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Scott Stout <squiggles@yahoo.com> wrote:
For a 13b NA,
What size fuel lines are commonly used for forward of the fuel pumps? And prior to the fuel pumps? <<<
I'm sure that using -4 lines everywhere would provide more than enough flow capability. It is best to use a larger line on the suction side, so I'd opt for -6 going to the pumps and -4 out of them. On the Eagle 540 I'm working on we have -8 lines going to the pumps, a -6 line from the pumps, through the selector & out to the fuel rails, and -4 return lines. In ground testing I have seen flow through the system approaching 50gph (measured 48.8), way more flow than you'd even need for a 13B. Checking the fuel flow gauges for accuracy we ran all fuel through the transducers, fuel rails, and back through the return into a container to time it, and that amount of flow was able to pass through the -4 returns.
<Marv>
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