[DeTomaso] Mechanical Fuel Pumps

[JDeRyke at aol.com]

In a message dated 6/28/09 7:20:53 PM, cengles at cox.net writes:

> Jack DeRyke wrote an article about this very topic.  The exact location 
> of the article escapes me, but I bet Jack will chime in and enlighten us.
> 
Yes- many times due to the possibility of crash damage ripping the tank 
bottom like a Kleenex box. The steel is so thin, you can actually punch a 
screwdriver clear thru a good tank with little effort. I suggest running a 
top-mount out-line from the fuel filler or the rollover valve openings rather than 
rigging a Christmas tree of fittings hanging off the bottom. If you 
absolutely must, use a minimum-clearance banjo fitting and a large loop of armored 
flex hose (suitably routed) between the tank & pump, for a strain relief. 
I'm completing an article for next month's newsletter on adapting an 
in-tank fuel pump (exiting out the top) to a stock Pantera fuel tank. This is not 
a 'teaser'; I had some unplanned problems with this adaption to our '72, but 
its now done except for on-street testing. This should eliminate fuel 
boiling and vapor-lock, and with a bit more work, provide a larger fuel-out line 
for high horsepower engines. As most know, the stock Pantera fuel-out line- 
either early or late tank- restricts fuel flow enough to limit horsepower to 
around 450 real horses, give-or-take a few. Increasing the ID of the 
out-line to at least 3/8" cures this restriction for our street machines. Real 
race cars use 1/2" ID fuel lines from tank pickup all the way to the carb 
inlets.   Cheers-- J Deryke


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