E85 Quick Fuel test tube - RX7Club.com - Mazda RX7 Forum

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E85 Quick Fuel test tube

Old 03-05-11, 07:12 PM
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E85 Quick Fuel test tube

Has anyone tried that e85 test tube that tells alcohol content?
It's made by Quickfuel Technology.
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Old 03-06-11, 08:31 PM
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E85 is 85% ethanol
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Old 03-07-11, 01:18 PM
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Yes I have...Works great!
E85 is very rarely 85% ethanol.
In the Summer, it is higher in ethanol content. Around here it's 90% in the Summer.
They add more petrol to the mix in the Winter months so you can start easier.
If you are racing and running high boost, it's good to know how much "corn" you are throwing in the system.
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Old 03-08-11, 08:00 AM
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I did not know they floated those levels. I guess that would be why the octane levels are between 94 and 96.
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Old 03-08-11, 09:38 AM
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[QUOTE=RXTASY57;10504838]Yes I have...Works great!

Cool I ordered one last week.

Last edited by rex3; 03-08-11 at 09:41 AM. Reason: add to post
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Old 03-12-11, 03:15 PM
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you can very easily do it yourself. Mix 50cc of water with 50cc of E85 and you'll see the gas and water/ethanol mix seperate from each other and then you can figure out the percentage of each..
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Old 03-12-11, 06:44 PM
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Originally Posted by enzo250 View Post
you can very easily do it yourself. Mix 50cc of water with 50cc of E85 and you'll see the gas and water/ethanol mix seperate from each other and then you can figure out the percentage of each..
I just got the test tube and your correct I could have done this your way (did not know it was that easy). Btw went and tested some e85 from Rockville Centre Getty and it shows 69% ethanol. I'm not using that station.

Last edited by rex3; 03-12-11 at 06:48 PM. Reason: Add
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Old 03-12-11, 08:14 PM
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would i need to do any rejetting to the carb to start running e85? the holley runs rich enough as it is.
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Old 03-12-11, 10:45 PM
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Originally Posted by rex3 View Post
I just got the test tube and your correct I could have done this your way (did not know it was that easy). Btw went and tested some e85 from Rockville Centre Getty and it shows 69% ethanol. I'm not using that station.
Your results are probably not station specific. As RXTASY57 mentioned above, the percentage of ethanol in "E85" is seasonally adjusted by Volitility Class to facilitate cold starts:

Volatility class 1 --- minimum ethanol 79%
Volatility class 2 --- minimum ethanol 74%
Volatility class 3 --- minimum ethanol 70%

See below for geographic/seasonal mapping...
Attached Thumbnails E85 Quick Fuel test tube-seaonally-adjusted-blends-e85-m-.png   E85 Quick Fuel test tube-seaonally-adjusted-blends-e85-m-z-.png  
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Old 03-23-11, 10:52 AM
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has anyone ever tried using e85 with an fd? I assume it has to go along with major changes in the fuelsystem (hoses, tank, injectors etc.) to avoid failure of all sorts of rubber tubes, hoses caused the agressive ethanol.
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Old 03-23-11, 11:53 AM
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^^Yeah, I'm sure there are a few.
BTW.....car manufacturers haven't used real rubber in cars for decades.
The plastics they use these days hold up to E85.
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Old 03-23-11, 01:45 PM
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your tank,pumps,lines will work you just have to get more fuel into the motor. 1000cc will be good for about 700 to 750 and maybe 800 depending on base fuel pressure. but this is for a 2jzgte car this is what it can do about. i run e85 and its great the rotary motor would love it and maybe save a few motors to. with it high octane and cooling affect.
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Old 03-24-11, 11:24 AM
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I have a friend running e85 on his evo and he told me he had to change all fuel lines, the tank, injectors fuel filter and of course the standard ecu. I know they don't use real rubber (just don't know the official name of that material) but I have been told that they will corrode when get in contact with e85. Maybe it will do for a certain time but in the long term it can be dangerous (fire in the engine room).
Unfortunatel there is no useful thread in this forum dealing with the minor changes of an rotary engine/car running e85. There some folks who tried it with the standard setup using a pfc to increase the amount of fuel. But no experience reports have been published as far as I know.
This is propably because e85 is not really an alternative in the us. Where I live e85 is alsmost half the price than 102 octane gasoline so even with a lower gas milage ratio it would still be worth it to change to e85. Not to mentioned that the advantages of cooler combustion temperature along with higher boost capability and fewer carbon should be a good reason to take its use into concideration.
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Old 03-24-11, 01:54 PM
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anyone know if e85 mixes with premix differently? Im planning on running e85 but was looking for feedback if I need to mix my gas differently or not
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Old 03-24-11, 02:18 PM
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Plenty of people have been using it in the US on their vehicles. I ran it for a year and will be going back to E85 this year. I have noticed no corrosion problems in my fuel rails or degredation of components (rubber return hoses).

