Home » Public Forums » GMCnet » [GMCnet] Nice Summary from Goodyear
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| Re: [GMCnet] Nice Summary from Goodyear [message #191453 is a reply to message #191450] |
Tue, 27 November 2012 22:21   |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Rob:
Here's the Gates spec.
It claims "Gasohol Resistant"
http://www.gates.com/australia/brochure.cfm?brochure=9606&location_id=12132
Now I'm really, really confused.
Dolph
On Nov 27, 2012, at 10:34 PM, Rob Mueller wrote:
> Dolph,
>
> I noticed something interesting about this info - it appears that Goodyear has changed the formula for SAE 30R6 and it is now OK for
> GAS/ETHANOL blends?
>
> SAE 30R6
> Specially designed low pressure hose for gas and GAS/ETHANOL blends in carbureted vehicle applications. Resists gas, oil, diesel
> fuel. (Not recommended for use with Biodiesel- See J30R9)
>
> Regards,
> Rob M.
>
> -----Original Message-----
> From: Dolph Santorine
>
> Interesting summary.
>
> http://www.goodyearep.com/ProductListing.aspx?folderid=1036
>
> I had a coil of line left over from about 10 years back (boating). It was R7. FWIW.
>
> Dolph
>
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| Re: [GMCnet] Nice Summary from Goodyear [message #191777 is a reply to message #191776] |
Fri, 30 November 2012 19:09 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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| Robert Mueller wrote on Fri, 30 November 2012 18:57 |
Dolph,
I will dropping the tanks on Double Trouble to:
1) install in tank pumps...
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Rob, Can you explain why you would want the in tank pumps vs inline pumps?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Nice Summary from Goodyear [message #191789 is a reply to message #191780] |
Fri, 30 November 2012 20:01 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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| Robert Mueller wrote on Fri, 30 November 2012 19:34 |
Kerry,
Sure, after all the emails I have read discussing vapor lock I reckon the best way to prevent it is put the tanks in the pump like
Emery did...
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I can buy that and obviously I haven't been on here long enough to have read all the probably hundreds of posts on this subject. I'm just wondering from a 'fluids' perspective, why pushing the fuel from inside the tank would have any different result than sucking it out a hard line with an inline pump mounted near the tank (and easy to replace) and letting the pump push it on to the engine?
Is the vapor lock happening INSIDE the tank?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Nice Summary from Goodyear [message #191793 is a reply to message #191441] |
Fri, 30 November 2012 20:11 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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Kerry,
Not Rob, but, the shorter of a distance the fuel is under vacuum in the lines, the less opportunity there is for it to boil. Vacuum reduces boing points, just like radiator (or fuel) pressure increases them. Having said that, I had a good talk with Jim K out at Amana Colonies about this. I told him I was thinking of going to in-tank pumps and hard lines, and he said that most of the people who mounted the pumps outside the frame rails and relatively close to the tanks weren't having problems. And, he said it saves a lot of effort if a pump goes bad. (At least it does if you don't cut the holes in the floor, which I think I'm too lazy to do . . .) Also, helps a little with swapping pumps if I ever make the leap to fuel injection.
I have a sloped driveway, and when I put it away for the winter nose down, something was leaking at the top of the front tank. Turned it around on the hill, and seems to have stopped for now. I think I'm going to take about a 45 gallon trip in the spring, and then tear into it.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] Nice Summary from Goodyear [message #191801 is a reply to message #191793] |
Fri, 30 November 2012 20:47 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Craig,
Agreed.
I have a small Facet pump installed in between the Aux tank and the selector valve that comes on when I switch to AUX. Up until this
past summer it "fixed" vapor lock problems by pumping fluid to the mechanical fuel pump. However, this past summer when we were
heading up the Rockies I discovered that if my AUX tank didn't have a lot of gas in it the pump didn't "fix" the vapor lock
problems. I reckon the in tank problems is the BEST solution; especially when one considers the possibility of ethanol going to 15%.
