That's a good point about the cross-drilling, and the introduction of that nozzle design does seem to correspond with the introduction of the turbo motors. Something to remember is that some time after the cross-drilled version came out, it superseded the N/A injector design.

Dare I say this? yes, the Bosch cross reference data I have states that they both use the same replacement nozzle these days. When the turbo versions came out with their new nozzle, the N/A motors began using the same nozzle after the existing nozzle stock was depleted. The nozzles in your injectors may be the previous design without the cross-drilled hole, since these are apparently used injectors that may pre-date the added hole, and I would be concerned about attempting to use them in a turbo motor, simply because I have no data to support that they would work properly. It's possible that it doesn't matter at all, but I won't make that claim.

Since they have to come apart to adjust pop pressure, anyway, I guess you'll be finding out soon enough what the nozzle part really is. I wouldn't be too worried, yet.

*Edit: I should note that my Bosch booklet is a bit dated. It was published in the early 90's. Still, they list the engines as using the exact same replacement parts, and I haven't seen any evidence to support that this isn't still the case.

__________________
- K.C.Adams

'77 300D Euro Delivery
OM617 turbo / 4-speed swap
404 Milanbraun Metallic / 134 Dattel MB-Tex

Current status:
* Undergoing body work

My '77 300D progress thread