Home » Public Forums » GMCnet » Fuel Tank Selector Valve (Do we really need this?)
| Fuel Tank Selector Valve [message #288349] |
Thu, 08 October 2015 07:43  |
aronasoc
Messages: 6
Registered: June 2015
Location: Burlington, WI
Karma: 0
|
Junior Member |
|
|
I am working on my fuel system. I still have the factory original fuel tank selector valve. Do I need this valve, or can I connect the two tank fuel lines to the one line going to the front of the coach? I realize I will not have a fuel reserve capability but I don't run the tanks down to empty anyway. Let me know if there is a function I am missing, or if can I take it out.
Nick Aron
Burlington, WI;
1975 Glenbrook - all original;
1964 Bonneville;
1966 VW Camper
|
|
|
|
| Re: Fuel Tank Selector Valve [message #288352 is a reply to message #288349] |
Thu, 08 October 2015 07:53  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
|
Senior Member |
|
|
You won't be able to access the fuel in the rear tank below the crossover tube. That's the only reason I can think of.
John Lebetski
Woodstock, IL
77 Eleganza II
|
|
|
|
|
|
| Re: Fuel Tank Selector Valve [message #288354 is a reply to message #288349] |
Thu, 08 October 2015 08:38 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
If the fuel is low (~~ 1/4) and you start up a hill, you'll uncover the front pickup and pull air. The engine will stop even though you have fuel in the tanks. You might consider running on the rear alone, which will allow you to run all the gas out except about a fourth in the front tank.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Re: [GMCnet] Fuel Tank Selector Valve [message #288381 is a reply to message #288375] |
Thu, 08 October 2015 21:03 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
|
Senior Member |
|
|
Am I dreaming or did Jim Bounds connect the two fuel tanks with steel
tubing attached where the drain plugs are.
On Thu, Oct 8, 2015 at 4:54 PM, Matt Colie wrote:
> bhayes wrote on Thu, 08 October 2015 12:44
>> Matt, you get 450 miles out of a tank(s) of gas? I must be doing
> something wrong.
>
>
> Bryan,
>
> Work on it....
> We do 400s any time we want.
>
> Our coach runs at 9.2 all most of the time, We have done several 53 gallon
> fills.
> 9.2*53 ~ 490
>
> Remember, this is 9600# 23' coach. I'm sure that doesn't hurt.
>
> Matt
> --
> Matt & Mary Colie - Members GMCMI, GMCES
> '73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
|
|
|
|
|
|
| Re: Fuel Tank Selector Valve [message #288392 is a reply to message #288362] |
Thu, 08 October 2015 22:57 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
|
Senior Member |
|
|
bhayes wrote on Thu, 08 October 2015 12:44Matt, you get 450 miles out of a tank(s) of gas? I must be doing something wrong.
I was about to say that too. I refill at around 250-275 miles which is when the gauges start moving toward "E" in my GMC. I should be able to go about 400-450 miles on a full tank to empty assuming 8+ MPG. I've never tried to do that however and don't plan on starting now. I also almost never top it off in order to avoid gas burping. I will try and top it off when I get $1 off per gallon at Kroger.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
|
|
|
|
| Re: Fuel Tank Selector Valve [message #288396 is a reply to message #288349] |
Fri, 09 October 2015 02:04 |
 |
Jerry Sitzlar
Messages: 206
Registered: February 2013
Location: Lenoir City, TN
Karma: 4
|
Senior Member |
|
|
Nick,
I'm presently working on my fuel system (new lines, etc). I found that my fuel tank selector valve had been removed by a PO and the two tanks teed together. The gauges were still reading for both tanks and pretty accurate. The switch on the dash determines which tank gauge is being viewed. I suspected that something was wrong because I never had to switch tanks. Both tanks would drain equally according to the gauges. Before I removed my tanks I let the engine run until it stopped for lack of fuel. I then opened the drain plugs and drained out about a sum total of one quart of fuel (clean with no rust or dirt). During normal operation I never experienced fuel starvation even on 100+ degree days and going up and down hills. I always refueled around 1/8 tank which gave me about 6 gallons between both tanks, unless the generator was being used and then refuel at 1/4 tank.
I have a new selector valve to install with a mounting bracket that I fabricated that mounts to the frame and reverses the valve so that the inlet and outlet ports are in the correct position. However, the fuel lines are 3/8 inch and the connections on the switch are 5/16. I hope I can tighten the clamps tight enough. If the lines leak at the valve or the valve causes a restriction in fuel flow, then the tee goes back on.
Anyway, just my experience so far.
Jerry
Jerry Sitzlar..... 77 Eleganza II, Twin bed, dry bath...... Lenoir City, TN (near Knoxville)
|
|
|
|
|
|
| Re: Fuel Tank Selector Valve [message #288406 is a reply to message #288392] |
Fri, 09 October 2015 09:12 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
|
Senior Member |
|
|
Richard,
There are some huge differences in our coaches and operational modes.
The biggest is that Mary drives most of the time. That leaves me free to navigate, pull refreshments and find cheap fuel. That later cam often instigate and early stop as fuel prices vary widely by state.
A big difference between our coaches is also the high T fuel system. I can run the pump at the fast hook until I am a few gallons short of full with out it burping. On the press-up aka top off, the only time I get a burp that spills fuel is with real high ethanol content. Even then, it isn't much - just enough to be annoying.
We also use an interesting fuel management mode. We start on the main (aka combined tanks) and switch to the auxiliary at the half tank indication. This gets run until the low fuel warning glares at the driver. At that point the switch is back to main and the remaining one-half tank. If a fuel stop is not in the plan at that point, the navigator gets real busy. It is not as tough as single pilot IFR, but the cooperation does make thing much more relaxed.
Matt
rjw wrote on Thu, 08 October 2015 23:57I was about to say that too. I refill at around 250-275 miles which is when the gauges start moving toward "E" in my GMC. I should be able to go about 400-450 miles on a full tank to empty assuming 8+ MPG. I've never tried to do that however and don't plan on starting now. I also almost never top it off in order to avoid gas burping. I will try and top it off when I get $1 off per gallon at Kroger.
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
|
|
|
|
| Re: [GMCnet] Fuel Tank Selector Valve [message #288407 is a reply to message #288381] |
Fri, 09 October 2015 09:18 |
|
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
|
Senior Member |
|
|
Bruce Hart wrote on Thu, 08 October 2015 22:03Am I dreaming or did Jim Bounds connect the two fuel tanks with steel
tubing attached where the drain plugs are.
--
Bruce Hart
Bruce,
You are correct, he does. This is not a mod that I think is all that good for two reasons:
One is that both my fuel tanks and my transmission pan show strike damage. If the fittings required take a hit, you have the potential to loose all your fuel overboard.
The other is that this mod removes any possibility of fuel inventory management.
Still, it is your decision to make and it is your coach.
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
[Updated on: Fri, 09 October 2015 09:19] Report message to a moderator |
|
|
|
Goto Forum:
Current Time: Mon Sep 30 09:32:00 CDT 2024
Total time taken to generate the page: 0.03634 seconds
|
GMCforum
Search
Help
Register
Login
Home
