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Need some help with return style e85 fuel system

4.3K views 25 replies 6 participants last post by  99_STROKED_GT  
#1 ·
I have finally saved up enough money to start piecing together my fuel system. The ultimate goal is a street car with 600 or so rwhp. I've been researching for awhile but keep finding a lot of contradicting information. So far I am set on return style and e85. I am wanting to see what fuel setups the guys at this power level are running. The only parts I know I need are 2 fuel pumps with hat, (not sure which hat or pumps yet), 80lb injectors, I'm thinking -8 feed, -6 return, but not sure what all else I need. I have around $1000 to spend and would like to get as much pieced together as possible with that. I will be going with a cobra tank but that is down the road, for now just need input and ideas on what ALL I will need, including fittings and lengths of hose if possible so I can start getting a good list put together and start stock piling parts. Thanks in advance gentlemen, I'm really excited to be moving forward with this build finally!
 
#2 ·
#3 ·
I've been eye balling that kit! I just don't like that it uses the stock feed, I don't think it'll work with e85. It wouldn't cost much to change that over though. And with those pumps, are they plug and play or do they require modifications?
 
#4 ·
Just as a counter argument-
Sump from LMR - $50
Fuelab 41402 1300hp capable pump - $410 (This is probably waaaay overkill, there's smaller, cheaper external pumps out there to suit your needs)
Fuelab FPR - $125
Then get yourself 25ft of -10 and -8 pushlok hose, I'd guess $100 worth of fittings, and run a bulkhead fitting back into the tank.
Wiring is pretty easy, tap the FPDM power wire, wire up a relay to your pump, and the Fuelab have a built in PWM driver.
 
#5 ·
Thanks for the list Wicked, I think I want to try to stay with internal pumps if possible, the roads here are really bad and I don't want to risk accidently smashing anything

---------- Post added at 07:29 PM ---------- Previous post was at 07:01 PM ----------

Random question, can I run 2 pumps in a triple hat? There's a pretty good deal on a fore hat on corral, I asked for the part # to see exactly what it is but I don't think I'll need 3 pumps If I run 400+ lph pumps
 
#6 ·
You can run 2 pumps in a triple hat and at 600RWHP on E-85 that's all youll need as long as they are 340LPH pumps.
 
#8 ·
Thanks for the info Sarge, I figure 2 400+ lph pumps will handle 600. Im sure I'll eventually want more but when I do, I'll hopefully own an 04 Cobra to play with. I'll be happy with 600 out of a 2V.
And I appreciate the link CalBoy, a pumps like that must be what filmman was mentioning. Now, I just need to make sure the Fore hat for sale will work with these or equivalent pumps and hopefully I can start piecing my fuel system over the weekend!
 
#9 ·
Does anyone have any experience with ON3 fuel stuff? Well browsing for some ideas and deals I stumbled across their fuel systems which are considerably less expensive than any others. I'm a firm believer in you get what you pay for but some parts, such as the fuel tank (03-04 cobra style) and bracket for fuel level sending unit are parts I'm considering. I won't be using their pumps but also might consider their fuel hat. I already have rails so I may be able to use on3 for most of my fuel needs then just need to pick 2 good e85 pumps to safely support my goals. I will also be using a different fuel pressure regulator and filters than on3 but what do you guys think of maybe using their fuel cell and fuel hat?
 
#10 ·
No I do not, but im sure it will get the job done just the same. Personally I dont get to hung up on names, and try to experiment with other brands just to be a little different.
 
#11 ·
I was thinking the same thing sarge. I just want to get this ball rolling and now that I'm back in school I have to be a little more smart with my spending and what not so I am searching for deals to get a fuel system built for my goals with around $1000 (minus injectors and fuel cell). But if I can get a "cobra" tank for $240 shipped? Why not try it. And a fuel hat is something I may give a shot too.
 
#12 ·
why not just try a cobra hat for now it will support 600RWHP you can get htem pretty cheap.
 
#13 ·
Some of the aftermarket fuel hats are machined out of 6061 aluminum and then shipped to you without being anodized. This is probably ok on gas cars but E85 and uncoated aluminum aren't a good mix.

Whatever fuel hat you get make sure it has an anodization that will stand up to E85.

Or like SSG says go with a Cobra hat. Most factory parts will handle E85 since they were made to tolerate the alcohol component of today's gasolines.
 
#15 ·
Here's another off-the-wall idea if you're trying to save money.

Grab a tank and lines from a pre 98 Mustang in a junkyard or someone who has some sitting around. Should be able to get them for pretty cheap ($150 give or take should do it). Get whatever set of rails and regulator you want (stock would probably work fine). Lastly, drop in a 465 LPH E-85 rated Walbro ($170) and call it a day.

I can't say with certainty or first hand knowledge that the OEM lines and rails are good for E85, or that the setup will make 600 rwhp. But I know people are making in the low-mid 500 rwhp range with this setup with a 340 LPH pump on pump 93 octane, so it would be close (I've heard the stock hat can actually become a restriction with a 400+ LPH pump, so you may need a different hat). A stock Cobra hat is return-less, so for it to work in a return system, you'd have to add on a nipple/fitting to attach the return line. A competent welder could easily do this (I know several guys in my area).

Also, this setup is very simple and stupid easy to tune.

Out of curiosity, what are you planning to do, or have you done, to make 600 rwhp? I'm a noob here, so forgive me if I'm not in the loop on something. Typically speaking, someone with the money to make 600 rwhp on a 2-valve isn't that concerned about saving a few hundred bucks on a fuel system.

Cheers.
 
