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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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02-22-2011, 04:03 PM | #31 | |
Zilvia FREAK!
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If you leave your wideband calabrated for gas (which allot of people do when running e85 because allot of the gauges have trouble reading out in the 10:1-6:1 range and because lambida your dealing with such small numbers that at a glance are hard to take in) i usually try to target around a 12.5:1 on the gauge although that is not really the afr. Im sure this will cause more confusion with other people but we go through this everytime an e85 thread comes around. Sent from my rooted Incredible using tapatalk |
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02-22-2011, 05:41 PM | #32 |
Zilvia FREAK!
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i understand.but the information thats in this thread is based on a lot of what people "heard" half the people dont know what they are talking about. I wouldn't mind if this thread stayed educational. questions should be posted, of course. They should be answered by either people who have tuned with e85 and or run e85 in their car. Guy above me your spot on. I understand what your are talking about.
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02-22-2011, 09:52 PM | #33 |
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so what would I need for a basic 400whp fuel setup. Also are the top feed injectors recommended over the typical sidefeeds?
walbro, 750's and a power fc plus stainless feed and return lines?
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02-23-2011, 02:28 AM | #34 | |
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Sent from my rooted Incredible using tapatalk |
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02-23-2011, 07:34 AM | #36 | |
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02-23-2011, 10:18 AM | #37 |
Leaky Injector
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I've been running E85 in my RB25 for almost 3 years now. Never had any issues. Made 477 at the wheels with the following setup.
Walbro RC 750cc JGY Top Feed 3076R FReddy Intake Manifold Q45 TB Pump E85 MAP ECU Dropped the boost down and sitting happy now at 410 because I didn't trust the boost levels I was running for 477 on a 17 year old motor.
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02-23-2011, 10:42 AM | #39 |
Zilvia FREAK!
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So here is some things I can think of right now.
I prefer a 4 bar fuel setup with e85. Since your running so much more fuel having higher pressure behind it allows it to atomize better. I feel that it atomizes great regardless on a hot engine but that isnt going to help you when you cant get it started or to stay running on a cold day. Another great thing about a 4 bar setup is it will make your injectors just about the right percentage bigger that e85 requires in fuel demand to stay at the proper ratios vs gas. This means that your gas tune should "run" your engine on e85 although not everything will be perfect and a tune needs to be in order. This also will help you with deciding on what injector size you need. While were on the subject of injectors there are 2 I like. I have been running msd top feeds. 72lb/hr or 756cc ones to be exact. They are fine and I already had them and have not had any issues with them so no complaints here but If I had to purchase some for whatever reason I would go with bosch topfeeds just to to their performance specs and their well known to work great with e85. Now for a 4 bar fuel setup to work you cannot rely on your in tank walbro 255lph pump. I wont get into the details right now but just take my word on it for now. Instead of linking you to another forum I have explained all of this and described my fueling setup I will carry the information over here sometime today or tomorrow. I am running a 255lph in tank and a 255lph hp inline after the fuel filter and this yeilds enough pressure and flow for my setup. I dont know exactly where it would start to not be enough but you could always use a similar setup with a walbro 290lph or a bosch 044. Now I want to stress that a big NO NO is atmospheric pcv. PLEASE re rout your valve cover breather back to your turbo inlet or intake if your n/a. If you really cannot do this for whatever reason see about PROPERLY routing it to your exhaust stream or even routing it out of your cowl or hood or fender vents. The reason behind this is your crank case gasses will be highly flammable when running e85 (ask me how I know). One benefit to routing it back to your intake instead of through the exhaust or whatever is your wasting less fuel because it is being re consumed by your engine and you dont have to tune extra fuel in. The reason the crank case vapor is flammable is due to blow by (which every engine has and why you have pcv). E85 has a very low boiling point so as soon as it leaves your injector and hits your hot intake manifold, head, valve and combustion chamber it is a vapor full of energy (steam). It mixes with the air better than a wet gas vapor. When the piston comes up some of the vapors slip past the rings and enter the crank case. Now gas does this too but gas stays in your oil, e85 stays a vapor and is expelled through your pcv. A suggestion on re routing it back to your intake is I believe it can cause you trouble if your using a blow through maf. You will be re meetering air already meetered air. You will most likely be able to over come this with tuning but it could max out your maf earlier so just keep it in mind. One side note is if your dipstick fits loosely you may want to replace it or replace the oring. |
02-24-2011, 12:23 PM | #40 | |
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Now this is a writeup I did on a dual pump install on a s13. My reason behind it was for my e85 needs but I worded things in a way that it will be familiar for anyone still using gas or a 3 bar setup. Just keep this in mind when reading it.
