On a 96 E300 OM606, I added a turbo and manifold from a 99E300dt. I'm having the computer reprogrammed by Speedtuning. They did my previous 99E300 turbo and it was great. I installed a set of 99 E300 turbo injectors into this 96 non turbo and it sounds like a tractor, nailing/knocking. Now I know I have to deal with some other issues first, like air bubbles coming in before the pre heater/fuel thermostat.which do not help my knocking sound issue. Are the turbo injectors on this non turbo motor a bad idea? I can not think of why. They may need a rebuild/ new nozzles? Should I just reinstall the origional non turbo injectors, which most likely also need to be pop tested.

I believe the Injectors for Turbo Engines have a Higher Opening/Pop Pressure because when the Turbo is boosting they have to inject against a thicker/higher density of compressed Air.

So one would think that using the Turbo Injectors in a Non-Turbo Engine would mean that when they inject the spray is going to inject deeper into the Prechamber than the non-turbo Injecors would; due to the decreased density of the Air during compression.
If your Prechambers are set up so that the spray hits the Ball Pin directly more or the spray will hit the Ball Pin.
It might be similar on the Prechambers with angled injection but I believe it would mean more spay would be gettting deflected what ever direction it is designed to be deflected.

It has also been claimed that the Higher Opening/Pop Pressures slightly delays the timing of injection.

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84 300D, 82 Volvo 244Gl Diesel

I did not think of the effect on timing, I do understand the reasoning. I think I will re-install the non turbo ones and see.
Thanks