Fuel Line replacement DIY
#16
Three Wheelin'
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Does anyone have a photo of what the connectors look like once the original hose and its crimp collar have been removed? I realize there is more than one type of connector, but if anyone has a photo or two it would be educational. Are they straight, flared, barbed?
Thanks
Thanks
#18
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Has anyone used this kit from mason engineering? I cant find a single review on it..
https://www.pelicanparts.com/catalog..._pg1.htm#item2
https://www.pelicanparts.com/catalog..._pg1.htm#item2
#19
Three Wheelin'
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Super basic question for those that have done this. When you use AN6 fittings, these can be assembled with AN6 fuel hose yourself as it looks like they screw-clamp the hose? i.e. no need to go to a hydraulic line shop to have the ends fitted?
#20
Burning Brakes
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yep. no need for professional help. You have to tighten the AN6 fittings quite well, but i had no problem so far replacing the fuel lines from the tank up to the injectors with an AN6 dash setup...
#21
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Yes, you can make your own fuel line using Aeroquip (or a similar brand) fittings and stainless braided hose. The fittings are easy to assemble if you have a vice to hold the fittings. If you need specific instructions let me know. I am sure U-Tube has instructions.
The biggest issue you will have is figuring out what fittings you need and what conversion fittings you need. If you go as far as replacing the fuel lines going to the fuel rails you will need to obtain special metric fittings to mate to the fuel rails but can also be used with the braided fuel line. You can assemble these as well. A few metric to AN adapters at the fuel filter also.
All in all, it is an easy task, just take your time and make good measurements and clean cuts. Make sure you flush line / clean before putting on car.
The biggest issue you will have is figuring out what fittings you need and what conversion fittings you need. If you go as far as replacing the fuel lines going to the fuel rails you will need to obtain special metric fittings to mate to the fuel rails but can also be used with the braided fuel line. You can assemble these as well. A few metric to AN adapters at the fuel filter also.
All in all, it is an easy task, just take your time and make good measurements and clean cuts. Make sure you flush line / clean before putting on car.
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kos11-12 (08-18-2021)
#22
Three Wheelin'
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Thanks Gus, very much appreciated. Made it easy on myself and got the Paul Mason engine bay fuel lines that are incoming for the engine bay lines so that should be straightforward. Paired that with a 928 Motorsports adjustable billet FPR because of the NLA status of the OEM FPR. Decided to go ahead and jump down the rabbit hole while I'm at it and inspect / replace the long fuel lines, likely all of them but most importantly the high pressure supply line. Here's what I am planning so far, any feedback appreciated.
1) Aeroquip AN6 racing hose (stainless), 20 ft to be safe for each run x 3. Read it's only about 14 ft but I like buffer
2) Earl AN6 to metric fittings (working out exactly what I need but post #2 above is a great start and deciding between the 90 deg vs. the 180 deg at the pump end. Will update this post with final parts so others can hopefully have an easier time in the future)
3) Hose cutter (for a clean sharp end)
4) Vise with insert to hold AN fittings for easy assembly
5) AN6 wrench
6) Lube or oil if necessary for the assembly
7) Pipe cutter to cut out the old hard fuel line (since I don't have a lift, and I'm not saving this fuel line, I thought I'd just make life easy on myself by not struggling with the removal. Hopefully this means I can keep the lower strut bolt attached for removal and insertion of the new line.
8) New fuel pump because why not, I'm already there. Will plan to reverse it like in the 993 and get the corresponding line from the tank to the pump.
This will be done while the car is on a quickjack and as part of a larger "intake madness / top of engine cleanup and refurbishment"
My questions are:
1) Will the stainless AN6 hose I'm looking at fit in the center tunnel of our cars? I chose stainless for the superior rubbing / abrasion properties given the length and location of the lines. I was planning to run 3 of them to replace the 3 lines on our cars according to PET. Each has OD of 0.55 in and a 2.5 in min bend radius. If there is a better solution or if I should go smaller for the return line, please chime in
2) Before installing the lines Gus recommends flushing / cleaning the inside of the hose. Would this be with fuel or something else? Trying to minimize how much open fuel I have at any given time.
3) Anything else I should be thinking about or know before I tackle this?
1) Aeroquip AN6 racing hose (stainless), 20 ft to be safe for each run x 3. Read it's only about 14 ft but I like buffer
2) Earl AN6 to metric fittings (working out exactly what I need but post #2 above is a great start and deciding between the 90 deg vs. the 180 deg at the pump end. Will update this post with final parts so others can hopefully have an easier time in the future)
3) Hose cutter (for a clean sharp end)
4) Vise with insert to hold AN fittings for easy assembly
5) AN6 wrench
6) Lube or oil if necessary for the assembly
7) Pipe cutter to cut out the old hard fuel line (since I don't have a lift, and I'm not saving this fuel line, I thought I'd just make life easy on myself by not struggling with the removal. Hopefully this means I can keep the lower strut bolt attached for removal and insertion of the new line.
8) New fuel pump because why not, I'm already there. Will plan to reverse it like in the 993 and get the corresponding line from the tank to the pump.
This will be done while the car is on a quickjack and as part of a larger "intake madness / top of engine cleanup and refurbishment"
My questions are:
1) Will the stainless AN6 hose I'm looking at fit in the center tunnel of our cars? I chose stainless for the superior rubbing / abrasion properties given the length and location of the lines. I was planning to run 3 of them to replace the 3 lines on our cars according to PET. Each has OD of 0.55 in and a 2.5 in min bend radius. If there is a better solution or if I should go smaller for the return line, please chime in
2) Before installing the lines Gus recommends flushing / cleaning the inside of the hose. Would this be with fuel or something else? Trying to minimize how much open fuel I have at any given time.
3) Anything else I should be thinking about or know before I tackle this?
#23
Burning Brakes
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Has anyone used this kit from mason engineering? I cant find a single review on it..
https://www.pelicanparts.com/catalog..._pg1.htm#item2
https://www.pelicanparts.com/catalog..._pg1.htm#item2
![](https://cimg9.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/20200425_152436_resized_1_f23fe6a9da3e92f17cc18cb64b028dd4c3a4a4db.jpg)
here is the original cluster of fuel hoses connected in case this helps with your question.
![](https://cimg3.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/20200604_145639_hdr_resized_ad0662cdb9acf810faf2f143888c3c84bd15bd56.jpg)
Here is the set of fuel lines before installation.
The following 2 users liked this post by jpoint:
kos11-12 (05-11-2021),
Patrik Rens (10-10-2020)
#24
Rennlist Member
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Continuing this great thread with a follow up question: Any complaints on the Paul Mason kit after install? Did anyone do the math and see how much savings is on the table to build the engine bay lines yourself using AN/AQ?
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kos11-12 (08-21-2021)
#26
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I’m going through my fuel system this year and planning on adapting the existing hardline to AN-6. Bought the adapters for the 10mm high pressure line at Lindsey Racing.
Pete
#27
#28
Rennlist Member
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I see the banjo adapter for the fuel pump shown above is linked to an ebay listing that states 12.5mm eye. Is this option on Amazon going to be sufficient?
Vibrant Performance 11523-6An Male Banjo Fitting 12mm x 1.5 Metric; Aluminum + 2 Washers, 1 Pack (amazon.com)
Also found this - which seems more appropriate
![Vibrant Performance 11523-6An Male Banjo Fitting 12mm x 1.5 Metric; Aluminum + 2 Washers, 1 Pack (amazon.com)](https://rennlist.com/forums/images/misc/amazon_icon.gif)
Also found this - which seems more appropriate
#30
Three Wheelin'