Replace fuel line on Corvair Greenbrier

[Kalve 76]

I have a 1964 Greenbrier van an the fuel line is off of it for the gas tank. Was told it has been off since 2022 when a previous owner got it. Was wanting to know what all I need to replace the fuel line an are there any upgrades I can do to it? Would it be good to upgrade fuel pump from mechanical to electrical fuel pump.

[vairmech]

There is a whole list of things that could be considered upgrades. As far as the fuel line there is the CuNiFe line that bends very easily and I would even think about aluminum line. I buy the aluminum line in 25' coils.

As far as electric fuel pump, I like Craig's pump setup but not so much the inertia switch, I like the electronic control that uses the tach signal.



If you go so far as to pull the tank be sure and change out the rubber hose from the tank. Then also clean out the dimples in the top of the tank and treat them with some kind of rust preventative. You can see that these were filled with dirt and rusty even after I cleaned them out.

[Lane66Monza]

You might want to do what I did.

My friend and I bent a CUNIFER (copper, Nickel, Iron) 5/16"tubing to fit along the tank to get rid of that long rubber hose. It was attached to the sender with Gates 5/16"Barricade hose at each end. I added a GF-99 fuel filter at bottom behind the tank. I then routed new 5/16" steel lines to a square body electric pump on the frame outrigger about 1 foot behind the left seat mount, then to the metal can filter behind the left wheel. We then made a new CUNIFER line to the new 3 port T-fitting to the feed the two CUNIFER 1/4" carb lines routed in front of the fan.

First photo shows original OEM fuel line under the floor (minus about 26"of the tank hose). This is as as removed from the van. Too many rubber hoses and a very old steel fuel line for me to consider this being a reliable fuel system.

20200205_082848_resized(1).jpg (78.65 KiB) Viewed 643 times

This is the current configuration when I sold the van. I didn't get a photo of the filter install at the left rear wheel, but line is routed to OEM position and the filter added in.

20200429_060054.jpg (142.97 KiB) Viewed 643 times

[Lane66Monza]

It is a labor intensive job on a Greenbrier due to all the turns the fuel line takes. It takes experience to know when to bend the tube at the right location. Also, takes knowledge and time time to plan out the system components on where to put the filters and electric fuel pump. This has to be done before you can consider the lines being built. A 5/16" copper-nickel tubing 25ft length is $16 with no fittings (don't need but 1, if planned right) and a 1/4" copper-nickel 25 ft tubing kit with fittings for carb lines is $15.

[Frank DuVal]

In the engine compartment you can just use the same lines from the T to the carburetors (left on right, right on left) and just bend the old or new (looks way better, fewer old unbent bends ) 5/16" line to exit the firewall and connect through an elbow* to the old T, which is now forward of the fan.

Also in case the chatbot AI crap stays, (that's AI, not Al!** hard to tell difference in this type, need New Times Roman, the good typeface, or Slab Serif ) J30R07 is a very old standard, use J30R14 for best results. Gates Barrier Hose is an example I use. Al agrees with J30R14...

*Elbow is 1/8" NPT male pipe to 5/16" inverted flare female. Might not be easy to find locally. Google full of them.

** Or you have to go by Lane from now on...

[RexJohnson]

Another option for coming off of the "T" after it is pointing forward is the outlet fitting coming out of the fuel pump on a turbo engine. It is 1/8" pipe to 5/16" inverted flare but at a 45 degree angle.

[vairmech]

This is on a van but it plays true for a late also.

[Kalve 76]

Yea getting ready to see what steel braided fuel lines I can go with cheapest route an fastest. The fuel lines been missing since at least 2022. Looking to sell this thing ASAP to much trouble trying to get belt on an no room in engine compartment. Going to get fuel line an mirrors an replace windshield an put some paint on it. Have had since February 2025 an want it sold ASAP. I make 6th owner since 2022.

[azdave]

FYI...If you notice a few changes in the last few replies here, I edited several posts in the thread to remove bad info and hot links from a now banned account. It was an AI bot that was posting ad links . Members where quoting the bot's replies including those spam links so I cleaned that up too.

[Frank DuVal]

Yea getting ready to see what steel braided fuel lines I can go with cheapest route an fastest.

Plain old steel lines are cheapest and fastest! Cunifer is next. You can get both at most local auto supply stores and cut/flare/bend to fit. If you are going to play with cars you need a bender and flaring tool. Or stick with Cunifer and usually do not need a bender. Those braided lines are expensive compared. If you want to sell, do not over invest! Just use steel and get it running.