David McN

        I would suspect that the answer would depend A Lot on the Quality of Hose

that You used back in '08 ~ But probably a Thorough Inspection is In Order & If

the decision is that it Looks OK then maybe add that inspection to a SpringTime

Before going traveling Check List & Play It By Eye ~

                                                        ORR ~ DeanB

On 2 Aug , 2020, at 12:18 PM, David McNeely wrote:

> Dennis, you are onto something, but another group I respect greatly seems
> not to have considered the static concern to be a problem, or else has
> simply not considered it.  GoWesty sells a grommet specifically for the
> purpose of running a hose through the hole in the "firewall."  My 1991
> Volkswagen Vanagon GL Campmobile has been so equipped since 2008.
> 
> Speaking of 2008, that is when I replaced all the fuel hoses.  I have asked
> before on this list if it is time to do so again, but no one has responded
> to the question.  Is it time?
> 
> Thanks, mcneely
> 
> On Sun, Aug 2, 2020 at 7:53 AM Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
> 
>> I am not sure that this is a good approach. When looking at fuel hoses we
>> look at pressure and temperature ratings and we pay attention to the outer
>> jacket and how it will interface with clamps. What I never see mentioned is
>> conductivity or the ability to dissipate static charges nor the ability to
>> resist electrolysis. That is what really causes hoses to crack and fail on
>> the inside.
>> 
>> Whenever a fluid flows through a tube or hose static charges are
>> generated. Even when you fill a plastic gas can, the can is static
>> dissipative and hence the signs at the filling station advising the
>> container shall be placed on the ground and the nozzle in contact with the
>> container while filling. That plastic tube is a life time part. Hoses are
>> not although the original have lasted 10 -15 years or even more. With VW
>> being cost conscious as they are there is no part or design that doesn't
>> serve some purpose. My thoughts are that the hose sections are kept short
>> for a reason and it could even be that that firewall nipple is a
>> strategically place insulator, in addition to a service feature for engine
>> removal. The longer a hose the higher the static potential can be.  I
>> really don't know, just a thought and all modifications needs thought. I
>> just give the VW engineers credit for knowing a lot more than me.
>> 
>> Dennis
>> 
>> 
>> -----Original Message-----
>> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of
>> Richard Koerner
>> Sent: Saturday, August 1, 2020 7:37 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Fuel hose size
>> 
>> Superb!  Well thought out.
>> 
>>    On Saturday, August 1, 2020, 3:46:04 PM PDT, OlRivrRat <
>> olrivrrat@comcast.net> wrote:
>> 
>>         IMHO,, The Correct Way To Do the Fuel Supply Hose Replacement
>> 
>> & The Way that I Always Recommend that It Be Done is to Run 1 Single
>> 
>> Length of High Pressure Fuel Injection Hose frm Fuel Filter to the Splitter
>> 
>> "T" by the OilBreather Tower ~ You end up with Only 2 Possible Leak Points
>> 
>> Instead of 6 & a Brand New, Really Strong, All 1 ID Hose ~
>> 
>> (I use 225PSI Gates 5/16) It is Pricey Hose @ about $3.50/Ft but only takes
>> 
>> about 6.5Ft >> Way Cheaper than an Engine Fire ~
>> 
>>        Also >> I usually DoNot run the Hose back through the hole left by
>> the
>> 
>> removal of the Old Plastic PasThru Fitting, I just run it under the
>> FireWall &
>> 
>> then it aligns nicely with passing under the Intake ~
>> 
>>                                                        ORR ~ DeanB
>> 
>> 
>> On 31 Jul , 2020, at 7:03 PM, Rob wrote:
>> 
>>> 7.5mm, thank you. The last time I did this the plastic tube was a good
>>> fit inside the hose, I ran it in 6" or so & used two clamps with no
>>> leaks. I was planning on doing this again.
>>> 
>>> Rob
>>> vwrobb@gmail.com
>>> 
>>> 
>>> On Fri, Jul 31, 2020 at 3:30 PM Dennis Haynes
>>> <d23haynes57@hotmail.com>
>>> wrote:
>>> 
>>>> At some point VW went to a 7.5mm ID hose in part to reduce reliance
>>>> on the clamps. For the firewall fitting it gets a bad rap. A more
>>>> common place to leak is where the hose attaches to the plastic tube
>>>> from the filter. Hose selection and clamp choice and installation is
>>>> extremely critical. Too lose and the hose slides off or leaks, too
>>>> tight and the plastic tube collapses especially after some heat. On
>>>> other vehicles that use this type of tube a sleeve goes inside to
>> support the tube from collapsing.
>>>> 
>>>> Spring or crimp clamps are the best choice here.
>>>> 
>>>> It is worth noting the OEM the hoses on the engine and outside the
>>>> compartment are different part numbers-construction. With the
>>>> aftermarket stuff we go from 10-15 year hoses to 2-5!
>>>> 
>>>> Dennis
>>>> 
>>>> 
>>>> -----Original Message-----
>>>> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of
>>>> Rob
>>>> Sent: Friday, July 31, 2020 4:59 PM
>>>> To: vanagon@GERRY.VANAGON.COM
>>>> Subject: Fuel hose size
>>>> 
>>>> What size fuel hose do I need to replace the one from the firewall
>>>> plastic fitting to the engine?
>>>> 
>>>> Rob
>>>> vwrobb@gmail.com
>>>> 
>>