It was a hot day, no breeze, I just got home in the Tiger, and let it
idle in the yard a couple minutes while I got something out of the
garage. I was also interested is seeing if my new horn block off plates
made a difference with the temperature rise (maybe a bit). But before
the temp got too high, I heard the fuel pump (a Facet type) start
clattering away, a sure sign of vapor lock.
So, being an engineer, I wondered what could be done about this.
Relocating the pump to the spare tire well (its now in the stock 1A
location) might help.
But what could I use to cool it in its stock location? Suddenly I
thought of an answer. Fuel!
At idle the fuel flow is extremely slow, giving it plenty of time to
heat up in the pump and the lines. But if it was flowing faster... Has
anyone ever considered putting a "T" in the fuel line up near the engine
and adding a solenoid valve and a return line to the tanks? Then if
vapor lock was detected or expected, the fuel flow could be increased
with no loss, continually cooling the pump and lines with much cooler
fuel from the tanks.
Crazy idea? Any other thoughts?
Stu
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