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E85 Fuel System Setup

sic200

By sic200,
in Engines & Forced Induction

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sic200 Community Regular

sic200

Posted
Posted

hey guys, thought this would be the best forum to ask to get decent answers. am slowly piecing a E85 fuel system together in my 180sx. so far have the following:

2.5L surge tank mounted under car, fed by a walbro 255lph intank fuel pump. have mounted 2 044 fuel pumps underneath the car aswell.

have a twin entry fuel rail with a centre return which feeds a sard type L fuel reg ... i would have gone something better, fuel lab, aeromotive etc but this part was left over from another build.

will have each 044 running a -6 line into either end of the rail and then the central return via a -6 also. injectors are bosch id2000's

questions are regarding fuel filters. which should i use? i've seen the new earls billet ones look quite good and apparently flow quite alot 175gph, which is heaps for a 044. should i run a filter for each pump in

between the surgetank and pump to stop any crap going through the 044's.. and if i run a filter between the surge and the pump, should i run another pair of filters after the 044's, in between the pump and the fuel rail?

i'd prefer just to run the one set of fuel filters, to minimise cost, and to keep as much crap out of the engine bay as possible.

reccomendations please :).. and also if someone can reccomend what sort of relay/fusing/ gauge wiring to use for the pumps :). i read the 044 draws around 15 amps, so should i use a 20amp fuse inline for each of the pumps, along with a 20amp relay?

and have the relay triggered off the factory fuel pump wiring... ecu is a link g4 plug in, so all factory fuel pump wiring etc is still in use.

thanks!

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sic200 Community Regular

sic200

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well at the moment aiming for around 250kw on the stock engine, it makes 220kw on pump now. i've got a built engine for it but not going to put that in untill there is rods hanging out the side of the stock one haha. i only really like to do things once. id1000's and one 044 would probably do it for now, but then i'd have to go and get new injectors, another pump bla bla bla later on. tuner told me that id1000's will be on the limit at around 260ish kw on e85 so hoping that id2000's and 2 044's should see me through to bout 400kw @ wheels?

Edited by sic200
NYTSKY Grand Master

NYTSKY

Posted
Posted

That is basically the same fuel system as mine except I have a Nismo lift pump.

I use one MagnaFuel inline filter between the 044s and my fuel rail.

This system supports 800hp quite easily on E85 ;) so id say its a bit overkill for your power goals.

sic200 Community Regular

sic200

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  • Author
Posted (edited)

ID1000's maxed at 250kw!? How rich is he going to be running it??? ID2000's and 2 044's should do an easy 400rwkw.

from what i understand, for the stock engine. runs f**k all timing to keep it alive, less timing = more heat = more fuel required to keep it cool/same afr's as running normalish timing thus requiring more injector. that's how i understand it anyway.

i'm sure you can all tell me that its the wrong way to do it bla bla etc. but i trust these guys with my tune, and have been using the same 2 guys for years, which both implement the same technique. really just want to know the answer to the fuel filters if anyone has any experience in this

Edited by sic200
sic200 Community Regular

sic200

Posted
  • Author
Posted

That is basically the same fuel system as mine except I have a Nismo lift pump.

I use one MagnaFuel inline filter between the 044s and my fuel rail.

This system supports 800hp quite easily on E85 ;) so id say its a bit overkill for your power goals.

cheers, i'll check out the magnafuel filters now :). i'll never make 800hp haha. but i'm all about overkill, id rather have too much then not enough.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

If it's an EVO - 260awkw is NOT the same as a 260rwkw as EVOs are full time AWD.

1000cc are needed to support 270-300awkw in a EVO. Your tuner is correct, don't listen to the other guys saying otherwise.

Also 400awkw through an EVO will be... Interesting. Are you really going to go that far?

Birds Grand Master

Birds

Posted
Posted

Hardcore overkill lol. My S15 trackie is pushing 285rwkw on 1000cc injectors, E85 fed through a single 044 :/

There's a difference between trusting someone with your car and wasting money.

sic200 Community Regular

sic200

Posted
  • Author
Posted

Hardcore overkill lol. My S15 trackie is pushing 285rwkw on 1000cc injectors, E85 fed through a single 044 :/

There's a difference between trusting someone with your car and wasting money.

mad, what duty cycle are you on at 285 with the 1000's?

dont' really see the point in going the 1000's when they are same price as 2000's. dont care if it uses more fuel or driveability etc isn't as good, its a track only car.

sic200 Community Regular

sic200

Posted
  • Author
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I didn't read the first post at all :D

Just skipped to the power numbers in latter posts haha.

was gonna say. i even said in a post that i understand evo = 4wd and 180sx = 2wd. but didn't see a 100kw in the drivetrain loss between the two? am i serious about 400kw? in which? evo, yes. 180... it'll get there eventually.

Birds Grand Master

Birds

Posted
Posted

If it's an EVO - 260awkw is NOT the same as a 260rwkw as EVOs are full time AWD.

1000cc are needed to support 270-300awkw in a EVO. Your tuner is correct, don't listen to the other guys saying otherwise.

Also 400awkw through an EVO will be... Interesting. Are you really going to go that far?

He's planning a 180sx.

sic200 Community Regular

sic200

Posted
  • Author
Posted

was gonna say. i even said in a post that i understand evo = 4wd and 180sx = 2wd. but didn't see a 100kw in the drivetrain loss between the two? am i serious about 400kw? in which? evo, yes. 180... it'll get there eventually.

+400kw in the evo really isn't that exciting. id prefer the 400kw be in a skyline. evo = boring to drive. 4wd system in the skylines is way more fun, and alot more predictable.

sic200 Community Regular

sic200

Posted
  • Author
Posted (edited)

800cc on e85 with a single walbro was maxed on a customers sr20 at 300kw.

U should go the id 2000cc for later upgrades.

wow, thats really good. guys up here are maxing out 800cc on pump at around 280-290kw on sr's

+ is it really going to be better for the tune using 1000cc now then changing to 2000cc later? i just see it as wasting money. as you'll need to retune the entire map for the 2000cc, and buy new injectors again. unless there is some benefit :S?

Edited by sic200

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