Replacing fuel line S14: My question is what kind of fuel line do I use?

[FaLKoN240]

My question is what kind of fuel line do I use?

Things I know:
Diameter 5/16"

Things I don't know:

Do I need fuel injection line?
Does it matter if it can be submerged in fuel if I only plan on doing the lines to the tank?


Why I am doing this:

My S14 has the dreaded fuel tank crack curse.

I've replaced it and the gas tank I dropped in is cracked as well.

Now I'm getting ready to replace the tank again as well as any fuel lines that look questionable.

What I have on my list of things to purchase so far:

https://www.amazon.com/gp/product/B000EMDS6C/ref=ox_sc_act_title_2?smid=ATVPDKIKX0DER&psc=1

https://www.amazon.com/gp/product/B0040CU0HM/ref=ox_sc_act_title_1?smid=AKUMGGFTUYR30&psc=1

[Kingtal0n]

I used -6an braided w/ hose clamps

Just short runs from the top of the tank to the factory size hardline

supports approx 750hp forced induction application

https://i.postimg.cc/43tJCqgY/7.jpg

Same thing on the other end. I prefer the long-runs of fuel line to be hard steel (safety and reliable) and if possible make the short runs easy to access, leave a little bit extra in case you mess the end up and need to re-cut it again.

-6an is pretty cheap now $2-$3/foot so it was only around $10~

If you are not going to use braided hose, make sure whatever you buy is Ethanol compatible, and will stand up to 100psi~ or so.

[kyral]

5/16 fuel line will work fine. you do not need fuel injection line (its for higher pressure newer fuel systems and is much more expensive) just make sure it is rated for fuel

fuel line can be had by the foot at any parts store. I wouldn't buy it online cause you have to buy a whole roll

[FaLKoN240]

5/16 fuel line will work fine. you do not need fuel injection line (its for higher pressure newer fuel systems and is much more expensive) just make sure it is rated for fuel

fuel line can be had by the foot at any parts store. I wouldn't buy it online cause you have to buy a whole roll

sounds like I have an amazon order to cancel

[dbeiler]

Track tech inspections require SAE J30R9 (or better) fuel line for a reason.


Use J30R7 only if you want your lines to seep and set your car on fire.

[jr_ss]

If you're doing any type of SS fuel line replacement, spend the extra money and get the teflon inner lines. You will not have the fuel smell seep through the lines with this route. -6an will support plenty of power for most, however the fittings are typically where the restrictions are(smaller ID). If you have any plans for E85 and big power, go with -8an.

[Kingtal0n]

What am I missing here. Why would anybody pay more than $3/foot for line that has weaker properties than 1000psi ethanol compatible braided hose.

Better yet, why would anybody use a non fuel injection hose on a fuel injected car. Or or any car for that matter.

I.e. if I have a carb'd fuel system running at 3psi and I know that I can get away with line rated at 3psi, why wouldn't I not use the highest possible quality line anyways since I was changing the line anyways?

The only reason I could see to use the cheaper line is to save $$$
but seriously, saving how much $$ for is worth safety in the fuel system? I am better off with the fuel injection hose even in a 3psi system because it is truly stronger and more reliable. Its the same for any other car part- yeah they sell cheap brakes, cheap plugs, cheap whatevers. But how much $$ is it worth the savings for a part that I only change once every 10-20 years?

[240KA]

What am I missing here. Why would anybody pay more than $3/foot for line that has weaker properties than 1000psi ethanol compatible braided hose.

Better yet, why would anybody use a non fuel injection hose on a fuel injected car. Or or any car for that matter.

I.e. if I have a carb'd fuel system running at 3psi and I know that I can get away with line rated at 3psi, why wouldn't I not use the highest possible quality line anyways since I was changing the line anyways?

The only reason I could see to use the cheaper line is to save $$$
but seriously, saving how much $$ for is worth safety in the fuel system? I am better off with the fuel injection hose even in a 3psi system because it is truly stronger and more reliable. Its the same for any other car part- yeah they sell cheap brakes, cheap plugs, cheap whatevers. But how much $$ is it worth the savings for a part that I only change once every 10-20 years?

what the fuck are you crying about? are you saying those stainless steel lines with hose clamps (what i've always considered to be knock off -6an lines for people who can't afford -6an and want the -6an "look") to be capable of 1000psi and ethanol compatible?

i've never looked into those "knock off -6an", so how bout you post links to actual discussions of this, instead of your blah blah hissy fit.

are you saying those "knock off -6an" lines are better than SAE J30R9 hoses?

[FaLKoN240]

Track tech inspections require SAE J30R9 (or better) fuel line for a reason.


Use J30R7 only if you want your lines to seep and set your car on fire.

Okay the one I posted has that sae rating so imma buy it...

