STM sells a line/kit for the under hood feed line.
https://stmtuned.com/collections/mit...o-rail-evo-8-9


For the return line you can just get appropriate sized E85 rates hose from Oriellys. There's the section under the hood and the section at the rear of the car.

The in tank pieces you can ask for a short section of new stuff from STM.

All of this being completely unnecessary of course.

 

Hey @Fox_IX , I do not no how to word this any other way than this, I do not mean for this to come off rude or offensive. If every Evo running ethanol you have worked has returned to you with leaking fuel lines, then you are damaging the fuel lines during R&R.

I cant begin to imagine the number of e85 Evos that have left our shop. None of them have returned for leaking fuel lines from deteriorating because of ethanol uses.

@Womb Raider what your doing is unnecessary. Put your money elsewhere.

@letsgetthisdone One day someone will appreciate the guys who have been around forever. Until then, at least we can be here for each other lol.

 

@GSX_TO_EVO okay man, thanks for your input.

Anyone else think this is a waste of time and money?

 

Not just Evos, I've done lots of conversions on older vehicles. E85 conversion on classic vehicles was my specialty. Most of the time the issue would not be immediately apparent, but it would show up after time. The most catastrophic failures have been with natural rubber in older cars. The Evo doesn't use those types of lines, but I still have issues on high-mileage builds.

I respect that you guys have had a different experience, I'm just sharing mine and why I replace them.

There's no reason to be running a flammable liquid through almost 20 year old lines. Especially one that is such a pain in the *** to firefight. Replacing the soft lines takes about $20-30 inhose if you're not doing fittings, and only takes about 30-45 minutes. Sure you could put money else where but I don't think this is a bad place to spend a couple bucks.

BTW, thanks for being respectful, I respect your opinion. Unfortunately, some people here never figured out how to communicate to other people, but it's much better to actually talk about these things rather than argue like a child...

 

Well said!

Dale Carnegie Finishing School

 

I'd also like to add that this issue seems to only happen when the car sits for an extended period of time after running nothing but E85. The issue is always on the return line or the soft lines at the tank. I have never had an issue with the crimped factory line so I usually leave it.

I'm sure there's lots of people that run e85 on factory lines without issues in the Evo. I was not one of those people, and there are plenty of others with the same issues all over the DSM/Evo forums. Maybe it is overkill to some, but as I've said a dozen times, it's very very cheap insurance. Why not just replace them?

 

What's the point of a forum when an opposing viewpoint is met with insults and negativity. Isn't the whole purpose for open discussion so we can share our experiences? I'm happy to be wrong and learn something new, or change my ways, but that's not gonna happen when the opposing viewpoint is simply "you're wrong" with absolutely zero explanation of the opposing argument.

 

Youre right. Arguing a point, whether in person or in writing is an art. Not all get it & its not easy


"Lifes a lesson, you'll learn it when youre through"

 

Little late to the party but all fuel systems have been ethanol compliant since the very early 2000's because of MTBE being phased out for ethanol. I have literally run nothing but E85 going on 10 years and 90k miles and my stock fuel lines are fine.

https://en.m.wikipedia.org/wiki/Methyl_tert-butyl_ether

 

If it is your money then that is for you to decide. I believe MRFRED posted data logged pressure losses using the stock supply lines and I believe as a result he upgraded so there is something to be gained from pump efficiencies and flow potential by upgrading the line. However, if the restrictions of using the stock lines don't impede performance then it is likely just for piece of mind. I did a custom 1/2" stainless steel hard supply line on my setup just because, but I don't regret it. There are some pics in the folders below if you want to take a look, but can't remember where I put the other pics.

http://www.eng.fsu.edu/~jthagard/EVO/FuelLine/

 

That came out nice bro! Thanks for sharing the pics.

I think i’ll upgrade my lines although it might not gain me much power if any at all.
I think it’d be good preventative mod, as well as give me a peace of mind.
Thank you guys for all your help.

If youre still hovering around and have info and links on parts feel free to drop below.

Thanks again.

 

I've read the same. Newer cars don't suffer the same consequence as older. If someone's fuel line disintegrated, I'd look more into it. Possibly not the original lines? I've seen people toss on whatever line they can find.