Jump to content
SAU Community

Recommended Posts

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

Link to comment
https://www.sau.com.au/forums/topic/361159-e85-do-i-have-enough-fuel/
Share on other sites

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

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.

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).

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.

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

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...

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

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

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...