what size braided lines

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Posted (edited) · Report post

what size braided lines would I use for fuel lines from the fuel cell to the pump on a pro mod engine. What size fuel lines would I use going to the intake?? Also, what size fittings would be used with those lines and would they be regular or compression, or would you put the two fittings together??

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Edited by HNTR

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Posted · Report post

What scale car are you building?

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Posted · Report post

1/25 scale

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Posted (edited) · Report post

In 1/25, 1mm roughly equals 1 inch in 1:1. Also 1mm = 0.040" (0,03937"). Therefore, a 1/2 inch line = .5mm or 0.20". A fitting that needs a 1 inch wrench would be 1mm or 0.04".

Edited by wisdonm

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Posted · Report post

So what size lines are used on the 1:1?

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Posted · Report post

Probably AN -8 or larger. Everything fuel in that photo up to the barrel valve appears to be -8. A -8 AN line is approximately 1/2" ID. From the barrel valve to the nozzles appears to be -6.

Available Hose Sizes -2 -3 -4 -5 -6 -8 -10 -12 -16 -20 Hose Size is the measurement of the Inner Diameter of the hose measured in units of 1/16th of an inch. Examples: a -2 hose has an I.D. of 1/8" [306 only] a -3 hose has an I.D. of 3/16" a -4 hose has an I.D. of 1/4" a -5 hose has an I.D. of 5/16" a -6 hose has an I.D. of 3/8" a -8 hose has an I.D. of 1/2" a -10 hose has an I.D. of 5/8" a -12 hose has an I.D. of 3/4" a -16 hose has an I.D. of 1" a -20 hose has an I.D. of 1 1/4"

Aircraft-style braided hose uses specific fittings that match the hose being used. You use AN-8 fittings with AN-8 hose. The couplings are not standard 'compression' style; they have a specific 37degree flare and MUST be used with matched components.

You can get 1:1 outside dimensions for the fittings from sites like Earl's Supply, Aeroquip, or Russell's. Or you can buy some of the excellent aftermarket ones, in scale.

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