Really old. Race nozzles are discontinued but are possible to order when having bigger quantity.
I think there is some group order going on on tdiclub.com. I actually have one spare set available on AFB bodies.
Well actually you are increasing pilot opening pressure with the pressure pin and thats all that counts actually. Increasing pilot pressure increases also main pressure too. I've seen cars working fine with stock 230-240bar opening pressure and some are running bad idle like i did with the same...
I think blackwagon should delete his post with such big time misinformation.
P970 nozzles are good option for smaller power increase. There is actually cummins nozzles same sized with slightly narrower spray pattern.
Never tested one since those are way too small, but should work even better.
You car does not need cold start parameters for warm start. So less fuel is injected and there fore fuel pressure ramp is more late than with cold start.
You need to adjust your pump timing to more advance. Open the three bolts from driver side cam wheel and turn the wheel clockwise few degrees. If you have vcds you can see timing on channel 004 -> basic settings -> late timing should be ~2 ATDC (My personal recommend is to adjust to 0 ATDC) with...
Well usually bs has no truth behind it. There are other set nozzles here too that are not in category perfect but in "good enough", they run fine on the car. It's just confusing when you say your nozzles have better quality than Robert Bosch ones and when put them to the bench they really ain't...
Well higher pop up pressure is only way to control idle iq. My car is not running idle even with cummins stock nozzles with 245bar. I'll try in some time 260-270bar.
Higher pop up pressure reduces overfueling on low revs and less smoke. Worth of testing and maybe your shutdown problems will be over too. I had same kind of problem few years ago that engine shut down when accelerating. There was something with the pump, everything was replaced with ake...
It is possible to use 683 nozzles on newer (akn/ake/bdg) injector bodies with some adapter or what so ever they use.
Wonder how high pop up pressure i need for the doctorec nozzles. My current ones are 8x0.16 970 from cummins and 240bar isn't enough, with 245-248 they run a bit better, but not...
Idle shudder usually appears when IQ is too small, like I have. I have currently cummins 970 nozzles @ 240bar and rough idle is present. Just gets too much fuel on idle...Iq is @ 3.5 and ecu asks -5mg/str correction, so it cuts fuel. I need to get higher opening pressure to reduce low revs...
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