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How do I know what size my fuel line is?
How is fuel line size measured? Place the top of a 1/4-inch wrench with an open end over the fuel line. Slide it carefully over the line so that it fits snugly against the tubing. Read the wrench’s measurements to determine the diameter of the fuel line.
What size fuel lines are there?
Most stock applications came with 5/16-inch fuel line, but for many street vehicles and mild race applications 3/8-inch (AN 6) fuel line is a good upgrade. High performance applications and racers using alcohol will use 1/2-inch (AN 8) fuel line.
Can you use rubber hose for fuel line?
Standard rubber vacuum or heater hose should never be used in fuel applications. The hose will deteriorate from the inside out and can plug fuel filters and carburetors with rubber debris, long before it springs an external leak.
What size is an8 fuel line?
Plumbing Basics – AN Fittings & Hoses
| AN Size | Hose i.d. – Tube o.d. | SAE Thread Size |
|---|---|---|
| -4 | 1/4 in. | 7/16 in.-20 |
| -5 | 5/16 in. | 1/2 in.-20 |
| -6 | 3/8 in. | 9/16 in.-18 |
| -8 | 1/2 in. | 3/4 in.-16 |
Is 3/8 fuel line ID or OD?
FYI: Popular fuel line sizes: -6AN (=3/8″ OD) -8AN (=1/2″ OD) -10AN (=5/8″ OD)
What size is an 6 fuel line?
Where every dash number is 1/16 of an inch an AN6 fitting would be equivalent to 6/16″ or 3/8″ Fitting size. AN8 8/16″ or 1/2″ for example.
Can I replace steel fuel line with rubber?
Yes, you can do that. All you need is some regular hose, because 85 was either CFI which used very low pressure (13-15 psi if I remember correctly) or carbed, is like 4 psi, but no pressure before the pump… Flair the ends and use hose clamps. …
Which fuel line is bigger 3/8 or 5 16?
The Difference Between the Two Sizes The 5/16″ fuel line is actually perfect for smaller outboards. Being a little smaller than the 3/8″ hose, it works great for little kicker motors, and sailboat outboard engines. Like we said in the beginning, the 3/8″ line is required on anything that is larger than a 115 HP engine.