When I park Double Trouble for storage I fill the tanks all the way up until I see fuel in the filler neck. The vent check valve
doesn't seal off too good and sometimes I get a puddle under the carbon canister. I was told to do this by Ken Frey to keep moisture
out of the fuel tank as it WILL rust them out. JimB has noted the same thing.
Regards,
Rob M.
-----Original Message-----
From: Craig Lechowicz
Kerry,
Not Rob, but, the shorter of a distance the fuel is under vacuum in the lines, the less opportunity there is for it to boil. Vacuum
reduces boing points, just like radiator (or fuel) pressure increases them. Having said that, I had a good talk with Jim K out at
Amana Colonies about this. I told him I was thinking of going to in-tank pumps and hard lines, and he said that most of the people
who mounted the pumps outside the frame rails and relatively close to the tanks weren't having problems. And, he said it saves a
lot of effort if a pump goes bad. (At least it does if you don't cut the holes in the floor, which I think I'm too lazy to do . .
.) Also, helps a little with swapping pumps if I ever make the leap to fuel injection.
I have a sloped driveway, and when I put it away for the winter nose down, something was leaking at the top of the front tank.
Turned it around on the hill, and seems to have stopped for now. I think I'm going to take about a 45 gallon trip in the spring,
and then tear into it.
--
Craig
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Nice Summary from Goodyear [message #191817 is a reply to message #191441] |
Fri, 30 November 2012 21:59 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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Rob,
Yes, in tank is definitely the best from a system standpoint. Can't be a coincidence that the auto industry has built a billion and a half or so of them since going to fuel injection at the turn of the eighties. I could switch to that still, but Jim K, did a pretty good job of convincing me I'd be happy with the Carter in line pumps. I think Bob Drewes was kind of liking those too. I guess I'll noodle on it over the winter. My other sickness is Fiero's and I've owned two and changed two in-tank pumps, so that makes me a little gun shy. Lots easier to do on a 10 or 12 gallon tank, though. The latest GM stuff uses something called a demand fuel system, which uses electronics to change/turn off pump speed instead of a fuel pressure regulator. With the higher port fuel injection pressures, and high under hood temps, and lotso ethanol, pumping fuel back and forth to the engine was heating the fuel in the tanks too much and making it hard to meet evaporative emissions standards.
I think brooming the tank switching valve and the mechanical fuel pump will help a lot for both of us as well.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] Nice Summary from Goodyear [message #191818 is a reply to message #191441] |
Fri, 30 November 2012 22:01 |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma: -4
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Senior Member |
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Pumps are far more efficient at "blow" than "suck".
About the most distance you can suck water (or gas) out of a hole is 33
ft. And that's regardless of pump power. You're limited by the weight of
the air above your source.
You can pump it to hundreds of feet if your pump is strong enough.
ronC
On Fri, 30 Nov 2012 19:09:18 -0600 Kerry Pinkerton <Pinkertonk@MCHSI.com>
writes:
>
>
> Robert Mueller wrote on Fri, 30 November 2012 18:57
> > Dolph,
> >
> > I will dropping the tanks on Double Trouble to:
> >
> > 1) install in tank pumps...
>
>
> Rob, Can you explain why you would want the in tank pumps vs inline
> pumps?
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being
> re-bodied as an Art Deco car hauler
> _______________________________________________
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Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
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Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
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| Re: [GMCnet] Nice Summary from Goodyear [message #191844 is a reply to message #191835] |
Sat, 01 December 2012 07:46 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Damn,
The secrets out - Mueller is dyslexic! ;-)
Regards,
Rob M.
-----Original Message-----
From: Steven Ferguson
Must be a huge pump Rob :>)
On Fri, Nov 30, 2012 at 6:34 PM, Rob Mueller <robmueller@iinet.net.au>wrote:
Kerry,
Sure, after all the emails I have read discussing vapor lock I reckon the best way to prevent it is put the tanks in the pump like
Emery did.
Regards,
Rob M.
Steve
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GMCnet mailing list
Unsubscribe or Change List Options:
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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