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05-17-2006 #1
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FF, your testing experience is based on a very low flow, low pressure application. I would actually tend to agree with your testing results based on that application. Jumping from a 15psi system that has very little actual pressure fluctuation to a 60psi system with large swings as much as 15psi is a big difference.
My "testing" is not done on a flow bench under very easy to duplicate conditions but in the real world based off of personal experience working in the field hands on for over 15 years.
The heat issue is not a result of line friction but rather heat induction as a result of stagnate fuel sitting to close to the aforementioned exhaust and engine compartment. If the fuel doesn't flow readily it will pick up heat.
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05-17-2006 #2
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Like the factory= cheapest way to produce something.
And this isn' true in all cases- there are many return-less sytems out now that use simple internal ports in the pump for regulation (in tank). As far as choking the system, that's a simple matter of using the right line / hose / fittings. My point was that even if he had a perfect -12 running all the way back with minimal restrictions, his limiting factor is still the -6 return port / fitting.
Jody- I can see why you had the prob; the factory 5/16" lines are notorious for crappy flow (either way).
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