This is good for anyone running more than 16.5 lbs on a 3 bar fuel setup with a walbro 255lph pump or a 4 bar setup. Quote:
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02-24-2011, 03:04 PM | #43 |
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Not sure if they're modified Bosch injectors but these are supposed to be some awesome injectors. They even have 2000cc ones. These ain't cheap for sure.
The 1000cc (high impedence) as a set are reasonably priced from Amazon. (not trying to promote any supplier..) Amazon.com: Injector Dynamics Plug-n-Play 1000cc Fuel Injector Set 2000-2005 Honda S2000: Automotive "I'm later on going to come up with something better than electric tape to protect the positive terminal from grounding out." Try liquid electrical tape. Amazon.com: Permatex 85120 Liquid Electrical Tape - 4 oz: Automotive |
02-25-2011, 02:16 PM | #44 |
Leaky Injector
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I know its a totally diffrent car but it has alot of e85 information regardless
The E85 Army Thread - NASIOC Ive been running E85 for awhile now. AWESOME cleaning propertys (switch out fuel filter like 4 times if your running it in an older car). Great octane!! I try to always get it from the same stations due the fluctuation of octanes at different stations (not enough to really fuck to much shit up but still a good habit). And the fact that you can push the tune a shit tune harder with E85. Just dont run to rich with it.......get tuned professionally if running E85. Idk bout 240s but in wrx's the only thing that would fail due to e85 is the oem fuel pump seals and the oem injector o-rings. |
03-13-2011, 08:59 AM | #46 |
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wow lots and lots of things getting thrown around without any forst hand knowledge.
E85 is a drug and you will not want to run anything else after crossing over. My EVO8 on 91 pump makes 328whp and on e85 makes 410whp with only a 3 psi bump RC1000 injectors @ 75% duty cycle with a walbro 255 intank my SR isnt done yet but she consist of FIC 1650's DW 301 intank will be a few months till shes done but she will be on E85 100% of the time |
03-13-2011, 08:49 PM | #47 |
Zilvia FREAK!
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Yea, i get so tired when you hear the comments that it takes X% more to produce the same power ect. Sure it takes a little more fuel than gas but not almost 2x as much, not even close. Every pump ive seen it at it is 30% cheaper than low grade gas and sometimes close to 1$/gal cheaper than premium.
I run it for the power as i think its better for me than race fuel and it is far cheaper than race fuel. Sent from my rooted Incredible using tapatalk |
03-15-2011, 06:25 AM | #52 |
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I've been running e85 for two years, I tune it with a standalone system -Autronic Fuel and Autronic 500r Ignition.
I'll definitely say being diligent with your fuel filter changes after you do the switch is very important. I did mine after the first two tanks of fuel and again at 1000 miles and the next oil change. The deposits that develop of the many years of use while using regular pump gas begin to quickly breakdown and travel downstream into your fuel filter when you start using e85. This is why it's so important to keep up with your fuel filter changes at first. The other thing to be very diligent with, that I have seen mentioned, is to keep up with your catch-can. Emptying that will help your oil longevity in a big way while running e85. Your first two oil changes after switching to e85 should be done in half the time you are doing while using Pump gas. This is because once again the deposits and other gunk in your engine that has been collecting will start to break up and go into your oil. Also the conditioning of your seals and other internal delicates will take to the different level of moisture and acidity in your oil better if it is in a lower amount over a longer time. Do not be alarmed by your first oil change after switching to e85, IT WILL SMELL HORRIBLE!!! also the amount of "gunk" in your Catch-can will be alarming if you don't empty your setup often. Also once you have a good sealing PCV system as it was mentioned bring it under vacuum so it can do its job. For fueling I have ran a 255lph HP in-tank pump, with a Paxton FPR, 740cc injectors at 3 bar. I am well into the duty cycle of my injectors under boost, thus i am adding the system i have in the garage- A swirl-pot fed by the 255, that is then drawn on by an Aeromotive Eliminator. I will be running a a pump controller on the Eliminator such that while cruising it will be half voltage, then above 75% throttle it will return to full voltage and full capacity. I will elaborate more if anyone has any questions. I have a service call to go on. Have a great day and goodluck! |
05-28-2011, 06:15 PM | #53 |
Zilvia Junkie
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ready to run my fully built 2.2liter sr20 on E85. have all supporting mods for fuel system, just wondering if the injector latency times differ for e85 as opposed to premium gas. running haltech ps1000. hopefully someone knows the answer to this. thanks
Mike |
05-29-2011, 12:09 AM | #56 |
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Methanol > e85 .... Unless u are one of the lucky few who live by the 3 Socal e85 stations I would go with methanol... Can be found any where! Target - Walmart !
But that's just me...
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05-29-2011, 12:18 AM | #57 | ||
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Quote:
Quote:
List ways its better and show more power being made on the same engine meth vs eth GO |
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05-29-2011, 12:30 AM | #58 |
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The only reason
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