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horvath 03-27-2011 12:31 PM

Seeking Advice: Installing Fuel Pump & Fuel Lines
 
I just put a new gas tank in my '54 Chevy pickup truck and now I want to install a new mechanical fuel pump and run a new fuel line from the tank to the pump and carb.

I've never done this before and would appreciate any helpful hints and advice.

I think I've got the procedure for installing the fuel pump clear enough ... but I have questions about running the fuel line.

Do I run as much steel line as possible; minimizing rubber fuel line? Or doesn't it matter much?

Do I go for stainless steel fuel line?

Is it better to run the fuel line inside the frame rail? Or better to run it along the outside of the frame rail? And what's the best way to secure the line to the frame rail?

Much thanks in advance!

Alan

Localboy808 03-27-2011 01:31 PM

This isn't a dig at you Alan so please don't take it that way. But I would say just answer those questions with common sense answers. Steel will last longer. Stainless even longer. Use as much steel as possible and it will last even longer. I've never done what you are doing but that's the way I'd look at it. Also inside the frame would be more protected. Now that said I will tell you my current project (66 Merc Monterey) the fuel line is made out of some kind of plastic! Looks stock so I guess if the factory felt it was ok to use a plastic line my common sense just went out the window! ;)

snkbyt 03-27-2011 01:46 PM

Quote:

Originally Posted by Localboy808
This isn't a dig at you Alan so please don't take it that way. But I would say just answer those questions with common sense answers. Steel will last longer. Stainless even longer. Use as much steel as possible and it will last even longer. I've never done what you are doing but that's the way I'd look at it. Also inside the frame would be more protected. Now that said I will tell you my current project (66 Merc Monterey) the fuel line is made out of some kind of plastic! Looks stock so I guess if the factory felt it was ok to use a plastic line my common sense just went out the window! ;)

They started using the plastic because it never rusts , it saves weight, heat it and bend it. easy Oring seals.
Alan..just as Localboy says. I'd use steel. Stainless costs more, harder to bend and flare. Stainless is for show so it can be polished to a chrome look. You never see stainless on OE cars. Use as little rubber line as possible. It's always under vacuum on the tank side and inner walls have a tendency to collapse on long lengths. I buy Adelle type clamps at a parts house for clamping to the frame...drill a #7 hole,tap it 1/4" and bolt it.

S10 Racer 03-27-2011 07:23 PM

I vote for aluminum line. It is real easy to bend, never rusts and looks good too.

horvath 03-28-2011 12:43 AM

Thanks, everyone. I wondered about plastic ... there are so many innovative products these days. Aluminum sounds best, and Adelle clamps sounds like a winner ... I was just wondering how to clamp the line if it's running inside the frame rail -- I like the idea of it being protected that way, but I also don't want any movement to it.

Alan

techinspector1 03-28-2011 02:24 AM

Unclamped tubing inside a frame rail can chafe and wear a hole in itself from bouncing around. Use steel or aluminum along the frame rail on the outside and clamp it about every 18 inches with an insulated Adel clamp. If you plan to drag race, use an 18 inch length of stainless braided in the vicinity of the flywheel/flexplate or enclose the fuel line in an 18 inch length of protective steel tubing to prevent rupture due to an exploding component. I'm not sure how aluminum will react with the ethanol in fuels today, but I doubt it will be pretty.

Never used plastic, but I would think it would work out great. That's what has been on my old pickup truck for a quarter million miles.

horvath 03-28-2011 05:15 AM

Thanks.

Wearing a hole in the tubing is exactly what I was concerned about with running the fuel line inside the frame rail ... I can't imagine how you could secure it!

My truck is a street rod ... no drag racing intended.

Plastic sounds like the easiest to install ... I'll be making measurements today and buying all the stuff I'm gonna need. Then, I plan on doing the install tomorrow.

I'll let you all know how it goes ... and, thanks again for all your input!

Alan

75gmck25 03-28-2011 05:32 AM

I would also suggest using a large diameter, high flow fuel filter near the tank, mounted so it is easy to change. Then use a smaller filter in the engine compartment near the carburetor. You can get by with only the filter at the carburetor, but the large pre-filter is a good add-on.

Bruce

horvath 03-28-2011 06:41 AM

Thanks, Bruce.

That's a good idea because there's no sock inside my fuel tank on the sending unit and I've been thinking about putting a fuel filter somewhere before the fuel pump.

My truck just came back from new paint and body restoration, too, and I'll be doing something very original with my bed (no kits for me). I've already made quick and easy access to my fuel tank which is a 30-gallon tank, located where the spare tire rack use to be (under the bed at the rear of the truck).

Alan

35terraplane 03-28-2011 12:58 PM

fuel pump and fuel line
 
Quote:

Originally Posted by horvath
Thanks, Bruce.

That's a good idea because there's no sock inside my fuel tank on the sending unit and I've been thinking about putting a fuel filter somewhere before the fuel pump.

My truck just came back from new paint and body restoration, too, and I'll be doing something very original with my bed (no kits for me). I've already made quick and easy access to my fuel tank which is a 30-gallon tank, located where the spare tire rack use to be (under the bed at the rear of the truck).

Alan

If you put a filter between tank and filter, you had better plan on a ball valve or shut-off as it will be lower than the tank and be good for a gas bath without one.

Bob

horvath 03-28-2011 01:35 PM

Thanks for that, Bob.

What about putting a new sock in the tank, where it's suppose to be.

There's no sock on mine, but I'm gonna see if they sell 'em at the auto parts store in the morning.

Alan

techinspector1 03-28-2011 03:44 PM

Quote:

Originally Posted by horvath
Wearing a hole in the tubing is exactly what I was concerned about with running the fuel line inside the frame rail ... I can't imagine how you could secure it!

Sprayed-in foam.

horvath 03-28-2011 04:27 PM

HA! I hadn't thought about that one!
:cool:

Alan

S10 Racer 03-28-2011 05:21 PM

Quote:

Originally Posted by horvath
Thanks, Bruce.

That's a good idea because there's no sock inside my fuel tank on the sending unit and I've been thinking about putting a fuel filter somewhere before the fuel pump.

My truck just came back from new paint and body restoration, too, and I'll be doing something very original with my bed (no kits for me). I've already made quick and easy access to my fuel tank which is a 30-gallon tank, located where the spare tire rack use to be (under the bed at the rear of the truck).

Alan

30 gallons? That'll cost ya a dollar or two to fill up. :D

S10 Racer 03-28-2011 05:26 PM

Quote:

Originally Posted by techinspector1
I'm not sure how aluminum will react with the ethanol in fuels today, but I doubt it will be pretty.

I'm not sure either but with only 10% ethanol in gas I wouldn't think it would be that bad. If it hurts an aluminum gas line, there goes the carb, intake & pistons too.


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