What VW used is 7mm ID hose and use the higher pressure line - much
better quality than the low pressure line anyway.
-- 
Jim Thompson
84 GL 1.9 "Gloria"
84 Westfalia 2.1 "Ole Putt"
72 411 Station Wagon "Pug"
75 914 1.8 "Nancy"
Full Timing Since March 1999
oldvolkshome@gmail.com
http://www.oldvolkshome.com
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On Sat, Sep 10, 2011 at 6:52 PM, Steve Williams
<steve@williamsitconsulting.com> wrote:
> Hi,
>
> I am in the middle of re-sealing my gas supply system. �I recently did
> the gas tank reseal, complete with the bits of hoses to the expansion
> tanks. �Unfortunately, I didn't have any hose to replace the gas
> tank->fuel pump, and the gas return into the tank.
>
> Of course, now that I am going to do those two bits of hoses, I have a
> full tank of gas :-(
>
> I got the right size for the gas tank->fuel pump and got it installed
> with only minor spillage (outside).
>
> I slid the crawler over to the driver's side, crept under the propane
> tank and cut a piece of the same (large) size of gas line.
> Disconnecting the hose from the gas tank, I watched as it poured out of
> a much smaller pipe than the outlet... the piece of hose in my hand (12
> mm?) was just too huge. �A bit stunned, I shoved the old piece of hose
> back on, clamped it down and am letting the ample spillage (I was a bit
> dumbstruck) evaporate.
>
> Does anyone know what size of hose the "return" on the gas tank of a
> 1991 Westfalia/Vanagon is?
>
> Also, I made an assumption that this would be low pressure fuel line,
> not the higher pressure injector hose. �Was that a correct assumption?
>
> Thanks,
> Steve W.