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Nozzle availability

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Vern, Jan 30, 2020.

  1. Grey Wolf

    Grey Wolf Registered User

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    Vern, Although I don't belong to the link below a friend of mine did. He has long passed but I always took my injectors to him to be rebuilt, about 50 years worth. Anyway he always told me to find a shop through this site when I was traveling and they would take of the injectors he built. Fortunately I never had problems with his work:) Anyway good luck to you.

    https://diesel.org/
     
  2. Vern

    Vern Full Access Member

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    With what I've learned over the last week, I'd say it makes perfect sense to invest in re-working older injector nozzle assemblies before acquiring unknown new ones. I guess also part of leaning this way for me is that I've had success in bringing old nozzle assemblies back to life using a few tricks. A methodical approach with accurate work would no doubt be way more minty. I also would like to know what needs to be done to the wearing parts. Thewespaul you mentioned replaced springs. Is there machining involved? I don't know what the stage one nozzle extruding process is either and I'm interested to learn more.

    I see the date codes are stamped on a frozen nozzle assembly of mine. Are originals the only ones worth working on?
    When had you bought them? I wonder if Italy or the date are stamped on the nozzles inside. 2018 was product of Italy still. IMG_3884.JPG

    Out of curiosity and based on my experience finding return cup o-rings, I called Navistar and gave them a Navistar part number for nozzles I got online. No dice. 1813346C1 Navistar not a good number.

    770536 stamped on the nozzle nets on the web a Chen Chen diesel parts plant in Taiwan that will quote on a minimum of 50. Perhaps the practice of selling these in America would be to expect 4 decent sets out of the 50 and mark the good ones up a couple hundred percent. Dunno. I've made an inquiry. If anyone's interested they are here. http://parts123.globalimporter.net/pod2/1393/917134/nozzle.htm
     
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  3. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Thank you all for the responses, it’s given me some good things to think on. I’m thinking I’m going to use up the remainder of new assemblies and drop the prices for the reman stock replacements. Here’s an order of 40 BB codes I had done last week, they so far pop great and look better than new. 2ED29FF8-3F54-428F-8E60-BC6E590C2E5D.jpeg
     
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  4. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    There’s no stamping on the new stanadyne nozzles, the spring replacement doesn’t require any machining, but the nozzle extrusion does, it’s done via EDM machining.
     
  5. nelstomlinson

    nelstomlinson Full Access Member

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    If you can deliver the same quality for less by rebuilding old injectors, let's go that route. I don't care about new versus rebuilds, I want good stuff.

    Wes, I have eight new, Italian-made injectors, and I also have eight original injectors from a junkyard engine. Which set should I send you to be tested/balanced for use with a 90c pump? Or does it even matter? It sounds as if you have to do the same thing to them either way, right?
     
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  6. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Right now I am pretty good on cores, I’ve got a few hundred already in line for rebuilding, and I’m getting near a thousand cores as apart of the closing fuel shop I am purchasing, so my plan is to sell these on the site with no core charge, same with the pumps. Once I use up some of these cores I’ll setup a buyback program on the site for injectors and pumps
     
  7. Vern

    Vern Full Access Member

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    Thanks for the link and luck wishes, Grey Wolf.

    I started this thread because I want to rebuild my own injectors. I want to use my own experience and test equipment to save some money. I want to save the risks and costs associated with shipping injectors. I want to avoid retailers and service providers who are opaque to customers.

    Are any other fuel injection service industry providers willing to share their nozzle replacement processes?

    Are any folks on here in the business willing to sell and ship nozzles? New Stanadyne, reworked? Otherwise?
     
