Rkreigh

upgrading my vette to e85

looking to make 1000 rwhp but I need a bit of headroom and safety factor on the fuel system so Im looking for something that will do 1200 rwhp in case I get greedy and the combination holds up

using bosch 127 injectors, and have Alchy Julio system that will be controlled by the Haltech

also like to hear thoughts on Lee's direct port ECS alchy injection

Milan

Gonna be $$$$$. I'm a little over 800 whp on E85 and my 127's are basically maxed out. I can probably get to 900 whp but that is going to be it.

Find Mr. Big on here (in the C6 section), he is over 1000 whp on E85. Also I would **** can the meth personally. Makes things too complicated with E85 (I've tried it) and E85 is better anyway.

What do you mean by safety factor?

inspector12

LOL! Been doing a lot of research on it myself and a single Magna fuel 4303 (external) with a stock pump and a voltage booster will get you there from my discussions with Magna fuel and a few others. Foreinovations triple pumps is another option its all ethanol compatible stuff and nice. But pricey @1025-1500 depending on the options you choose.

Y2KRoadster

How many people or shops are running the stock fuel pump with the magnafuel pump, E85, and 1200whp? Are there guys actually running that or is that just what Magnafuel claims? How big are the lines? Filters? Fuel injectors?

OP, it's going to cost a good bit of money. More people will chime in with E85 on here and, like Milan said, get with Big. You could also give ECS or A&A a call. They might be able to give you some pointers as well. If you find something that works good, post it up!

DRIVER456

I run e-85 & 100% meth with no problems.I have ID2000 inj. 2 in tank I think they are 255 ltr pumps,One runs all the time and the other one comes on under boost.I have -8 fuel lines going up to the fuel rails.I don't run the car @ a 100% throttle only a few times and the fuel system kept up with no problem.I don't make 1200hp but I'm sure its over 800.OP what combo do you have now?

Shoaf85

I have the walbro in tank and magnafuel external (boost activated). No Dyno numbers yet but I don't see it being a problem when people make 800 whp on just two walbros with gas of course. So the huge flow of the magnafuel with a properly setup return system that "should" get you 1000 on e85 no problem!

BLOWNBLUEZ06

The flow of the Magnafuel pumps is quite misleading. When designing your fuel system, you need to determine the flow of the pumps AT THE DESIGN PRESSURE! and leave yourself some headroom. That means if you're boost referenced (and big boosted guys should definitely be), you need to ask for the flow rate of the pump (on the low side) at your base pressure, plus your boost. Scenario: Base pressure = 50psi and you're running 25psi boost on a boost referenced regulator, your pressure is 75PSI up top. That's where you need to be asking what your flow is and making sure your injectors can operate at that pressure.
You also need to find a good base pressure to run. 58 isn't it for me. A balance must be struck. You need pressure but too much pressure and injectors won't open properly or consistently and pumps won't flow. Running 58psi plus 30lbs boost is almost 90psi if the regulator is perfectly linear and that can cause problems. You should also factor in your fuel consumption based on crank horsepower, not only taking into consideration your drivetrain losses but also the extra horsepower it takes to drive the blower itself. A F1R can take over 250HP to drive it alone.

Shoaf85

^^^ Very valid points and I did take all of that in to consideration when planning my setup. Including max pressure for injectors and flow rates for the pumps themselves. I am boost referenced but will only be running around 15 psi so im gonna start with base of 55psi.

jmuck

On my pile I run E85 and my set up consist of a LPE 255 in-tank, -10 ECS sump feeding a Magnafuel 4703 set to come on at 5psi. -10 feed up to the driver fender where it splits to dual -8 lines feeding the back of a set of Edelbrock rails. Injectors are ID2000's. Dual -8 return lines from the front of the rails to a Magnafuel boost ref. regulator and a -10 return dumped back into the top of the driver side tank. I've got an F2 that is at the 28ish psi mark and my injector duty cycles are in the upper 70%. My base fuel psi is 58 and at full tilt I see 82psi.

4DRUSH

If I was building a new fuel system from scratch, it wouldn't be electric.

jmuck

Use a 4703 with a good in-tank and call it good Jeff.

jmuck

This man knows what' up.

4DRUSH

You add bigger vents on your tanks, if not I bet your tank is under vacuum during wot

working your pump(s) extra hard

jmuck

Never heard of anyone doing that, nor having that problem. I have never had a fuel del issue, or problem with the psi spiking.

Would you elaborate for me? Always down to learn something new.

MVP'S ZO6

Seems like there's a lot of different philosophies as it pertains to the ultimate fuel system in here.

Milan

If Muck says it's working for him, I would definitely take a look at what he is using. Most big power people on this forum haven't had their cars with as much uptime as muck AND most have little to no experience with E85.

E85 is the **** once you know how to build your setup around it. Took me awhile to figure out all the quirks but I finally know all the tricks to make my car drive like stock and make good power.

inspector12

Yeah talked to them about that one and really the only good options were belt driven pumps, but not really and option for me because of mounting and space requirements. But was thinking about two 450's with the 4303 for about 13-1400rwhp on E85. But when talking to Magna fuel there pumps fall short on corn lol! The Weldon pump is the only one that has made any serious HP on one pump alone, but its LOUD AS HELL! So that rules it out on my street car lol! I know the gear pump is pumps more, but maynot be enough from talking to them. The 4303 is only good for 900-1100 on E85 that is FW rating but they said putting more volts on it will pump it up 12-1300. Talked to them and said that it would probably hold 1200rwhp with out to much issues with the proper lines and injectors. GL guys I'll let you know what I come up with pretty soon.

narfdanarf

two 450's by themselves are enough to meet your goals....

inspector12

From experience or from numbers? You know some one making 1300-1400RWHP on E85 on just two walbro 450's?

Milan

How did we go from 1000 whp to 1400 whp? 1000 whp with a little bit of head room is going to need a lot less fuel than 1400