23-10-2015, 06:43 AM
The cone angle is the bit that's easy to find out (as said, it's in the part number). It's the angle of the "cone" of fuel that is produced by the injector. Plane angle (the angle the injector is mounted in the head) is what we struggle with for HDi's, as most of the bigger nozzles are from 16v engines and therefore have a 0 degree plane angle and are not suitable. It's also difficult to find data for, unless you have a head to measure up.
Then we run into bigger issues. Due to the plane angle meaning the cone is offset to hit the piston bowl, the injector nozzle must also sit at the correct rotation angle in the head, otherwise the fuel will miss the piston bowl and cause poor running, melt the pistons, glaze the bores etc., depending on how badly it's out.
Then we run into bigger issues. Due to the plane angle meaning the cone is offset to hit the piston bowl, the injector nozzle must also sit at the correct rotation angle in the head, otherwise the fuel will miss the piston bowl and cause poor running, melt the pistons, glaze the bores etc., depending on how badly it's out.
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