Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec Injector Spray in Port Matched Oval Port Heads?

.....oval port with offset injector is a compromised
system.It's neither a good spray angle for a twin port
as you are now spraying into an oval in an offset
position and not good for an oval as you still have a
secondary,closed,above the second valve with a 'snake'
airflow and lowered velocity.Only a custom injector
with a clocked nozzle head and modded spray angles,2
for the the 'open' lim and 2 to try to traverse the
added distance from the injector across the port to
the second valve may help the poor spray pattern to
the second valve or a two injector system per
cylinder.....the airfow thru one port of the lim is
off when secondaries are closed and the injector spray
position is off when the secodary is open....neither
is good for fuel mixing .The stoc twin port system
injects air fuel to one port all the time,when the
secondary opens all that does is add more air to water
down the over rich mix in the injector port....that
'final' mix happens in the cylinder .The best place to
get this mix right would be in the port,as a stoc
central injector 3.0 does with an oval port.....might
as well weld in a wall to an oval port and call it quits......