Should I move my fuel pump? Options

[Lilchopshop]

I've been working hard on my newly-acquired 73 2.0. Thanks to everyone on this site for all the inspiration and motivation! Currently have engine out, engine compartment stripped, interior stripped, gas tank out. Since the car has been sitting for 30+ years, i decided I would replace all the fuel lines. I plan to buy a complete stainless fuel line kit from Tangerine. In the state I'm at currently, it would be an ideal time to re-locate the fuel pump. I plan to keep the D-jet injection. Should I move the fuel pump to under the tank? Are there any down sides to this? What pump should I get?

Thanks in advance,
Aaron

[JamesM]

Should I move the fuel pump to under the tank?

YES! If you dont do it now, you probably will wind up just doing it later anyways.

Are there any down sides to this?

NO, not if you are already swapping out the lines for SS. and TBH the factory did it without swapping the lines so even that might not be needed, but after 50 years I would.

What pump should I get?

Anything that puts out the necessary pressure. Stock 3 port pump works just fine but i usually like updating to a 2 port just for simplicity in hose routing. 75-76 style pumps could still be had new for a reasonable price last time i looked but those require you also use the 75-76 filter with the huge outlet on them. One of my cars has an MSD pump upfront (overkill) and another has a different bosch 2 port with a 3/8 inlet.


FYI, on my one car that still has a rear mounted pump I have found that the problem becomes much worse if your gas has Ethanol in it due to Ethanols lower boiling point of 173F (yet another reason to buy ethanol free gas). With ambient temps of asphalt on a hot day hitting ~140 and a fuel pump sitting right off the road and inches away from your exhaust its not uncommon for the ethanol to boil in the pump itself, especially at higher altitudes. This is a far more annoying issue to deal with on the side of the road than just boiling it in the engine bay lines as those vapors can be cleared by venting or sometimes just cycling the pump. When the ethanol is boiling on the inlet side of the pump or in the filter though you have to find ways to cool it down (and then keep it cool) if you want to keep the fuel moving and get home.

Just move the pump and forget about it.