>
>> In 2010 while the GMC was on the hoist waiting for the engine to be rebuilt, I had the tanks dropped and all the fuel lines changed.
>>
>> In 2014 while waiting to leave a rally I flipped the tank switch and a few moment later the coach stumbled, quit and would not restart. I had the
>> laptop connected and noticed the EBL was reporting very little fuel pressure. Flipped the switch back to the original tank, fuel pressure was back
>> and the coach restarted and drove home. Back home I dropped the tanks and found the fuel out line on the top of the tank had deteriorated, hard and
>> cracked after only 4 years. The hose was SAE 30R7 with a date code of 2007.
>>
>> When I had my hoses replaced in 2007, my hoses were in this sorry condition. I assume they were OEM
>>
>> I replaced all the hose with 30R9 hose and installed steel lines above the tanks.
>>
>> I would like to put the metal lines above the tanks. HOW DO YOU CONNECT/SEAL to the tanks?? If the tanks can be connected to metal lines
>> permanently, the rubber hoses can much more easily be replaced when needed.
Connecting metal lines to the fuel tanks is not difficult.
Here is my presentation on installing in-tank fuel pumps. It shows how to cut the swedged end from the fuel pickup lines and the use of brass compression fittings to connect the metal lines to the cut ends of the pickup tubes..
Even if you are not putting in-tank fuel pumps into the tanks this is a good way to eliminate the rubber hoses. I installed metal lines all the way from the fuel tanks to the throttle body (TBI) or carb if that is what you are using.
http://www.gmcmi.com/wp-content/uploads/2013/02/In_tank_Fuel_Pump_Presentation.pdf
For the rubber vent lines I installed steel lines over the top of the fuel tanks and down to the sides of them. This would allow me to monitor the rubber vent lines and easily replace them if needed without dropping the tanks.
Contact me if you need more information of suggestions.
Emery Stora
77 Kingsley
Frederick, CO
>> In 2010 while the GMC was on the hoist waiting for the engine to be rebuilt, I had the tanks dropped and all the fuel lines changed.
>>
>> In 2014 while waiting to leave a rally I flipped the tank switch and a few moment later the coach stumbled, quit and would not restart. I had the
>> laptop connected and noticed the EBL was reporting very little fuel pressure. Flipped the switch back to the original tank, fuel pressure was back
>> and the coach restarted and drove home. Back home I dropped the tanks and found the fuel out line on the top of the tank had deteriorated, hard and
>> cracked after only 4 years. The hose was SAE 30R7 with a date code of 2007.
>>
>> When I had my hoses replaced in 2007, my hoses were in this sorry condition. I assume they were OEM
>>
>> I replaced all the hose with 30R9 hose and installed steel lines above the tanks.
>>
>> I would like to put the metal lines above the tanks. HOW DO YOU CONNECT/SEAL to the tanks?? If the tanks can be connected to metal lines
>> permanently, the rubber hoses can much more easily be replaced when needed.
Connecting metal lines to the fuel tanks is not difficult.
Here is my presentation on installing in-tank fuel pumps. It shows how to cut the swedged end from the fuel pickup lines and the use of brass compression fittings to connect the metal lines to the cut ends of the pickup tubes..
Even if you are not putting in-tank fuel pumps into the tanks this is a good way to eliminate the rubber hoses. I installed metal lines all the way from the fuel tanks to the throttle body (TBI) or carb if that is what you are using.
http://www.gmcmi.com/wp-content/uploads/2013/02/In_tank_Fuel_Pump_Presentation.pdf
For the rubber vent lines I installed steel lines over the top of the fuel tanks and down to the sides of them. This would allow me to monitor the rubber vent lines and easily replace them if needed without dropping the tanks.
Contact me if you need more information of suggestions.
Emery Stora
77 Kingsley
Frederick, CO