Really isn't much to change other than making sure your fuel pump and fuel injectors are sized appropriately. Maybe using an E85 rubber hoses.

Tuning I find simpler with E85 simpler than Gas. Seems to accept a larger variance in AFR's for part throttle and cruise.

Pre-Mix needs to be alcohol compatible or else it could come out of suspension. I have used Klotz Benol and Klotz Super Techniplate.
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Old 03-24-11, 02:45 PM
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Lot of myths floating around out there about E85.
Most of them are pure hog-wash.
It WILL NOT eat fuel lines, or metal.
Every rotary should run it if at all possible. It is a perfect fuel for our cars.
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Old 03-24-11, 03:12 PM
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Ive heard a lot of the high boost guys running amsoil for premix... but no feedback with e85...havent found much info about it..ideas?
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Old 03-24-11, 06:21 PM
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@fritts: would you share some info about your car? what ecu do you use and what size/make of injectors/fuel pump? would be nice to get some info from someone who actually has real experience.
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Old 03-24-11, 06:26 PM
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Running 4x160 lb injectors. Was running a dual walbro setup but now will be running a 1000 hp Fuelab pump. Haltech Sport 1000 for engine management of course. 4 IGN-1A coils. Check out the pics in my gallery for more on Design Engineering Works V-Mount setup with a 6265 turbo.
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Old 03-25-11, 04:35 AM
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Nice website but I can't find any info that you're running e85 with your setup. But thanks for the info on your setup. Using e85 is going to be my next project.
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Old 03-25-11, 11:46 AM
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I actually ran water injection and pump gas last year but will be switch back again this year.
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Old 04-26-11, 03:11 AM
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Originally Posted by rex3 View Post
Has anyone tried that e85 test tube that tells alcohol content?
It's made by Quickfuel Technology.
I've been using it for a few years now and it works well. I have tested most of the gas stations in Long Island but more swapped over to the winter blend. I am starting again, once I test them I'll send you a PM, if you test any please do the same.

See you soon.

Anthony
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Old 05-16-11, 10:24 AM
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Has anyone thought about running one of these?

http://www.zeitronix.com/Products/ECA/ECA.shtml

I will probably add one of these to my setup once I get up and running.
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Old 05-16-11, 03:37 PM
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Originally Posted by the_glass_man View Post
Has anyone thought about running one of these?

http://www.zeitronix.com/Products/ECA/ECA.shtml

I will probably add one of these to my setup once I get up and running.
Running E75 vs E90, really doesn't make a whole lot of difference as far as tuning goes. Not as much as one would think.
E85 is a VERY forgiving fuel.
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Old 05-16-11, 07:00 PM
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Originally Posted by RXTASY57 View Post
Running E75 vs E90, really doesn't make a whole lot of difference as far as tuning goes. Not as much as one would think.
E85 is a VERY forgiving fuel.
I'm interested in something like that as I will be switching between gas and E85 depending on where and when I can access E85.
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