[FRpilot]

I had to replace the fuel tank on my s14 a few months ago too to fix an evap code (discovered a leak/gasoline stain after dropping the fuel tank). I was considering changing the fuel lines too, but was given the advice that factory fuel lines don't usually fail and upon inspection they seem to be in good shape so I just swapped them over.

Anyways, I did find this thread while doing research that may be useful to you too and gives some insight on those SAE 30Rx ratings.

http://zilvia.net/f/showpost.php?p=3489824&postcount=18

[s13silvia123]

awesome i'm in the same boat thinking of what i need right now. great thread

[kyral]

I see a lot of fearmongering, the only thing that concerns me about fuel lines would be, i see someone mentioned track inspections and them requiring a certain rating of hose. (and ofc e85 is a no go with regular fuel lines)
other than that at 40 psi any fuel hose will do, they wont leak they wont seap idk where this is coming from. i run basic fuel line on all my cars and never had a leak
and my s13 stopped smelling of fuel a long time ago

[slider2828]

Why not just do it once and do it right? Teflon lines fuel injection hoses.... Its such a pain to change them out.... just leave nothing to chance.

[1on1]

That's what I've done to my s14. I used teflon FI hoses and got them at oreilly and autozone a few years back (i think the brand was goodyear). Looks like a standard fuel line but it has a inner hose (usually black or blue colored).

[Kingtal0n]

Why not just do it once and do it right? Teflon lines fuel injection hoses.... Its such a pain to change them out.... just leave nothing to chance.

this is what im saying. Instead of trying to meet the current demand (3psi for example) just use the best possible thing so you only have to do it once. that is all I said.

[slider2828]

this is what im saying. Instead of trying to meet the current demand (3psi for example) just use the best possible thing so you only have to do it once. that is all I said.

Totally man.. I was just talking to the other posts.... And if you go to the track, fuel is not something to f around with if you have a big crash or run the rear end into a wall.... Unless you don't mind losing everything

[fitbmx180]

I used vibrant -8 an fuel line and -6an for return. That is more than enough

[NiSilS14]

https://goodyearrubberproducts.com/2012pdfs/Goodyear_Commercial_Truck_Belts_and_Parts/files/assets/downloads/page0032.pdf

For oem applications, I like to use this stuff. The nitrile inner liner makes it safe for e85 also. also for fuel injection clamps use oem clamps, I never have good luck with the aftermarket parts store crap. I also like to use pinch clamps for rubber hose applications as they're more secure, but it does require a tool to clamp down. They're also limited in range.

https://vibrantperformance.com/catalog/index.php?cPath=1073_1075_1335&sort=2a&page=1&osCsid=2002020fafde8bcdd799a911d4f8ce34

[FaLKoN240]

I didn't have to replace any lines this time around had a pinky sized crack in the tank though...

[s13silvia123]

https://goodyearrubberproducts.com/2012pdfs/Goodyear_Commercial_Truck_Belts_and_Parts/files/assets/downloads/page0032.pdf

For oem applications, I like to use this stuff. The nitrile inner liner makes it safe for e85 also. also for fuel injection clamps use oem clamps, I never have good luck with the aftermarket parts store crap. I also like to use pinch clamps for rubber hose applications as they're more secure, but it does require a tool to clamp down. They're also limited in range.

https://vibrantperformance.com/catalog/index.php?cPath=1073_1075_1335&sort=2a&page=1&osCsid=2002020fafde8bcdd799a911d4f8ce34


you can get those crimp clamps from home depot, menards, lowes, etc...in the plumbing section. those are also used for pex. way cheaper than what vibrant sells them for. a pex crimp tool will cut or crimp the clamp.

[jumpman2334]

https://goodyearrubberproducts.com/2012pdfs/Goodyear_Commercial_Truck_Belts_and_Parts/files/assets/downloads/page0032.pdf

For oem applications, I like to use this stuff. The nitrile inner liner makes it safe for e85 also. also for fuel injection clamps use oem clamps, I never have good luck with the aftermarket parts store crap. I also like to use pinch clamps for rubber hose applications as they're more secure, but it does require a tool to clamp down. They're also limited in range.

https://vibrantperformance.com/catalog/index.php?cPath=1073_1075_1335&sort=2a&page=1&osCsid=2002020fafde8bcdd799a911d4f8ce34
we just used that good year hose on my buddies 89 dodge and it came out great. it replaced all of the hardlines that were rotted out. it was very easy to cut and get it all situated in place. I also believe my father uses this hose (or some similar form) on the sprint car he works on. he sells a lot of it at the hot rod store he works at and cant say enough good things about it.

[NiSilS14]

you can get those crimp clamps from home depot, menards, lowes, etc...in the plumbing section. those are also used for pex. way cheaper than what vibrant sells them for. a pex crimp tool will cut or crimp the clamp.

I actually haven't ever used vibrant for the crimp clamps, it was for illustration purposes. Sometimes with home depot, I've noticed the clamps fall in between diameters with certain size fuel hoses since it's marketed toward pex plumbing.