Swapping out the hard fuel line and sediment bowl...

greymond · Jan 7, 2018

As I re assembled my 3400 gasser today I began to wonder why I couldn't swap out the hard fuel line to the sediment bowl and the shorter hard fuel line to the carb? Couldn't I just find a gas fitting that had a tapered barb on it for the fuel pump and then find a similar bigger fitting for the female at the carb and then run 1/4" RUBBER fuel line with an in line filter in it? Seems someone out there might have done this? Can't imagine what harm it would be. It would certainly make dealing with the carb, intake, fuel pump and everything else in the way a whole lot easier AND less prone to leaks!
any thoughts?

Jimmyjack · Jan 7, 2018

Rubber lines asking for fire and problems. I wouldnt do it.

greymond · Jan 7, 2018

good point

Ultradog MN · Jan 8, 2018

Fire from a rubber fuel line is not as much of a concern on a 3 cyl Ford due to the cross flow head.
Fuel/ carb on the right side of the engine, hot exhaust on the left.
Still, the OEM lines, pump, filters, etc do work just fine and even though they are rather circuitous I would keep them original. Yes, they are a pia to work on but one doesn't often have to.
If parts or lines are missing then I would have no qualms about a whole new fuel system.
Tank - to electric pump - to inline filter - to Carb.
Route your rubber lines neatly along the block and they'd be well protected behind the carb, throttle linkage, etc.
If your tractor still has the lower dash tins that cover the steering box you could hide the electric pump in there and make a nice clean job of it.
I'm running my gasser on electric pump now but have all the oem parts to go back to original.
One of these days I will get at it and get that done.

showcrop · Jan 8, 2018

Fire from a rubber line is not really a concern. Fire from a steel line that cracks from vibration and side stress is a concern. The XX0 and XX1 earlier models came from the factory with a rubber part to the line. It is not difficult when making a repair to get a little bend in one of the lines that puts side stress on the line when reassembled.

greymond · Jan 8, 2018

After getting in and getting things apart on my 3400 I realized how much I was pulling and moving the fuel line to the pump. It looked like it had been bent and moved around quite a bit over the years. This ultimately is why I posted this topic.
What size rubber fuel line are people running when they do a rubber line conversion?

Destroked 450 · Jan 8, 2018

I'd want the hard line across the front of the engine.
Considerable risk a rubber line might flex and get a hole rubbed in it by the fan belt or water pump pulley.
Sediment bowl catches any water before it gets in the carb.
You could hang the inline filter lower than the carb and route the line back up to the carb, this would allow any water to settle in the filter.

showcrop · Jan 8, 2018

(quoted from post at 09:06:50 01/08/18) After getting in and getting things apart on my 3400 I realized how much I was pulling and moving the fuel line to the pump. It looked like it had been bent and moved around quite a bit over the years. This ultimately is why I posted this topic.
What size rubber fuel line are people running when they do a rubber line conversion?

I do it as I said the factory did on the old ones. Just install a short rubber section at one end or the other. Just take 1/4 or 5/16 whichever is a tight fit. I usually secure it with two SS hose clamps at each end. I know that you are smart enough to keep it away from moving parts. Steel lines are often sleeved through rubber for added protection from chafing. The rubber will stand up to chafing far better than steel.

Swapping out the hard fuel line and sediment bowl...

greymond

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Jimmyjack

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greymond

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Ultradog MN

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showcrop

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greymond

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Destroked 450

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showcrop

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