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Discussion Starter · #1 ·
Hello to you all,I am about to upgrade my fuelline now but
I have a question.My standard fuelline is 5/16" outside
diameter and I am losing pressure.The 3/8" pipes folks tell
me to use is it 3/8" inside or outside diameter.How much
power can the two lines support?

Have a nice day/Gresse
 

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metal tube is always defined by outside dia. rubber tube is by inside dia. so 3/8 rubber tube will slide onto 3/8 metal fuel line.

so 1 5/8 exhaust pipe is really more like 1 1/2 inside diameter.
 
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