallel or series.. think i'll stick with the old tried and trued for now until i see more people flowing big fuel flow with the 450

Could you post a link of those posts?

I can't seem to find any info on this pump. Are you sure you're not referring to the 400 lph walbro? Eviltsi runs the full blown twin fuel pump hanger and he states it's a pain in the a$$ to work on and doesn't recommend it to anyone..

For 600 there's no reason for a duel hanger with the 400lph pumps out now if you only want 600hp....if you think theres a possibility of ever wanting more than that, then yeah, do it once. Truthfully I hate my fullblown hanger.... We've made 590ish wheel on multiple cars before the the 400s are done with e85, and we've yet to have a problem with any of them. If you have a pump in the car youll be fine to 450ish as stated, so you can wait for the e85 compatible one if you want the piece if mind. These pumps shit all over everything.

If the 400s can handle that and aren't even e85 compatible, then I'm sure these new ones will do a a bit better at the least.

Oh and this was about 3 or so days before we both found out about the 450 lph walbros.

 

[hediki12]

http://www.supraforums.com/forum/showthread.php?668127-Walbro-E85-Approved-400LPH-Pump

Here ya go

 

[turboglenn]

Could you post a link of those posts?

I can't seem to find any info on this pump. Are you sure you're not referring to the 400 lph walbro? Eviltsi runs the full blown twin fuel pump hanger and he states it's a pain in the a$$ to work on and doesn't recommend it to anyone..



If the 400s can handle that and aren't even e85 compatible, then I'm sure these new ones will do a a bit better at the least.

Oh and this was about 3 or so days before we both found out about the 450 lph walbros.

i don't know of specific threads, just seen it mentioned on here in drag race and build threads, maybe it was the 400lph now that you say something (i didn't even catch the different number and ASSumed the same pump)


also, i wasn't promoting the ful blown dual hanger as i thjink it's way over-priced for what it is.. I built my own and have seen a few other home build parallel pumpsetups in the tank as well, also you can do 2 in-line with each other and get a little less than parallel but more than one pump

 

[xe0]

i don't know of specific threads, just seen it mentioned on here in drag race and build threads, maybe it was the 400lph now that you say something (i didn't even catch the different number and ASSumed the same pump)


also, i wasn't promoting the ful blown dual hanger as i thjink it's way over-priced for what it is.. I built my own and have seen a few other home build parallel pumpsetups in the tank as well, also you can do 2 in-line with each other and get a little less than parallel but more than one pump

Not many people are running this pump yet since its so new but buschur on Evo m flow tested the walbro 400 and it made 900 on pump.

Stm also has a 2g running the 400 made 580whp on e85 through a mustang dyno.

The 450lph is supposed to flow even more.