Injector/ Nozzle Numbers - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Injector/ Nozzle Numbers by anto on 16 Sep, 2009 06:29
• Just wondering if the numbering/ lettering system means anything on the nozzles of bosch injectors?
  eg;
  
  Peugeot 306 - DN O SD 299
  Merc 300D - DN O SD 314
  Ford Fiesta 1.8D - DN O SD 315
  
  Does the end no. indicate higher flow rates? Different spray patterns?
  What im getting at is could i take ford fiesta injectors and see any improvement on my peugeot 306 injectors due to the higher no?
  
  Thanks,
  
  Anton
• #1 by Rabbit on Roids on 16 Sep, 2009 07:22
• thats spray pattern generally.
• #2 by burn_your_money on 16 Sep, 2009 07:25
• yeah it has to do with spray pattern but there are no patterns to the numbers that I am aware of (ie higher number, more flow.
  
  The first 0 is the spray angle.
• #3 by anto on 16 Sep, 2009 07:39
• So the 3 examples above all have the same spray pattern indicated by the O.
  Or do yuo mean the first number eg; 2 in the peugeot 306 nozzle indicates spray angle?
• #4 by Mark(The Miser)UK on 16 Sep, 2009 08:03
• Quote from: anto on 16 Sep, 2009 07:39

  So the 3 examples above all have the same spray pattern indicated by the O.
  Or do yuo mean the first number eg; 2 in the peugeot 306 nozzle indicates spray angle?
  

  
  The number after the 'DN' is the spray angle. Could be 15 etc, Never seen an '0' with a spray angle of less than 15 to 20 deg , unless its squirting a solid jet, ie clogged, so it's a bit of a Bosch mystery to me.....
• #5 by smutts on 16 Sep, 2009 12:56
• Quote

  a Bosch mystery

  
  And more jealously guarded than the contents of Fort Knox methinks.
• #6 by anto on 17 Sep, 2009 07:03
• So the last 3 digits of the number means nothing to anybody at the minute?
  Bosch keep that to themselves?
• #7 by Vincent Waldon on 17 Sep, 2009 07:25
• Yes, they appear to be a Bosch series or part number with no intrinsic meaning in and of themselves.
  
  For example, they are *not* correlated to nozzle size.
• #8 by heyisforhumans on 17 Sep, 2009 16:04
• someone should hood mount their intercooler with a scoop like how subaru does it....it'd be right next to that turbo and I bet it would help
• #9 by Rabbit on Roids on 18 Sep, 2009 09:53
• i dont want to take my intercooler out to work on my engine. and if its laying over the top of my engine, its gonna be a *** to work on.
• #10 by heyisforhumans on 18 Sep, 2009 21:15
• **schooled
• #11 by Mark(The Miser)UK on 21 Sep, 2009 15:49
• This is something I've recently found out about nozzles:
  
  
  The first letter indicates where the nozzle was made, or in some cases where the design responsibility lies; eg. B = Britain (Lucas-CAV), R = France (Roto-Diesel) etc. S= Germany?
  
  D = Nozzle
   [D]N = Pintle Nozzle
  
  [DN]0 = Spray cone Angle
  
  [DN0]S = 6 mm nozzle needle diameter
  
  [DN0S]D = Delay type nozzle (with obturator) the needle restrictor
  
  [DN0SD]273 = Unique Identifier (special features)
  These include pintle profile (converging/diverging), flow lift curve details, anti-coking flats etc.  This number simply increments as a new design requirement is requested.
  
  Remember those last digits changed often as perceived design improvements were made in an effort to get quieter and more efficient burning, rendering older numbers ‘obsolete’
  
  
  Do ‘Autodata’ books contain nozzle upgrades?
  
  Sorry, added too many letters.
• #12 by anto on 22 Sep, 2009 09:37
• Nice find!
  Does it mention any letters after the "273" unique identifier bit?
  ie;
  299 - peugeot 306 injector
  299c - peugeot 406 injector
• #13 by Mark(The Miser)UK on 24 Sep, 2009 14:24
• Quote from: anto on 22 Sep, 2009 09:37

  Nice find!
  Does it mention any letters after the "273" unique identifier bit?
  ie;
  299 - peugeot 306 injector
  299c - peugeot 406 injector
  

  
  I don't specifically know the difference. I don't know the 406 .Is it the 1905cc? Does it weigh more than the 405? I believe that Bosch takes weight/application  into consideration when providing set-up.
  I think some of the upgrades are to match emmissions changes, and Bosch's attempts to reduce smoke levels on start-up. I'm using some nozzles/injectors out of a Ford of some kind and they work fine. At MOT smoke test passed @ 0.3% limit is 3.5% !
  I notice that some of the Peugeot range have different timing settings. Possibly turbo nozzles can pass more fuel at WOT if that is a factor in your choice...
  
• #14 by anto on 25 Sep, 2009 02:44
• The 406 is the same basic engine block as the 405/ 306 1905cc turbo diesel.
  The 406 has a sensor on injector 2 and a semi ecu controlling advance as far as i know. This may be to do with emmissions etc like you mention. Perhaps the injectors changed as well for emmissions?
  I had a set o 406 injectors in my 306 and i now have 306 injector tips and the car seems smokier now.
  So my conclusion was the 406 injector tips provide a better spray allowing more fuel to burn.
  Im trying to find a set to swap in to test my theory.