Fuel Line Recommendations
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Freshman User
Joined: Apr 2004
Posts: 40
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From: Orlando
Fuel Line Recommendations
I'm about to install an aluminum gas tank under the rear frame rails of my 56 f100 (I bought one of those 19 gal. ones from CPP).
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
Last edited by martydread; Oct 30, 2005 at 05:29 PM.
Fleet Mechanic
Joined: Jun 2004
Posts: 1,771
Likes: 39
From: Minnesota
Is that the orignal carburetor? 600cfm is huge for a 292 you only need about 1cfm per cubic inch, 1.5 on a high performance motor.
Originally Posted by martydread
I'm about to install an aluminum gas tank under the rear frame rails of my 56 f100 (I bought one of those 19 gal. ones from CPP).
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
Postmaster
Joined: Jun 2004
Posts: 4,190
Likes: 2
From: Riverside, So Cal
Marty -
At the fuel pressures and flow you need for that engine, any size line will work without a performance penalty. Stainless or steel is your choice depending on how fancy you want it to appear when you are on you back looking at it. A fuel filteris a must.
If you are using a mechanical pump, hard line (largest dia) would be preferred. If using an electric pump, put it in the rear next to the tank so it pushes rather than sucks the fuel up to the motor. In that case, rubber line all the way is fine. Just make sure to use rubber line where the connection might flex due to engine/chassis movement, like between frame and mechanical pump, or between frame and carb.
At the fuel pressures and flow you need for that engine, any size line will work without a performance penalty. Stainless or steel is your choice depending on how fancy you want it to appear when you are on you back looking at it. A fuel filteris a must.
If you are using a mechanical pump, hard line (largest dia) would be preferred. If using an electric pump, put it in the rear next to the tank so it pushes rather than sucks the fuel up to the motor. In that case, rubber line all the way is fine. Just make sure to use rubber line where the connection might flex due to engine/chassis movement, like between frame and mechanical pump, or between frame and carb.
Postmaster
Joined: Apr 2004
Posts: 3,005
Likes: 2
From: Santa Clarita
I rarely agree with Randy (smile) but he's right. I used 5/16" line from my gas tank to the mechanical fuel pump. I spliced a rubber hose at the point of the cab, and then the turn from the frame to the mechanical pump. I stress the importance of a good filter especially with the old gas tanks and the crud in our gas today. I used the Fram Racing Filter and mounted it under the door on the frame using hydraulic fittings. It's the canister type which has a filter inside. They are heavy duty and keep the lines clean. Tip: Make sure you blow out the lines after cutting or flairing to get all the chips out before installing it.
Senior User
Joined: Aug 2000
Posts: 288
Likes: 0
From: Agua Dulce, So. Calif.
Originally Posted by martydread
I'm about to install an aluminum gas tank under the rear frame rails of my 56 f100 (I bought one of those 19 gal. ones from CPP).
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
Looks like there was some 5/16" steel stuff from the original tank behind the seat.
I am looking at some stainless steel 5/16" line. Will that do the trick? I don't want to go the braided/AN fitting route. Should I go to 3/8" or is 5/16" fine? Should I just use aluminum or plain steel instead of stainless? Is the stainless harder to work with? I have to do brake lines too, so I may buy the same material in 3/16".
I have a '57 292 with the mech. fuel pump and it feeds a holley 4160 600cfm carb. Any recommendations would be appreciated.
Thanks,
Martydread
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Posting Guru
Joined: Aug 2003
Posts: 1,243
Likes: 0
From: Michigan
I used 3/8 rubber line from the tank to a filter in the middle of the crossmember in front of the tank, then 3/8 rubber from the filter to the frame rail. I ran 3/8 steel line along the frame till it was directly across from the fuel pump bent it 90 deg then placed a 3/8 rubber hose from the line to the mech. fuel pump. From the fuel pump to the carb I used 3/8 steel except for a small rubber line that contains one more fuel filter.
I also used a piece of 3/8 rubber with a filter (so no junk will go up the line and into the tank (overkill Yes)) for the vent which I ran along the frame then attached it to the middle of the rear crossmember.
I also used a piece of 3/8 rubber with a filter (so no junk will go up the line and into the tank (overkill Yes)) for the vent which I ran along the frame then attached it to the middle of the rear crossmember.
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Thread Starter
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Freshman User
Joined: Apr 2004
Posts: 40
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From: Orlando
Thanks for all of your help—many great suggestions. I already bought a canister-type fuel filter that has a replaceable element and I decided to go with the 3/8 line after all of your advice and also my filter happens to accept 3/8 fittings!
Thanks again!
Thanks again!
Cargo Master
Joined: Jan 2005
Posts: 2,497
Likes: 5
From: Tucson AZ
stainless is always a good choice, mainly due to the anti corrosion factor, although it's a bit harder to work with. Single flares aren't too bad and compatible compression fittings make the job a little easier. It will tend to work harden so it has to be mounted pretty securely. Looks great with a little polishing too, if you happen to have what 'fenders calls a ''sissy frame'' (I do)
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