GM 6.5l/6.2l diesel nozzles - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• GM 6.5l/6.2l diesel nozzles by hamradio on 25 Apr, 2009 16:14
• So,
  
  This has been briefly discussed here.  It sounds like they are a good upgrade; very similar spray pattern to the vw ones from what I've read, and more flow.  And very cheap.
  
  
  While doing some ebay searching for cheaper nozzles (cheapest I can find them is $13 at rockauto), I found these, the 'marine' nozzles.  Apparently 40 hp or something in the gm diesel.  Would they flow too much for the little 1.6?  If I could get a set for $40, I think I'd do it.
  
  http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2&item=230319399567&category=33554&viewitem=#ht_841wt_1134
  
  
  
  Additionally, what is the flow difference between the turbo and non turbo bosch nozzles?  Any?  What about between 6.2l and 6.5l?
  
  
  
  Devan
• #1 by hamradio on 25 Apr, 2009 18:29
• Also, if I go with a 1.9l diesel, can I still use the 1.6 injectors with bigger nozzles?
• #2 by Smokey Eddy on 25 Apr, 2009 22:13
• both 1.9 and 1.6 injectors are the same thread pitch and diameter but the  (and the heads are the same in that respect) but the 1.9 injectors are longer.
  
  If you use a 1.6 pump with 1.6 lines and mounting bracket you can use a 1.9 head
  
  likewise if you use a 1.9 pump/lines and mounting bracket they will match up with 1.9 injectors on a 1.6 head.
  
  someone can just post "yes" if i'm correct about this.
  
  i have an AAZ head with 1.6  injectors/pump and so on which is why i say this.
• #3 by Smokey Eddy on 25 Apr, 2009 22:14
• it may just be the lines that have to match up with what injectors you're using.
• #4 by RabbitJockey on 26 Apr, 2009 12:39
• just the lines have to match.  i believe the early 1.9 injectors were the same height as the 1.6 too.  i don't see why anyone needs to upgrade their injectors, dave made 195 whp on 1.6 injectors and lost 10hp with mercedes nozzles.
• #5 by Vincent Waldon on 26 Apr, 2009 13:00
• Quote from: "Trev0rbr"

  dave made 195 whp on 1.6 injectors and lost 10hp with mercedes nozzles.

  
  
  Ding ding ding ding ding !!!   :wink:
• #6 by 53 willys on 26 Apr, 2009 13:23
• Quote from: "Trev0rbr"

  just the lines have to match.  i believe the early 1.9 injectors were the same height as the 1.6 too.  i don't see why anyone needs to upgrade their injectors, dave made 195 whp on 1.6 injectors and lost 10hp with mercedes nozzles.

  
  X3
  yeah I wanna sell my merc tips and get some GTD tips....the stock or GTD tips seem to make more then enough power while still being true VW pattern...some time the way the patterns sprays is more important then the amount of fuel injected...
  
  so if anybody want some complete merc injectors PM me..
• #7 by zukgod1 on 26 Apr, 2009 13:46
• I've posted this before but cant find it. Below is listed a couple different tips. the 6.2/6.5 tips flow the same as the OE vw tips so why waste your money?
  
  mm3/1000st
  76_______________6.2/6.5 Nozzle  dnosd248
  76_______________VW 1.6 Nozzle  dnosd293
  80_______________Case Nozzle     dn4sd42
• #8 by hamradio on 26 Apr, 2009 20:12
• Thanks a ton for all of the info!
  
  
  I think I've been convinced to go with the 1.6 nozzles.
  
  
  
  Just curious...I'm planning on dropping a 1.9l in the car in the next year or so...will the 1.6 nozzles work fine?
  
  
  Devan
• #9 by 53 willys on 27 Apr, 2009 07:22
• DNO SD274 is my next nozzle.....
• #10 by jtanguay on 27 Apr, 2009 07:43
• what about the vw 2.4 5 cyl nozzles?  they should have the right spray pattern and possibly flow slightly more fuel than 1.9's.
  
  but GTD's are definitely good.  my butt dyno did feel a difference when i had them installed.  try to get the genuine bosch ones though or they won't last too long... (the chinese ones aren't as robust and start to smoke, and give low power much earlier)
• #11 by RabbitJockey on 27 Apr, 2009 09:41
• Quote from: "jtanguay"

  what about the vw 2.4 5 cyl nozzles?  they should have the right spray pattern and possibly flow slightly more fuel than 1.9's.
  
  but GTD's are definitely good.  my butt dyno did feel a difference when i had them installed.  try to get the genuine bosch ones though or they won't last too long... (the chinese ones aren't as robust and start to smoke, and give low power much earlier)

  
  
  i would think they're the same nozzle.  did you replace worn injectors with the gtd ones?  just curious