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| [GMCnet] Replacement rubber lines [message #190534] |
Sat, 17 November 2012 03:43  |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Have we all agreed to the following, for fuel lines?
---------------------------------
But at least all the long runs between the bits & pieces are now Polyarmor
and all the short connectors are 30R14, as you suggested (saving me a lot
of money vs 30R9). kenh
-------------------------------------
I recently found my 2 year-old , coastguard approved, $5 a foot , had to be
replaced (pictures to follow)
- these were not attacked by the new gas,
- they cracked from the outside in
- cracked open, (leaked) on any bends in the rubber
- all lines from the senders, out,
- all the way to the TBI,
- had to be replaced with metal,
- and short rubber couplers
so
is this the current rubber selection?
30r14
gene
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Replacement rubber lines [message #190535 is a reply to message #190534] |
Sat, 17 November 2012 05:00  |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Gene,
I went through the same. I bought the best available and within two
years, it had begun cracking on the outside. I got mad and replaced nearly
all of the long runs of soft line with hard. With the exception of a
couple of 2" pieces to connect the senders to the hard "across the top of
the tank" lines, nearly all of the lines on my GMC were hard. I think it's
the only real answer. The new stuff I got with my MSD Atomic EFI had the
barrier inner.
On Sat, Nov 17, 2012 at 2:43 AM, gene Fisher <mr.erfisher@gmail.com> wrote:
> Have we all agreed to the following, for fuel lines?
> ---------------------------------
> But at least all the long runs between the bits & pieces are now Polyarmor
> and all the short connectors are 30R14, as you suggested (saving me a lot
> of money vs 30R9). kenh
> -------------------------------------
>
> I recently found my 2 year-old , coastguard approved, $5 a foot , had to be
> replaced (pictures to follow)
>
> - these were not attacked by the new gas,
> - they cracked from the outside in
> - cracked open, (leaked) on any bends in the rubber
> - all lines from the senders, out,
> - all the way to the TBI,
> - had to be replaced with metal,
> - and short rubber couplers
>
> so
>
> is this the current rubber selection?
> 30r14
>
> gene
>
>
>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
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| Re: [GMCnet] Replacement rubber lines [message #190545 is a reply to message #190534] |
Sat, 17 November 2012 08:02 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Mr ERFisher wrote on Sat, 17 November 2012 04:43 |
Have we all agreed to the following, for fuel lines?
---------------------------------
But at least all the long runs between the bits & pieces are now Polyarmor and all the short connectors are 30R14, as you suggested (saving me a lot of money vs 30R9). kenh
-------------------------------------
I recently found my 2 year-old , coastguard approved, $5 a foot , had to be replaced (pictures to follow)
- these were not attacked by the new gas,
- they cracked from the outside in
- cracked open, (leaked) on any bends in the rubber
- all lines from the senders, out,
- all the way to the TBI,
- had to be replaced with metal,
- and short rubber couplers
so
is this the current rubber selection?
30r14
gene
|
Gene,
Fuel lines J30R9 and J30R14 are both SUPPOSED to be ethanol resistant - internally.
The difference is that the 9 is 180psi test pressure and is intended for use in fuel injection systems and 14 is 50psi and intended for use with conventional carburetor systems. The only difference is supposed to be the internal braid.
There is some other (hugely expensive number - that I don't recall) that is for service inside a fuel tank.
Could you please include the specification that is printed on the lines that cracked. (If you can read it.)
Thanks
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Replacement rubber lines [message #190591 is a reply to message #190574] |
Sat, 17 November 2012 17:07 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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That's the same line that was put on The Pig at leAst 4 years ago by the p.o. Still looks / feels great Rob.
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 17, 2012, at 1:20 PM, "Rob Mueller" <robmueller@iinet.net.au> wrote:
> G'day,
>
> J30R-7 is also SUPPOSED to be ethanol resistant:
>
> http://www.goodyearep.com/productsdetail.aspx?id=10526
>
> I damn sure hope it is as that's what's I re-plumbed Double Trouble with four years ago. I will check the condition of the fuel
> lines next time I'm back there. Internally it appears to be OK as I have a filter just upstream of the mechanical fuel pump which I
> remove at the end of each season and blow through. It too was installed four years ago and it's fine.
>
> It is possible that this is not a spec problem so please note the manufacturer and when you bought it as well. It could be one
> manufacturer and possibly even a bad batch.
>
> IIRC JimB noted this problem on his Daily Pose awhile back.
>
> Regards,
> Rob M.
> USAussie - Downunder
>
> -----Original Message-----
> From: Matt Colie
>
> Gene,
>
> Fuel lines J30R9 and J30R14 are both SUPPOSED to be ethanol resistant - internally.
> The difference is that the 9 is 180psi test pressure and is intended for use in fuel injection systems and 14 is 50psi and intended
> for use with conventional carburetor systems. The only difference is supposed to be the internal braid.
>
> There is some other (hugely expensive number - that I don't recall) that is for service inside a fuel tank.
>
> Could you please include the specification that is printed on the lines that cracked. (If you can read it.)
