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| | | | Joined: Nov 2008 Posts: 261 'Bolter | | 'Bolter Joined: Nov 2008 Posts: 261 | Hi all,
I relocated my gas tank to the rear of my 1950 1/2 ton truck. thIs is under where the spare tire normally goes. It is a top feed mounted tank and I am having starting my truck. I am keeping the mechanical pump and wondering if it is capable of sucking gas from the top of the take vs from the bottom as it was originally?
the new universal tank is a little higher that the fuel pump but it does not seem to get the fuel up.
Does anyone have experience with one of they universal tanks and a mechanical stock 235 engine pumps?
thanks,
skipper | | | | | Joined: May 2015 Posts: 11,063 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,063 | If all your joints are tight, the pump should have no trouble pulling from the top of the tank.
Later pickups ('54 and up) with the tank mounted in the cab had top connections, as well as the larger trucks that had tanks mounted at the frame.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | The fuel all comes from the bottom of the tank except when first filled, if the fuel tube does not go almost to the bottom of the tank, no matter where the line comes out of the tank, one cannot get fuel when low.
Factory pump should work fine there, by the way, why are you moving the tank?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | Have you tested the pump for proper vacuum? It should develop at least 10 inches of mercury at idle, back where the fuel line enters the tank.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2008 Posts: 261 'Bolter | | 'Bolter Joined: Nov 2008 Posts: 261 | OK, I will check the pump. I have a metal filter and cannot see if fuel is flowing. I have a small glass filter I may install just to see if it is flowing.
The reason I am relocating the tank is because the cab always had a gas smell (wife did not like). Also, I never liked the gas always making the splashing back and forth sound. Also, I think it may be safer having it in the rear as opposed to having it in the cab? I know it is not original but I made a tank cradle and used existing holes in the frame to mount the cradle. I did not drill any additional holes as to not hack up my truck. Not that there is anything wrong with that but I want to keep my truck semi-original with only safety change . | | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | A vacuum gauge does not need a sight glass.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2010 Posts: 10,279 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,279 | What type of fitting is there coming out of the tank? If it is a flared fitting, loosen and tighten it several times while watching where the wrench ends up on each tightening sequence to observe a slight increase in degrees turned. This process will avoid over-tightening, while at the same time, causing the flare to make a very secure fit with the female inverted flare fitting.
If it is a clamped-on hose, make sure that the hose is new and is a snug fit before the clamps are tightened.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | This discussion has moved to the Engine Shop.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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