  8. Macrobb

    Macrobb Full Access Member

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    Good for you! I'm in the same boat.
    I'm not an expert, but I've done a few sets for my own use.
    The job is pretty simple:
    1. Grab the body in a vise.
    2. Use a socket and ratchet to loosen up the end cap.
    3. Unscrew the end cap.
    4. You'll end up with the nozzle + pintle right at the end, then a little spacer plate with a pin sticking out both sides(be CAREFUL of this) and then a spring-spacer, spring, and shims at the top.
    5. Replace the nozzle+pintle assembly, reassemble, tighten down carefully.
    6. Pop-test, figure out what sort of pressure you are at.
    7. Disassemble, measure shim pack and add or subtract some thickness. Finding a kit of shims is hard; I've got extras from other injectors at this point.
    8. Re-assemble, re-test and repeat 5-8 until you end up with around ~1800 PSI, +- 50.
    Now, repeat with the other 7.

    I also like to use ATF in my pop tester; it does a good job.

    I've managed to get one set of nozzles out of R&D way back in the day, but it wasn't a regular offering.
    I recently bought a set of chinese nozzles for ~$5/ea off alibaba, haven't had time to make injectors out of them yet. The listing I bought isn't valid, but here's the part number:
    https://www.aliexpress.com/wholesal...d=SB_20200204205747&SearchText=diesel+6801036
     
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  9. Vern

    Vern Full Access Member

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    I can have nozzle assemblies shipped from the states to my closest diesel.org listed diesel service provider for CAD75 each. Turns out it's $120 for a new injector from the same Stanadyne vendor! In 2018 for $80 I bought a new injector from a vendor in AB. Weird stuff.
     
  10. Vern

    Vern Full Access Member

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    Pretty perplexed over the variation in price and availability for the Stanadyne injectors and nozzles province-side. What are you paying State-side? Are vendors all over the map?

    Closest vendor: CAD 130 injector 3-5 day/ CAD 80 Nozzle (plus 10% FEE??, plus ridiculous shipping and re-stocking cost)

    Big local vendor: CAD 120 injector " " " "/ CAD 75 Nozzle (" " """" """"" """" """" """ """ '"" "" """ """ "" "" """)

    Western Vendor: CAD 77.18 injector on-hand/ CAD 51.08 Nozzle ("" "" " " " " " "" " " "" "" " ")

    All these are excluding any sales taxes.

    Each vendor offers the same discouraging lines about nozzles from USA, fees, and returns penalty. I imagine Stanadyne vendor on-boarding would be fun.
     
  11. Vern

    Vern Full Access Member

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    If anyone is still following this, I wanted to add what I noticed on the "new" injector when I disassembled it while I substituted it for an older injector in the hopes it would cure my engine-miss at cold start.

    It was in the interest of a balanced set I dismantled the injector to put a slightly smaller shim in place of one it shipped with. This 2018 new injector had stanadyne stamped on it. It had an older date code.

    Plus, the nozzle body was considerably marred. Metal scuffing could be seen on two sides and went 1/4 of the way around on one side in a sort of parallel fashion.

    Additionally, there was what looked like old dirt lodged in the nozzle holder.

    Didn't bother pop testing. Put it in. Sadly, not a great improvement for cyl. no. 5, even with road draft pipe installed concurrently ( I know, not good to do two things at once when sleuthing).
     
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  12. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Sounds like you’ve gotten something I’ve seen on eBay for awhile now. You got a used injector with a reground nozzle and cleaned up body packaged in a newer stanadyne box and relabeled to look new.
     
  13. Vern

    Vern Full Access Member

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    Yeah, maybe.

    Reputable vendor in Alberta. Not hard to make a u-sonic cleaned injector look new.
     
  14. 79jasper

    79jasper Chickenhawk

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    Imo, putting a smaller shim in without pop testing could be the lackluster result.

    Sent from my SM-N960U using Tapatalk
     
  15. nelstomlinson

    nelstomlinson Full Access Member

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    If you can find the janitor, or the manager of that Stanadyne factory, you can probably buy a few cases out the back door, if you can speak Mandarin. That's probably how the shady sellers here get their parts. It's the Chinese way.
     
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