>
> Thanks
>
> Matt
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Replacement rubber lines [message #190592 is a reply to message #190535] |
Sat, 17 November 2012 17:32 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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> Gene,
> I went through the same. I bought the best available and within two
> years, it had begun cracking on the outside. I got mad and replaced nearly
>
YES ME TOO
> all of the long runs of soft line with hard. With the exception of a
> couple of 2" pieces to connect the senders to the hard "across the top of
> the tank" lines, nearly all of the lines on my GMC were hard. I think it's
> the only real answer.
yes it is not the ethanol problem
gene
The new stuff I got with my MSD Atomic EFI had the
> barrier inner.
>
> On Sat, Nov 17, 2012 at 2:43 AM, gene Fisher <mr.erfisher@gmail.com>
> wrote:
>
> > Have we all agreed to the following, for fuel lines?
> > ---------------------------------
> > But at least all the long runs between the bits & pieces are now
> Polyarmor
> > and all the short connectors are 30R14, as you suggested (saving me a lot
> > of money vs 30R9). kenh
> > -------------------------------------
> >
> > I recently found my 2 year-old , coastguard approved, $5 a foot , had to
> be
> > replaced (pictures to follow)
> >
> > - these were not attacked by the new gas,
> > - they cracked from the outside in
> > - cracked open, (leaked) on any bends in the rubber
> > - all lines from the senders, out,
> > - all the way to the TBI,
> > - had to be replaced with metal,
> > - and short rubber couplers
> >
> > so
> >
> > is this the current rubber selection?
> > 30r14
> >
> > gene
> >
> >
> >
> >
> >
> > --
> > Gene Fisher -- 74-23,77PB/ore/ca
> > “Give a man a fish; you have fed him for today --- give him a URL and
> > -------
> > http://gmcmotorhome.info/
> > Alternator Protection Cable
> > http://gmcmotorhome.info/APC.html
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Fathom the hypocrisy of a nation where every citizen must prove they have
> health insurance......but not everyone has to prove they're a citizen.
> Steve Ferguson
> Sierra Vista, AZ
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Replacement rubber lines [message #190629 is a reply to message #190534] |
Sun, 18 November 2012 06:46 |
GMCNUSA
Messages: 283
Registered: August 2006
Location: Indianapolis, IN
Karma: 0
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Senior Member |
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I put on all Goodyear 30R9 4 years ago and they seem to be just like the day I installed except for some road grime. Indiana has almost all ethanol fuel so my lines have been exposed since new. This was at the time $3 per foot blue inner barrier hose. Of course now that I bragged, in the spring my hoses will be bad. LOL!
| Mr ERFisher wrote on Sat, 17 November 2012 04:43 |
Have we all agreed to the following, for fuel lines?
---------------------------------
But at least all the long runs between the bits & pieces are now Polyarmor
and all the short connectors are 30R14, as you suggested (saving me a lot
of money vs 30R9). kenh
-------------------------------------
I recently found my 2 year-old , coastguard approved, $5 a foot , had to be
replaced (pictures to follow)
- these were not attacked by the new gas,
- they cracked from the outside in
- cracked open, (leaked) on any bends in the rubber
- all lines from the senders, out,
- all the way to the TBI,
- had to be replaced with metal,
- and short rubber couplers
so
is this the current rubber selection?
30r14
gene
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Larry Dilk
Indianapolis, IN
76 Eleganza II
Patterson 455,Turbo City TBI,
Just LOVE It!
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| Re: [GMCnet] Replacement rubber lines [message #190746 is a reply to message #190721] |
Mon, 19 November 2012 11:31 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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| Matt Colie wrote on Mon, 19 November 2012 07:22 |
| RadioActiveGMC wrote on Sun, 18 November 2012 22:35 |
I was told my rubber fuel lines would fail, they to are as perfect as day one, and there isn't a single metal line going to my carb. Maybe the heat from the header burns off all the icky stuff!  jk
|
You live and drive in Arizona. There are fewer locations there that sell crapahol fuel. Do not go to California - Ever. I have had to replace J30R7 lines that I put on my lawn tractor five years ago.
Matt
|
Matt,
As a point of information, Arizona is just about as bad as Kalifornia with Ethanol fuel. It is sold extensively throughout the state with few exceptions. Go to pure-gas.org to see the few locations that sell good gas, mostly in NE, AZ.
Michael, If you have rubber hose between your fuel pump and carburetor, you may want to keep a real close eye on it, or replace it with steel, or braided steel.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Replacement rubber lines [message #190747 is a reply to message #190746] |
Mon, 19 November 2012 11:35 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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Correction to the above, most of the pure gas sites seem to be along the Colorado River in the center of the state, along with a few scattered locations elsewhere, but NONE in any of the more populated areas.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Replacement rubber lines [message #190762 is a reply to message #190729] |
Mon, 19 November 2012 15:01 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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The fuel hose from O Reilly's is Gates & is USA made the hose from Auto Zone is Armor Mark & is USA made. I too would be curious to know what brand has failed in a short time. The hose I removed from mine after 20 + years with Northern and Southern California gas wasn't too bad it surely would have lasted a few more years. It was Gates J30R1 so it probably wasn't meant for ethanol. As I understand it J30R7 and J30R9 are similar but R9 is rated at a higher pressure so if one is bad so is the other. J30R14 has an inner barrier to comply with California Code but is otherwise similar to J30R7. Gates sells either so I would suspect their longevity would be similar. So Gene do recall what brand J30R7 was the problem I would guess it wasn't from O Reilly's as the one here doesn't stock R7 only R14.
Roy Keen
Minden,NV
76 X Glenbrook
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