The 7mm hose pushes on and squeezes onto any fittings that are in the
system.  It is such a nice fit that many times, even without a clamp,
unless you put side pressure on the hose, it will not leak.  I am not
sure why anyone would want to sell a 7.5mm hose for this application.
If the customer had an engine fire as a result I would sure hate to be
the vendor that was assuring them that 7.5mm hose would be "just fine".
The whole point of doing this job is to not have to worry about fuel
leaks so I would go with stock which is 7x3mm German hose which is what
we sell in our kits.

Thanks,
Ken Wilford
John 3:16
www.vanagain.com

Chris S wrote:
> The hose I pulled off my 2.1L says 7x3, which I assume is 7mm inner diameter
> and 3mm wall thickness.  The Bus Depot stuff says 7x13, which I assume is
> 7mm inner diameter and 13mm outer diameter.
>
> So that's two hoses that are exactly 7mm for the Vanagon application.
>
> The question I would as would be if the FI clamps can sufficiently tighten
> the 7.5mm hose.  .5mm does not seem like much, but that's high-pressure fuel
> we're talking about.
>
>
>
> 2008/8/10 Allan Streib <streib@cs.indiana.edu>
>
>
>> One of my favorite vendors has fuel injection hose in a 7.5mm
>> diameter.  Anyone think this would be too big?
>>
>> I know one of the "well known" vendors on this list sells 8mm BMW
>> hose as "7mm", so maybe this 7.5mm would be ok??
>>
>> Allan
>> --
>> 1991 Vanagon GL
>>
>>
>
>
>
>