#16 ·
Are the pre 98 tanks baffled? If so, that's definitely an option! My goal is a 600 rwhp street car. So far I have a forged motor with stage 3 MMR heads and comp 270s with full bolt ons and will be going with a ProCharger D1. I have the fmic, bov, all piping, 80 lb sd injectors so far. I know what else is needed but I'mnot too familiar with return or e85 so figured iI'd ask around; I've built some good friendships here on MM with a few guys that are already where I want to be with their Stangs and wanted some input from them and others. I know I don't want to sump because roads are horrible here so I want in tank pumps. I'd like to run two 400+lph pumps. I was previously a journeyman iron worker so money was not an issue but last year I returned to college after making some life changes so now I am a lot more cautious of how I spend my money. I could go all out if I wanted to but I'd like to save when and where I can because tuition is no joke and I am paying out of pocket from my savings to finish my degree. I like your ideas Sneaky98, I will look into some of this and see what I can come up with.
 
#17 ·
For 600RWHP are you sure you want o go return? it can be done without a return style system with the new pumps they are producing today and a cobra hat. I am no persuading you either way you just tell me you are set on return and I will tell you how to get there. But if you wan to save some money and get around 600-650 you can do it returnless.
 
#18 ·
To be honest Sarge, I'm really not set on going return, I've just heard its a lot easier to tune up here in CO with return systems. There's a shop in Denver called RWR Motorsports that I'm leaning towards to get the car tuned now and when its supercharged down the road but they have been extremely difficult to get in contact with, I guess the best step would be to see what they prefer before making any final decisions. If they can to a returnless e85 car well, I'm definitely all for it! I know they have a handful of 9 second (@ 8000 ft DA) Stangs which are all on return e85 but most of them are coyotes and gt500s.
 
#19 ·
You could stay returnless with the Walbro pump mentioned above and a BAP and make 600 rwhp. I'm running a single SVT pump with a BAP and I'm at around 425 rwhp but the pump is only at 77% duty cycle and that Walbro pump flows way more than an SVT pump. I'd do the wiring upgrade and PPRV delete on it though, if you search on that there's threads on here on how to do those upgrades pretty cheaply.

This would be a pretty low cost way to go as you can use your current hat and modify the existing basket for the bigger pump.

Most tuners prefer return though as there is less tuning hassle so they will probably push you that way.
 
#20 ·
With a 1000$ budget it will be tight for return system, unless you buy the bulk used i think 1500 is more realistic to do a quality job. remember this is where all the majic happens with E-85 so you want to run a good fuel system when your making big power. Here is what youll need to make it work right.

Regulator
fuel line
Fuel hat
Pumps
fittings
fuel tank or custom baffle
relays and wiring for relays.
ALOT of Patience installing all of this stuff.


If you stay returnless you can keep buy a cobra hat and still need a baffle but you can run 2 340lph pumps on this hat return style.
 
#21 ·
I found you a "FS: kurgan motorsports triple pump hart. Includes -8an feed line to stock fuel rail adaptor. Also includes fuel sending unit and a single 340lph pump. $420 shipped on facebook on classifieds mod motor mustangs" that's a god deal and a good solid foundation.


https://www.facebook.com/groups/1375058249383199/
 
#22 ·
Man, thanks a ton Sarge! I don't have a FB so it won't let me view it but Ill have one of my buddies check it out in the morning. I plan on running two 400+lph pumps but I'd like to get a triple hat for future possibilities so this is what I'm looking for. I could easily sell the pump if need be, I'm about to start a vortech install for a friend and he is running 8#s on 91 octane so that pump would be perfect for him! I'll check it our as soon as possible
 
#23 ·
No problem, I run that same triple hat stacked with 3 340LPH pumps for my setup and man do they put out some fuel.
 
#24 ·
Hey guys, is there a way to know for sure if a hat is treated/coated for e85? I got a PM on corral for a Fore triple hat and the guy ended up getting a compete fuel system and no longer needs the hat, will sell for $200 shipped but it has no part # and he does not know if it is treated for e85. He sent me links for pics but they don't work

---------- Post added at 09:08 AM ---------- Previous post was at 08:51 AM ----------

I was able to get these pics from the original seller
Image

Image
 
#25 ·
99, to my eye that looks like machined aluminum without anodization but it possible its been clear anodized. But what you really want is called hard anodized, this gives the best protection against corrosion and hard anodization usually looks gray or black.

If the hat is a really good deal you could get it hard anodized if you have an anodization shop close to you that does small runs. Often if you aren't in a hurry they will put your small job in with another big job when it comes up and you can get a break on the price that way but check around, some places charge fair prices on small jobs but some places stick it to you.

In the racing world guys go ahead and run untreated aluminum with e85 though, since that hat is probably 6061 aluminum it is a little harder than soft aluminum and doesn't corrode quite as fast. But keep in mind these racing guys keep their fuel really fresh so you would need to do that to keep the water content down and pull the hat out to check it for corrosion every 6 months or so. That would be too much of a pain for me so I'd get it hard anodized.
 
#26 ·
Thanks for the info CalBoy, the hat is a good deal but I don't want to take any chances, I want to buy everything I need once Lol! Ive never worked with e85 or fuel systems in general so I'm pretty stumped as to what all I exactly need but I'm getting a lot of info with this post to help me along the way. I haven't made any purchases just yet. I'd like to find a used fuel hat to save a few bucks then go from there. Id like to keep the fuel system as close to $1000 (minus injectors) as possible so that I can use some money towards other parts of the part pile as well. The search continues for a fuel hat capable of e85...