[DeTomaso] What Positions the gas tank, and Short Fuel Filler Hose ID?

[jderyke at aol.com]

 Originally, the stock tank sat on two small fiber pads, one on each side of that lap-welded frame seam. Over the years, the pads disintegrate from vibration and splashed-up water. Some cars reportedly soaked up enough water in the fiber pads and actually rusted out the uncoated tank bottoms at those spots. 
The apparent tank location was only by the hold-down strap and you can reposition the tank (when its empty- a full tank has 135 lbs of fuel inside) by sliding it around a little. As far as the alignment of the L-model outside filler connections, I've never seen one that was anywhere close to having the two parts aligned. 
Be SURE to use fuel-proof hose to connect the two parts! Using radiator hose absolutely guarantees a fuel leak from a failed hose, and a gas smell in the cabin. As yet another corollary of Murphy's Law, the hoses usually fail on the bottom where the crack is not easily seen.           
    On Friday, May 31, 2024 at 02:45:37 PM PDT, Ken Green via DeTomaso <detomaso at server.detomasolist.com> wrote:   

 Is alignment of the filler attached to tank, and the tubing it connects to, what determines the position of the tank?  No other exact positioning features?

Looks like 2.25 inch ID, but I assume was metric?

Having Hall Pantera build a SS tank for an in-tank EFI pump and need to provide enough flat surface for the pump flange.  Need to measure the flat surface in ahead of the strap for the pump flange.  Because the strap is positioned by the body, need to correctly position the tank to see how much space there is.  

Can any one conveniently measure how much flat top gas tank surface for the pump flange is ahead of the strap before the first bend?

Thanks,

Ken_______________________________________________


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-------------- next part --------------
   Originally, the stock tank sat on two small fiber pads, one on each
   side of that lap-welded frame seam. Over the years, the pads
   disintegrate from vibration and splashed-up water. Some cars reportedly
   soaked up enough water in the fiber pads and actually rusted out the
   uncoated tank bottoms at those spots.
   The apparent tank location was only by the hold-down strap and you can
   reposition the tank (when its empty- a full tank has 135 lbs of fuel
   inside) by sliding it around a little. As far as the alignment of the
   L-model outside filler connections, I've never seen one that was
   anywhere close to having the two parts aligned.
   Be SURE to use fuel-proof hose to connect the two parts! Using radiator
   hose absolutely guarantees a fuel leak from a failed hose, and a gas
   smell in the cabin. As yet another corollary of Murphy's Law, the hoses
   usually fail on the bottom where the crack is not easily seen.

   On Friday, May 31, 2024 at 02:45:37 PM PDT, Ken Green via DeTomaso
   <detomaso at server.detomasolist.com> wrote:
   Is alignment of the filler attached to tank, and the tubing it connects
   to, what determines the position of the tank?  No other exact
   positioning features?
   Looks like 2.25 inch ID, but I assume was metric?
   Having Hall Pantera build a SS tank for an in-tank EFI pump and need to
   provide enough flat surface for the pump flange.  Need to measure the
   flat surface in ahead of the strap for the pump flange.  Because the
   strap is positioned by the body, need to correctly position the tank to
   see how much space there is.
   Can any one conveniently measure how much flat top gas tank surface for
   the pump flange is ahead of the strap before the first bend?
   Thanks,
   Ken
   _______________________________________________
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   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

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