Bruce---The standard metal fuel line from the pump to the carburetor
should not contact any hot engine parts directly. One of the line clamps
at the thermostat should be rubber insulated, and besides, we want the
fuel to be warmed up on a street-driven engine. Taking the routing
around to the grill area can be untidy, and in harm's way in a frontal
collision.
Properly designed heat shields look nice and racy, and they may be of
some benefit if certain headers are being used. Otherwise, unless the
engine sees a lot of race time where the coolest fuel can help ward off
detonation, there's nothing inheritantly wrong with the stock fuel line
routing.
Remember that fuel is constantly being used up in normal motoring, so it
doesn't sit around long enough to get overly warm.
If you have coolant going into and out of the intake manifod piping,
this helps a great deal in controlling the maximum temperature this part
can reach.
Dick
82 in L.A. today
(That's temperature, Ted. Not age...
From: brucesimms2003@yahoo.ca(Bruce SimmsSubject: Pump to Carbs Fuel
Line Routing - Fuel Vapourization?
Several 6 owners in my club have re-routed their pump to carb line so
that it crosses the car around the top of the grill. They claim that
the factory route around the top front of the head is too hot an area
and can lead to fuel vapourization. Not really that hard to do, but is
it worth the effort?
My line changes from steel (copper?) to rubber hose about 1/2 way across
the front of the head. Most of my rubber line to the split in the hose
is wrapped in heat reflective tape from the auto parts store. I have
HS6s and headers.
I also note development of a carb heat shield for the 6. Is this
worthwhile for street performance?
Thank you,
Bruce Simms CF1941UO
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