this is how i did it
 

make a 3/8 copper coil about 6 inches long and coil it around your radiator return line insulate it i used a beer coozie and metal tape and connect it to you gas line going to the injectors ..works best with fuel injection i got 62mpg in a 92 stealth r/t now everyone go save some gas if you get a huge increase like me you toss a dollar my way :D

https://www.fueleconomy.gov/feg/compx...992&make=Dodge
EPA says 22mpg highway, 18 combined. You tripled the EPA's estimate simply by heating your fuel? I'm a bit skeptical...

thats good i was too when i met the dude who showed me how to do it but it only takes a tiny bit of copper some compression fittings and one hour of your time..ive done many times im geting readu to put them on my 91 jeep cherokee and my 99 kia sportage..i dont have anything to gain by making a story up and havent really ever posted a message on a board about anything...but gas prices are killing everyone and i feel like it would be good to share this info with people.

ive done what i feel is my part now you guys an do what you want with it

You're awfully nice.

And did you notice he posted the same message in 2 forums? Can you say SPAM?

I try not to do any witch-hunting. Instead, if I have any suspicions, I only point out facts and offer any neutral opinions I might have.

In his case, I can't see that he has anything to gain; he has no links in his messages and hasn't promoted any product. Either he really believes it (possibly because it's true, or possibly for any of a million other reasons) or he's trolling for suckers to laugh at.

xited about finally telling people about something i learned at eighteen and have kept it to myself for 6 years now.you guys dont think i was like "no way"
when a not so bright good ole boy i was shooting pool with told me his dad built a device that made his piece of **** nissan sentra get over 50mpg well he showed me the crude setup i laughed at it..but we kept in touch a week later he and his dad showed up with one ready to be put on my stealth for free because they were interested in what it would do on my car and boy were we shocked.but like i said in the other forum i dont like the know it all you dont know anything attitude so im just gonna go out the same way i came.
good luck to you all
Christopher wayne hope
ps sorry bout the double post keyboard is messed up

well there wasnt a double post..lol the first part was i was excited about telling people thats why i posted on two forums introduce yourself stuck out then i saw more people in the other forum

Fuel heat has been known to give up to around 25% gains in the past. It can however mess with those "20 miles out and back" highway tests though when it's a return to tank system because gasoline expands approx 1% per degree C, so if you run it just long enough to warm a full tank of gas up by 10 degrees C, you can use a gallon and not get more than a cupful back in it at the pump.

However, when you specifically use copper tubing, and E10 fuel, a new effect may come into play, copper acts as a catalyst in the breakdown of ethanol, converting it to ketones, H2 and other stuff... this starts happening at approx 70C, so get good coolant/fuel transfer in a copper pipe and you might be cracking the ethanol into handy dandy combustion promoters.

i never thought of that dont have the knowledge to think that idea up..lol
we always figured that it either vaporized or expanded it and burned all of the fuel which is why we got better emissions and less sludge and carbon build up..
but hey i dont really know how it works if thats a possibility im glad to hear it

Dehydrogenation of ethanol via copper catalyst
 

I did a search due to your post and found that copper acts as a catalyst in the dehydrogenation of ethanol which produces (as you posted) ketones and H2. that is absoultely awesome!

heating the E10 through a copper tubing speeds up the process and the resulting byproducts is a much more potent fuel infused with H2 molecules which would burn at a higher efficiency!

I was just using a fuel heater made with brass fittings (brass does have copper but it is alloyed) and have been getting good FE from it. I will redo it as chope suggested on this thread with copper tubing!

thanks!

referene: https://en.wikipedia.org/wiki/Dehydrogenation
https://www.ucc.ie/academic/chem/dolc...p/ethanol.html
https://www.springerlink.com/content/xcxy403rn59jpd5f/
https://uwspace.uwaterloo.ca/handle/10012/3271

Yup, I'm gonna try and get the intake ports of my Escort's head copper plated before I put it back on.

Edit: yes brass might not be such a good thing in the fuel system, because the zinc in it in combination with copper promotes a different catalysation reaction promoting acetic acid and formaldehyde production rather than ketones and H2. So stick to copper parts as much as you can.

By the way, copper is meant to be a "bad thing" in fuel systems according to some experts. As far as I can nail this down, it's due to the tendency of copper to work harden and fracture... therefore use of copper line instead of steel and/or flexible lines is not good, because vibration will weaken it. So best practice would be to make sure your copper fuel heating coils cannot come under any mechanical stress, by isolating them from vibration as much as possible. So support the heat exchanger well and allow plenty of free play in connections to it. Make the in and out pipes short, connect with flexible fuel injection hose.

Hmm...maybe a couple inches of rubber hose on each end of the copper would help isolate it.

you know what would be great? a canister (maybe 2" in diameter and 2 to 4 inches long) filled with copper beads or coper shavings where the fuel would pass through. this could effectively "treat" E10 passing through it before it reaches the fuel rail. the canister can be bolted to eliminate any mechanical play, secure it with rubber coated clamps to dampen any vibrations and voila - an E10 catalyst!

a fuel filter with copper lining or filter mesh could do the trick! LOL!

a thicker copper tube with threaded ends, with the caps that have 3/8" fittings. hmmmmm.....sounds like a good project!

pics please! so the copper line is just hollow and empty? are you moving any fluid through it? or are you saying route your fuel through this? is this safe? fire hazard?

did you also increase your tire pressure and are you using a scangauge?