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E85
https://slantsix.org/forum/viewtopic.php?t=57217		 Page 1 of 2
Author:  1974duster kev [ Thu Mar 05, 2015 11:03 am ]
Post subject:  E85
Anyone running it? I have a few questions my buddies with their fuel injected turbo cars run that corn juice all the time and they have been trying to talk me into. Will I be able to run it and just jet the carb up or is it going to eat up all my carb gaskets since ethanol is more corrosive? What afr would I aim for on it and should I leave my timing the same and just crank the boost up :)?

Thanks, Kev
Author:  se7enine [ Thu Mar 05, 2015 12:31 pm ]
Post subject: 
I'm not running it now, but was going to convert my VR4 to E85. As long as your fuel lines are new you shouldn't have a problem. Keep your AFR below 12.5. High flow fuel pump and bigger carb. Be ready to lose over 3 mpg.
Author:  Junior [ Thu Mar 05, 2015 12:32 pm ]
Post subject: 
gonna need to jet the ever loving crap out of it. gonna need to get any rubber out of your fuel system that isnt alcohol approved, it will eat it quickly and leave the pieces in your fuel system. i dont think the carb gaskets will be an issue but i could be wrong. the great thing about the e85 is its resistance to detonation so you can run more boost and timing. you would be in uncharted waters as far a i have seen so take bumping up the timing slowly. might wanna install some kind of knock sensor. also pretty sure you will still be shooting for an 11.5 or a little leaner. again e85 has a crazy resistance to detonation.
Author:  Junior [ Thu Mar 05, 2015 12:34 pm ]
Post subject: 
im not running it. its not readily available in my area yet. the closest station that sells it is 20 miles away. i want to though.
Author:  se7enine [ Thu Mar 05, 2015 12:52 pm ]
Post subject: 
They have E85 conversion kits for carbs at summit. They also have e85 ready carbs. That's what I would get then I would switch back and forth for regular gas on the street and e85 for the track.
Author:  Shaker223 [ Thu Mar 05, 2015 1:01 pm ]
Post subject: 
Been thinking of making the switch myself. I was looking at the blocks as well. $1.79/gal here.
Author:  1974duster kev [ Thu Mar 05, 2015 5:27 pm ]
Post subject: 
It's all over the place for 1.99 a gal around here. Well my whole fuel system is new but I do have a small section of fuel injection hose about a foot long off the tank to my walbro pump. I'm already running 83 mains and like a 105 in the secondaries on premium 19psi lol

Kev
Author:  emsvitil [ Thu Mar 05, 2015 9:36 pm ]
Post subject: 
E85 can be anywhere between E75 and E85 which make it hard to properly jet.
Author:  Charrlie_S [ Fri Mar 06, 2015 4:21 am ]
Post subject: 
Quote:
E85 can be anywhere between E75 and E85 which make it hard to properly jet.
Yeah, I was going to mention that. E-85 is the MAX percentage of ethenol allowed, but it can be much less. The new flexfuel cars have a sensor that tells the computer to adjust for the "real" percentage. Most racers I know, that use E-85, buy it by the drum from a racing fuel supplier to keep it consistant.
Author:  Ssg Pohlman [ Fri Mar 06, 2015 5:35 am ]
Post subject: 
Wasn't boosted then but was running the carter bbd. Drove till the needle almost fell out the door at the gas station, filled up w e85, drove till wideband went screwy (reg gas still in lines) then just hopped out and started tuning the bbd. Done the swap to a holley 350 later and still ran the e85. Not a big deal here even with rubber lines here and there. YMMV.
Author:  Junior [ Fri Mar 06, 2015 7:13 am ]
Post subject: 
i like the two carb idea.
Author:  coconuteater64 [ Thu May 28, 2015 6:01 pm ]
Post subject: 
I ran it in my Ford Ranger and it seemed to run a lot cooler and I could run a lot more advance and static compression, but I replaced the entire fuel system from stem to stern so I couldn't tell you if it would eat rubber parts or not. But it is true that the ethanol level does vary batch to batch, so that's something to consider.
Author:  OleSkoolTony [ Tue Jun 09, 2015 2:27 am ]
Post subject:  excited85
I'm very interested in e85.

I've got a slant I'm getting ready to build.
Id love to have it run off corn liqour.

Anyone running e85 in their carborated daily driver? Or know anyone who is?
Author:  billdedman [ Thu Jun 11, 2015 1:32 am ]
Post subject: 
Quote:
I ran it in my Ford Ranger and it seemed to run a lot cooler and I could run a lot more advance and static compression, but I replaced the entire fuel system from stem to stern so I couldn't tell you if it would eat rubber parts or not. But it is true that the ethanol level does vary bHatch to batch, so that's something to consider.
I am a newbie in this turbo business, and by reading these notes, have learned just enough to get myself into a world of hurt, I think.

My car is a '64 Valiant with a 225 slant six to which, has been mounted a 66mm Turbometics T4? turbo, with a Walbro 60psi fuel pump and an Aeromotive, return-line fuel-prssure regulator, set at 6.5 pounds. It is carbureted with a Holley 4150 double pumper (650 cfm) and has a hand-built 1.625", individual-tube header with a 4-bolt collector and a waste gate, currently set at 10 psi, with plans for more boost shortly. A 904 transmission and an 8.75", 3.55:1 rear end round out the powertrain. It has an MSD 6-AL II module of the type that, though digital, is not used for advance/retard or anything else relating to ignition. It just fires the plugs. That happens through a stock, Mopar electronic ignition distributor. 18 degrees of spark advance, with no curve at all... it's LOCKED at 18 degrees. Compression ratio is a measured 9:1.

Here is my problem:

I use a F.A.S.T (brand) digital A/F meter to check the mixture (it has a probe that screws into a bung installed in the turbo downpipe, just where the burnt mixture exits the turbocharger.) The oxygen sensor for that probe is replaceable at $91.00. Nobody told me, but I learned the hard way that those sensors are quickly poisoned and become ineffective when exposed to exhaust from leaded gas. I ruined two of them before I learned what was causing them to go bad, which they do with no indication that they are ineffective, anymore. That is not the problem. The problem is, this: inconsistent "E85," with regard to trying to determine the A/F ratio when the alcohol content is varying from 70 to 85 percent, a figure that may be critical to its affect on the mixture you are trying to engineer.
If you set your jetting to produce an 11.5:1 A/F ratio (under boost) on straight, lead-free racing gas, so the meter will work, that ratio may change drastically, when you switch to E85, and may change AGAIN when the next batch of E85 used, if it is markedly different from the last batch, as regards the actual alcohol/percentage content. So, do you change jets every time the fuel changes alcohol rattios. or does it not affect he mixture that much???

I guess the answer is, to buy a 55-gallon drum of E85 and test it, but I'm thinking; is this really cheaoer than racing gas?


I don't know how to deal with this. I really WANT to use E85, but the number and level of difficulty of the problems it brings with it, makes me wonder if it will be worth it, given the problems you have to deal with relative to corrosion of components.

I hope someone with more experience can give me some additional insight into this problem; it's an important consideration for those of us who are thinking seriously about trying to reap the benefits of E85's advantages. Thanks for any information!!!

Bill
Author:  1974duster kev [ Thu Jun 11, 2015 7:03 am ]
Post subject: 
I'm at the same pro con moment with e85. I will probably just stay on premium pump and up my meth injection and stay conservative with my timing.

Kev
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