bosio nozzles for AAZ injectors - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• bosio nozzles for AAZ injectors by ilikevwdiesel on 31 Mar, 2011 19:44
• kerma tdi lists nozzles for canadian AAZ engines, no. 308. I called the guy and he doesn't know if they fit the two stage injectors. Does anyone know wether or not they do or another source for new AAZ injector nozzles? Giles sez bosch doesn't offer them so he doesn't either 
• #1 by Vincent Waldon on 31 Mar, 2011 19:54
• Can you link to the nozzles they are talking about... I can't find 'em on their site.??
  
  Here's another option for new nozzles that will fit the AAZ injector bodies:
  
  http://www.veg-injection-service.com/store/index.php?main_page=product_info&products_id=18
  
  You'll want 'em properly calibrated... and it's a job beyond the standard home-made pop-tester.  Giles can do it if you can't find anyone closer.
• #2 by ilikevwdiesel on 31 Mar, 2011 19:58
• http://www.kermatdi.com/servlet/-strse-21/Bosio-VW-GTD-Nozzles/Detail
  
  those nozzles.
  
  the veg gtd nozzles fit the dual stage injectors huh?
• #3 by Vincent Waldon on 31 Mar, 2011 20:01
• As far as I can tell those are the same nozzles (so-called "GTD" or "308s")... just a different price.  
  
  And yup, the KCA-style nozzles are all the same dimensionally... GM/Mercedes/VW.
• #4 by ilikevwdiesel on 31 Mar, 2011 20:04
• I'm just weirded out by the AAZ injector thing cause I have an AAZ here from a passat and it has the regular single stage injectors but the jetta engine in my caddy has the dual stage. anyone ever actually swap the nozzles from one style to the other?
• #5 by Vincent Waldon on 31 Mar, 2011 20:05
• Yup...I have.  The dual stage injector bodies are slightly taller to accommodate the extra shims and springs but at the bottom where the nozzle installs they are the same and will handle any IDI KCA-style nozzle you want to install.
• #6 by ilikevwdiesel on 31 Mar, 2011 20:12
• ok well that's interesting. I wonder why giles won't put nozzles in from the other injectors? Monark is another brand I wonder what they have to say about this topic...
• #7 by neimis on 01 Apr, 2011 00:23
• Just a tip - keep in mind that if you are replacing your single stage injectors with the two stage ones, you will need different hard fuel lines because of the extra height of the two stage injectors. Also, if you are installing them yourself, first make sure that you can find a socket that will be deep enough to work on them - this can be difficult to do! They need a deeper socket than single stage injectors.
  
  As a side note, I replaced my single stage injectors a couple of years ago with two stage ones (I had Giles install and balance some new "GTD" nozzles in the two stage bodies). To be honest, I really didn't notice much or any difference.
• #8 by zagarus on 01 Apr, 2011 01:25
• i just got a set of those 308 nozzles and sent them to giles with my aaz injectors. no issues.
• #9 by Powered by Spearco on 01 Apr, 2011 01:32
• I was told by Giles that the dual spring injector need different delivery valves and that they need to be calabrated too for the AAZ ones.
• #10 by blackbird82 on 15 Apr, 2011 14:05
• Is that true?
  Hmm I got a 94 Jetta, and its an AAZ that orignially had single spring injectors
  i swapped to dual sping, same lines! haha
  it fit!
  
  But I have been thrinking about getting the pump done
  I have another AAZ motor, complete.
  It has a pump and dual spring injectors from day one
  never heard it run.
  been thinkin about tearin it down.
  
  can a  AAZ pump that ran single's be made to run dual springs easily?
  I looked under the bosch parts books for VE pumps and the camplate is the same listed for all AAZ's