Technically no... Practical application yes... How's that for avoiding a straight answer?
I am sure you will get a number of conflicting answers, but here is my $0.02 (and worth every bit of it) Back before I downsized, I always ran an electric
"lift pump" on the Perkins
filter system. Logic and system details as follows.
Vacuum levels generated by engine mount mechanical pump are well below the 12-15 psi generated by an electric pump
. Helpful with a partially restricted filter system (always at a critical time).
Running the lift
pump while bleeding the injector pump/injectors saved my thumb from falling off while trying to keep the system full with the mechanical pump lever. Also easier as mehanical pump is on other side of engine from injector pump
Because system is running under pressure rather than vacuum, possible hard to find air leaks
show up as easy to find fuel leaks
. (It happens)
When swapping out filters, lift pump will fill bowls from tank rather than trying to fill in place. Leave bowl loose till it weeps, tighten down and ur done.
If she were mine, this is what I would do... (Your mileage may vary)
I would leave the tanks manifolded together via a 3 way valve. Tank 1, Tank 2 or Both (Think battery
switch) Prevents using a single tank all the time (Old fuel/water in non used tank) while still allowing isolation if known problem. In unknown areas you may wish to fill single tank with suspect fuel to avoid cross contamination if you get a bad batch... Either or.
Both tanks should be fit with a visible fuel/water separator before the 3 way valve (No Filter) Biggest contamination suspect always.
After 3 way valve fit 12psi electric
lift pump. (Good quality automotive is way cheaper than "marine" and adequate) Between pump and filter assembly install a 4psi pressure regulator
to knock pressure down to Racor
rated pressure of 4psi.
Next come filters... You can install one pair for both engines or a pair for each. Depends on your space and budget
500 filters are rated at 60 gal per hour so no problem with capacity. 4 filter set up is just belt and suspenders
Each filter setup consists of 2 Racor 500 filter/water separators. Filter elements are cheap
and compact. much more so than "spin on" types.
Filters are ganged together with a "stack valve" which changes the inlet and outlet at the same time from Filter A to Filter B with one 90 twist. Also has ports
for a pressure guage (remember were blowing now not sucking ) to show pressure drop across the filter element. This setup lets you 10 micron filters will grab 99.9% of the garbage and a 5 in the engine mounts will catch anything else significant.
More info than you really wanted huh? Well it worked for me for a lot of years... Nice to be able to switch over filters with a quick twist and change elements at your convenience