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914World.com _ 914World Garage _ Fuel hose diameters

Posted by: yarin Feb 7 2006, 05:52 PM

I'm redoing all of the fuel lines with this project. I bought steel brake lines from NAPA for about $4 a piece following pelican's article. I might end up bending the lines with a tube bender instead of using a 90deg fitting.

These are the sizes i've gathered so far:

Supply: 3/8"
Return: 5/16"

Fuel Rail: 5/16"
Fuel pressure regulator: 5/16"
Fuel filter: 3/8"

I'd like to put an inline fuel pressure gauge near the fuel rail using this stuff:

http://store.summitracing.com/partdetail.asp?part=ATM%2D2179
http://store.summitracing.com/partdetail.asp?autofilter=1&part=MRG%2D2975&N=115&autoview=sku

How did you guys put the 3/8" inline on the fuel rail side? With a 5/16" -> 3/8" adapter? Or did you end up placing the inline gauge on the 3/8" side next to the fuel filter?

Posted by: Mueller Feb 7 2006, 05:55 PM

my gauge is inside the engine compartment (fuel pump and filter up front)...used a "t" similar to that fitting and plumbed in before the pressure regulator........

Posted by: yarin Feb 7 2006, 05:59 PM

QUOTE (Mueller @ Feb 7 2006, 03:55 PM)
my gauge is inside the engine compartment (fuel pump and filter up front)...used a "t" similar to that fitting and plumbed in before the pressure regulator........

A 3/8 tee or 5/16 tee?

Posted by: Mueller Feb 7 2006, 06:20 PM

QUOTE (yarin @ Feb 7 2006, 04:59 PM)
QUOTE (Mueller @ Feb 7 2006, 03:55 PM)
my gauge is inside the engine compartment (fuel pump and filter up front)...used a "t" similar to that fitting and plumbed in before the pressure regulator........

A 3/8 tee or 5/16 tee?

i'm pretty sure my fuel line is 8mm...so 5/16"

Posted by: yarin Feb 7 2006, 06:21 PM

Any idea where I can get that adapter in 8mm / 5/16" ?

It doesn't seem to exist anywhere.

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