on facebook i saw a video from "Alex Performance". He fitted the 674s injectors in his 1.9 JTDm 16v and run it with 2500bar (upgraded pump off course).
These injectors are used in the 2.2 Multijet in Alfa Giulia and Stelvio.
What i know about these injectors:
Bosch 0445110674 (or 0445110673 or 55260836)
2000 bar CR injector
Spray angle: unknown
Connector: M14 (injectors like 243/299/308/327/341 have M12)
I talked with some friends who work at Bosch, but nobody have informations about the spray angle.
Alex Performance shared an spray angle, but i dont belive it.
I have destroyed one 674 injectors and remove the nozzle. This is why i know the partnumber.
With this nozzle i did some spray pattern test. For me, it looks like the same spray pattern as a 299/308/327. Here some pictures....
Drawing, how is the angle of the spray lines in the front view, to compare it with my pictures:
Animated GIF with booth injectors (red is 327s):
Angle measured from pictures (not exactly):
So, the spray pattern is one part. Now i have to solve some other problems.
Fits the injector in the injector seat without adapting the hole? Here the dimensions of the injectors:
Have anybody here a cylinder head an can measure the holes?
And attention: stock is a 2mm washer. With this injectors we need a 3mm washer (nozzle is 1mm longer)!!!
Next part: fuel rail, rail lines and return line.
The fuel rail from Giulia/Stelvio is a bad choice. This rail have an pressure sensor and a DRV/MRPOP and a fuel return line. In our engines, we cant use the DRV/MPROP and the return line.
My idea: use a fuel rail from 170hp JTDm (but i dont know the threads) and the rail lines from the Giulia/Stelvio rail - all theoretically!
And the return line (injector blackflow) can used from Giulia/Stelvio.
This looks like not an easy job, but it seems possible.
Whats the benefit? TribesMan compare these injectors with 243 and 341. They are 20% over the 341 injectors and can run higher railpressure (up to 2200 bar).
If someone have more informations or ideas => bringt it on!