russel pro flex hoses or not
All rubber lines are porous to some extent and fuel is a pretty small vapor so it gets through easily.
Oil will even eventually weep a bit.
The teflon lines acts more like a hardline and seals up the porosity.
Oil will even eventually weep a bit.
The teflon lines acts more like a hardline and seals up the porosity.
I used to work for a major aftermarket company. One time I went back to the engineering department and saw that they had dozens of little glass jars sitting there with small sections of hose inside liquid. I asked what that was all about and was told that they were testing the effects of various fuels on different hose (their own and their competitors). After seeing those jars and what gasoline eventually does to that hose, I will never run it on anything besides maybe a race car that gets regular inspections. The short of it is that in not much time all hose was starting to deteriorate pretty badly. Race gas was actually not as toxic as different street blends, mostly because of the ethanol content. That's why I prefer the teflon hose. The odor is another area where the teflon hose is superior.
Andrew
Andrew
Trending Topics
I guess their hose was crap compaared to the OEM hose that Subaru uses. I ran E85 for 3 years on factory Subaru hose and after tear down it all looked better than new. Valves and pistons looked great too...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
I used to work for a major aftermarket company. One time I went back to the engineering department and saw that they had dozens of little glass jars sitting there with small sections of hose inside liquid. I asked what that was all about and was told that they were testing the effects of various fuels on different hose (their own and their competitors). After seeing those jars and what gasoline eventually does to that hose, I will never run it on anything besides maybe a race car that gets regular inspections. The short of it is that in not much time all hose was starting to deteriorate pretty badly. Race gas was actually not as toxic as different street blends, mostly because of the ethanol content. That's why I prefer the teflon hose. The odor is another area where the teflon hose is superior.
Andrew
Andrew
Again, all boils down to correct and appropriate use of any hoses.
^Stevie hit it right on the head. Many hoses are compatible for contact with fuel and not compatible for submerging the hose for prolonged periods of time in fuel. Teflon is great as are other PTFE blended polymers (Teflon-synthetic blend) but typically much more expensive. For E85, the higher the PTFE blend content, the greater "compatibility" with E85 due to the ethanol content just in case it was a question. Not to say that other synthetic blends which do not note PTFE as a material has not worked for some.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Ive already answered.
Unless the lines go inside the cabin, there is no specific requirement to use PTFE unless the type of fuel you are using demands it.
But in short, use as per manufacturers guidelines.
But as you dont mention overall routing, and dont mention the type of fuel, etc etc etc...I cant give any other answer
Unless the lines go inside the cabin, there is no specific requirement to use PTFE unless the type of fuel you are using demands it.
But in short, use as per manufacturers guidelines.
But as you dont mention overall routing, and dont mention the type of fuel, etc etc etc...I cant give any other answer
Ive already answered.
Unless the lines go inside the cabin, there is no specific requirement to use PTFE unless the type of fuel you are using demands it.
But in short, use as per manufacturers guidelines.
But as you dont mention overall routing, and dont mention the type of fuel, etc etc etc...I cant give any other answer
Unless the lines go inside the cabin, there is no specific requirement to use PTFE unless the type of fuel you are using demands it.
But in short, use as per manufacturers guidelines.
But as you dont mention overall routing, and dont mention the type of fuel, etc etc etc...I cant give any other answer
If you want a trouble free system then PTFE it is for E85. My buddy worked on this research you can find in the link below.
http://iqlearningsystems.com/ethanol...patibility.pdf
If I may also suggest, use a Stainless Steel filter for E85. Most of the guys up in the NE with E85 coming out of a particular shop used 100 micron and a secondary <40 micron filter. E85 is not as strictly regulated regarding contaminants and such so the E85 blends we have seen in NJ, NY, and CT can be filthy at times. Not to say some locals we know havent gotten away with using other types of filters but some have shown deterioration of non-SS filters. The combo has not resulted in any issues to date. Some of the guys have been running E85 for 3-4 years without a hiccup. Again, this is what I have personally seen regarding many imports and E85.
http://iqlearningsystems.com/ethanol...patibility.pdf
If I may also suggest, use a Stainless Steel filter for E85. Most of the guys up in the NE with E85 coming out of a particular shop used 100 micron and a secondary <40 micron filter. E85 is not as strictly regulated regarding contaminants and such so the E85 blends we have seen in NJ, NY, and CT can be filthy at times. Not to say some locals we know havent gotten away with using other types of filters but some have shown deterioration of non-SS filters. The combo has not resulted in any issues to date. Some of the guys have been running E85 for 3-4 years without a hiccup. Again, this is what I have personally seen regarding many imports and E85.