E85Forum.com

E85S13.4 · Joined: 30 Mar 2010 Posts: 10

A freind from work sent me here and i just wanted to say hi i have a s13 240sx with a s14 sr20det. Alot of people dont like imports but when you lay down a 12.96 on 94 octane @ 14psi it deserves respect that being said i am now going e85. With 750cc injectors tuned for 4 bar , 255lpf walbro , aeromotive fpr ,for fuel delivery . Now a couple ?? Some one at supra nationals in texas this year said their e85 was gumming up his fuel system . Is there any problem with this ?i live in Missouri so i dont think it will be a problem . Now 2nd ? What is the negative's of running e85 .

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Project e85 s13.4 is finished4-9-10 AND I LOVE IT . mods 750cc injectors getting tuned for 3 bar fuel pressure
s14 sr20det t3t4 50 trim stage 3 garrett turbo, peak boost manifold ,kaaz 2.0 lsd
aeromotive fpr ,-6an lines, tuned ecu. 1991 240sx

Alcohol · Joined: 17 Apr 2007 Posts: 634 Location: Central Wisconsin

Welcome E85S13.4 !

The gumming problem that was mentioned to you is pretty rare. It is believed that this issue actually comes from the gas (hydrocarbon) used to mix with the ethanol and may well be the fuel additives in the gas portion alone. In other cases it can come from old gasoline deposits on the vehicle tank walls that are dissolved by the ethanol and moved to the fuel filter - and possibly past. In the first case (gasoline additive deposition) it is easy to get rid of it if you have retained fuel maps to limp thru a tank of gas since gasoline dissolves it. I have posts on the subject in the EVO and TurboBuick forums where I have tried to gather data but the issue is apparently so rare that while there have been discussions on it there are typically only one response where I have been able to find out anything of use.

How will you use this car? Street, Strip?

E85S13.4 · Joined: 30 Mar 2010 Posts: 10

I was thinking using seafoam when i put the e85 in , its cleans everything . im using my 240 for street / strip .Daily Driving until winter (looking at buying a beater ) if not it will be driven al year . But strip wise Drifting , 1/4 mile , circuit .
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Project e85 s13.4 is finished4-9-10 AND I LOVE IT . mods 750cc injectors getting tuned for 3 bar fuel pressure
s14 sr20det t3t4 50 trim stage 3 garrett turbo, peak boost manifold ,kaaz 2.0 lsd
aeromotive fpr ,-6an lines, tuned ecu. 1991 240sx

Alcohol · Joined: 17 Apr 2007 Posts: 634 Location: Central Wisconsin

I do not know if Seafoam will be effective in alcohol or not. Wished I knew. There are a few additives which may not be beneficial in ethanol-some could be detrimental. I make sure there is none at all in my base E85 other than the normal corrosion inhibitor.

E85S13.4 · Joined: 30 Mar 2010 Posts: 10

i will contacr seafoam and find out . thanks for the info
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Project e85 s13.4 is finished4-9-10 AND I LOVE IT . mods 750cc injectors getting tuned for 3 bar fuel pressure
s14 sr20det t3t4 50 trim stage 3 garrett turbo, peak boost manifold ,kaaz 2.0 lsd
aeromotive fpr ,-6an lines, tuned ecu. 1991 240sx

Thumpin455 · Joined: 04 Oct 2008 Posts: 227

You will find that E85 cleans everything, including the varnish and gunk in the tank from years of running gasoline. You will also find that you can run more boost and not have a detonation issues unless you are way lean. You will find some power you didnt know you had, and it will run cooler in the summer. You will also find that you can run more timing, and you will be able to set it wherever the engine wants it rather than having to back it down to keep from knocking the rod bearings out or putting holes in pistons.

I would recommend ramping up slowly to E85 to clean all the stuff out a bit slower so you dont end up clogging the fuel filter, pickup, and injectors. Start out with a gallon or two in it, and keep putting more in until you are running around 50% ethanol in it. It should do ok on the tune you have with 50%, it might be a bit lean though, so keep an eye on it.

From what I read about the seafoam, dont bother with it, the ethanol will clean things MUCH better than the seafoam ever would.
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1970 Pontiac GeTOh 455 with a Qjet.
1998 Pontiac Formula LS1 on yeast pee.

murphinator · Joined: 08 Jan 2010 Posts: 93

Thumpin , if you are in a state that has run e10 as pump gas for a year or 2 do you think that amount of ethanol has allready cleaned out any crud in the fuel system ?
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PB's 1/4 mi 12.209, 117.75 trap ,1/8 mi 7.76 ,93.99 trap , 1.949 short time 4.53 0-60

I tune with HP Tuners software

Thumpin455 · Joined: 04 Oct 2008 Posts: 227

Maybe, I have run it in my 1992 F150 before, but it usually got 87. It also had 240k on it before I ran any E85 through it. The fuel filter took a beating with E40 but it seems to run very well on E85, just a bit more cranking time to start it, about another two seconds.

It should be minimal if you have religiously run E10, my dad doesnt put anything else in his Dakota work pickups and he puts 130k on them a year, his fuel systems looked nice when I looked at them, and his engines last quite a while, he has had 4 of them go over 350k so far and the rest of the truck is tired but the engines are still strong. I should really tear one down and take a look. Im trying to get him to switch to E85 since he sells farm equipment, he is not ready yet because of the cold start issues and he just doesnt know enough about it as yet.

I would still ramp it up but you can do it a bit quicker, besides fuel filters are usually cheap and easy to replace, its the sock in the tank and the pickup that might cost you a bit to replace if it gets clogged by the gunk from the gasoline. Funny thing about that, I have a stock tank in my street strip toy and it never had ethanol run through it until recently, it was always race gas since 1994, and after sitting since November with a little ethanol in the tank, the sock in there is plugged, I cant get anything out of it. It needs a fuel cell and a much larger fuel system anyway so it isnt a huge deal, the stock stuff wont support 700hp on ethanol or gas, so it needs an upgrade regardless.
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1970 Pontiac GeTOh 455 with a Qjet.
1998 Pontiac Formula LS1 on yeast pee.