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E85 Do I Have Enough Fuel?

krzysiu

By krzysiu,
in Engines & Forced Induction

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krzysiu Grand Master

krzysiu

Posted
Posted

My car is currently running 280rwkw on 98 and was just wanting opinions whether or not my fuel setup is good enough. I've got a Bosch 040 pump and nismo 740cc injectors. Injectors are hitting 62-64% currently when giving it the pedal but am more concerned about the fuel pump. Will I need something like an 044 or will the 040 be enough for what I need. Chasing around 320-330kw

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https://www.sau.com.au/forums/topic/361159-e85-do-i-have-enough-fuel/
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GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

The common belief is that you will use 30% more fuel on E85 though some people i have talked to would say its more closer to 40%

Id say u might need bigger injectors as u dont want to run your injectors past 85% duty cycle

not sure about the feul pump though id say ud probs have to upgrade to 044 just for safety

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

injectors are definately fine, seeing as I make that power with nismo 555's on e85

as for the pump an 044 is definatley enough, however i'm not 100% on the 040.

if you want to buy a new one i'd look at the nismo intank pump.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

Ive been running a 33gtr Tomei on e85 for over a year now with no issues. The lowly Walbro has been heavily tested with it, no problems reported and there are plenty of people on ethanol with 044's aren't there?

I agree, the bearings may fail after a few years in any pump as there is virtually no lubrication with ethanol. The higher petrol percentages like Caltex Eflex (E70) may be better but essentially when the pump starts squealing you will need to replace it, which is part of the reason I like the twin Walbro HP setups (low cost).

boostn0199 Grand Master

boostn0199

Posted
Posted

You might aswell go a surge tank setup with a 044 itll cost you pretty much the same price as just buying the nismo on its own and atleast now youll know you wont have fuel problems if you track the car.

krzysiu Grand Master

krzysiu

Posted
  • Author
Posted

I'm trying to keep things in tank swell as I have had cops looking behind my boot carpet for a fuel setup.

Should have made it clear that I will be running the Caltex eflex so hopefully the pump will survive a title while.

Cheers for you input guys

SS8_Gohan Grand Master

SS8_Gohan

Posted
Posted

yep my walbro coped fine with the E85 for about 18months i had it on the GTT and the new owner is running E85 as well, so we're well over 2 years now with E85 and walbro - just made 110% sure i got a genuine one initially

  • 10 months later...
brentos Community Regular

brentos

Posted
Posted

Sorry to dig up an old thread.

I have a very simular setup to Kris, only real difference being cams. Anyhow I very recently got my car tuned for 349rwkw on E85 with a 3076 @ 20psi

I have 740 nismo injectors and a single intank bosch 040 (which had the restrictor in the banjo bolt drilled out and 1-way valve removed to get more fuel delivery). Pump is probably only 2 months old if that (changed pumps as previous 040 was 3 years old and completely gone). About 3 days ago I started missing bad up top and getting high knock readings where engine was leaning out (timings fine, sparks fine), the problem got progressively worse also the pump has become VERY loud as soon as the problem started (groaning and humming).

Tonight I took it for a drive and pump sounds completely stuffed and I cant take it over 3k without it spluttering its head off - same issue when last pump died..

One thing to note is the car was fine when I was using Caltex E-flex, I believe the problem started shortly after using a few tanks of United which has a higher E%

So my question is what is the best solution for my setup and power level. I would rather keep my fuel system intank if possible but if I have to run external pumps I will.

I was thinking about replacing the 040 but this time leaving the banjo bolt as is and also running an inline 044.. Or would a single intank Nismo pump flow enough for my power level?

Cheers

T.D Experienced

T.D

Posted
Posted (edited)
I have 740 nismo injectors and a single intank bosch 040 (which had the restrictor in the banjo bolt drilled out and 1-way valve removed to get more fuel delivery). Pump is probably only 2 months old if that (changed pumps as previous 040 was 3 years old and completely gone). About 3 days ago I started missing bad up top and getting high knock readings where engine was leaning out (timings fine, sparks fine), the problem got progressively worse also the pump has become VERY loud as soon as the problem started (groaning and humming).

Tonight I took it for a drive and pump sounds completely stuffed and I cant take it over 3k without it spluttering its head off - same issue when last pump died..

Even though you were using a 040, but is the consesus still that a Bosch 044 mounted intank will die a premature death if using E85?

Very curious as I'm running a 044 intank and I want to switch to E85 but just wondering if anyone has ran E85 since the last post and had good results :thumbsup:

Edited by turbodragon

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