Greetings!

I reached out to Russel at DieselGiant who no longer sells 617 NA Injector Nozzles. Was wondering if there was a seller for the Bosio nozzles still out there?

Thanks!

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Why I will never do business with "DieselKraut" again

http://www.peachparts.com/shopforum/mercedes-benz-used-parts-sale-wanted/378935-why-i-will-never-do-business-dieselkraut-again.html

Is this still your location; London, United Kingdom? Bosios are made in Italy.

Also you did not say what engine they were for.

I think the problem is that as with Dieselgiant places that did sell them or the sites are no longer around for old notes to be any good.

This place used to sell them but mostly sold for VW's (Bosio also makes Nozzles for direct injection Injectors).
There website is still there but it would not open completely due to my dial up internet and outdated web browser.
But at the bottom of the page is as seen in the attached photo.
https://www.kermatdi.com/

I have never bought anything from them.

In the past bosio nozzles were sold on eBay.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Yes sir, still the UK and I shared that its for the 617 Normally Aspirated motor (from my 84 W123)

After I pulled the injectors from my other vehicle - a 76 240D W115 with <80K miles on it - I was surprised to see substantial cratering of the factory original nozzles as I expected that level of wear to occur well above 100K miles. (This may explain why I need to provide throttle on cold start despite good compression and no oil consumption). I shipped the injectors, new Monark nozzles and lift pump to the Grezzer aka the "Injector Guru" for a rebuild.

My next project is to pull the W123's injectors for inspection but don't want to do this till I have found the best replacement set. Grezzer aka the injector guru has shared that the Bosio nozzles slightly outperform Monark in terms of fuel flow (which are still available here in Germany somehow).

I'd like to try to get a set of the Bosios if I can!

__________________
Why I will never do business with "DieselKraut" again

http://www.peachparts.com/shopforum/mercedes-benz-used-parts-sale-wanted/378935-why-i-will-never-do-business-dieselkraut-again.html

You'd do better to order Monarchs from Germany and find someone to pop test them if you don't have the tools or experience.

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84 300SD
85 380SE
83 528e
95 318ic

UK eBay may sell the Injector Nozzles you need.
The nozzles that are used in an 1985 300D with turbo are backwards compatible with the earlier models.
The whole injector is the same except for the pop-opening pressure is different between the turbo and the NA. It is just a matter of adjusting the spring shims to get the proper pressure and balance between the other nozzles.

However, there is 2 styles of Injector bodies with which the parts are not interchangeable. If you take an Injector apart keep all of the parts for one injector separated from the rest.

If you go back far enough the Injector bodies are different. On the older ones the fuel return from the injectors is connected to a Banjo that slides over the long threaded end of the Injector and there is a Nut that follows that an screws onto the Banjo. Most frequently all of the banjos are connected to each other by metal tubing.

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84 300D, 82 Volvo 244Gl Diesel

Done this exact recommendation on my W115. I was told that Bosio's spray slightly more fuel, which is why I'd like to try them on my W123 instead of Monarchs IF I can find a seller.

__________________
Why I will never do business with "DieselKraut" again

http://www.peachparts.com/shopforum/mercedes-benz-used-parts-sale-wanted/378935-why-i-will-never-do-business-dieselkraut-again.html

Screw:
Looking at my records, I installed Bosio nozzles in my 1983 300CD on 14 August 2014 and so far have 50532 miles on them. They are well worth the money and trouble to find. The immediate difference in the way my engine ran compared to the OE Bosch was remarkable. I bought them on-line by Googling "Bosio" and had them shimmed to spec and spray tested at a local Diesel truck engine shop.

Prior to purchase, I asked the Greazzer how long they should last. His answer was "At least 100k miles." I suppose the Monarchs may also be better than the Bosch (I understand they are now made in India) but when it is time to replace, I will search again for Bosio.

If the Bosch Nozzles were the old worn out ones any new Nozzles that were the correct ones would given better performance then the old worn ones.
The fist time I rebuilt my Injectors I used some cheapie brand x ones I got on eBay and I got the same betterment in performance.

I couple years later I decided to use the Monarks.

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84 300D, 82 Volvo 244Gl Diesel

Screw the rebuild bs. Just order some rebuilt Bosch and be done with it. It’s not worth your time and you can get it wrong.

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Rindfleischetikettierungsüberwachungsaufgabenübertragungsgesetz

Really, you think you're going to get perfect rebuilds from Bosch? I just did mine myself no problems and I know they are balanced and have great spray patterns.

No I do not. The difference is you send them back if you find one that doesn’t perform.

And to do that you have to buy a pop tester to check spray patterns and release pressure. If you buy a pop tester is not very difficult to clean them, replace the nozzles and set pressure, also a lot cheaper. If you are not up for it buy new nozzles and send them to Dieselfuelinjector.guru for a rebuild. Just my opinion, there are lots of ways to get it done and going the Bosch route is just one of them.

You do not need a pop tester to verify proper operation. After replacement the nozzles will need a little break in period. The litmus test is a cold start and listening to the engine immediately after the post glow cycle has ended. If no to minimal smoking or nailing is present you can be happy with the result. It’s not absolutely critical that the pop pressure is set at exactly 135 bar in your 30 year old diesel. Chances are that the remainder of your engine has developed variances during that period anyways. If you buy at the right place you can replace injectors as often as you like do to lifetime warranties being offered.

You can get a new Nozzle that is poor right out of the box. Way in the past I bought 25 Monark Nozzles and one of them was very poor. I would not have known that without pop testing them and of course I balanced them.

No matter what part of the Engine you are working on you should be trying to keep it within the factory specs because that is were it is going to work best.
If you have other vehicles the time issue is just an inconvenience.

How to Rebuild Injectors
vincewaldon.com - HOW-TO: Rebuild Diesel IDI Injectors

Reasons to do-it-yourself is to gain knowledge and save money or have a choice what quality parts go on your vehicle. And yes sometimes you screw up and your skill levels get severely tested. But, it is the long game where you are building experience and knowledge that will be useful in the future.

Example on my Van I failed an emissions test with too much NOX and too much CO. I could replace parts but had no way to know what would work. If I took it to someplace it was going to be hundreds of dollars for testing and fixing.
I spent close to $200 for an CO analyzer. I figured that while I was still spending hundreds of dollars at the end I would have the Analyzer left over for other jobs.
Got on the internet and looked up stuff that would cause my problem and one of them was the O2 sensor ($18 for a new Bosch). I bought a new one and tested with the CO analyzer and I found out the O2 sensor fixed the issue. The defective O2 sensor was a Denso one. Won't by a Denso again.

The side story to this is I already had CO analyzer from back in the 1970's (analog meter) but I could not remember how to calibrate it and no more instructions. The new one is digital.
As it turned out the Digital one is made by a different company but it looked similar. I wrote to that company and found out the bought out the old company and they sent me instructions for the old CO Analyzer which still functions fine. Of course the analog reading is not as fine as the digital.

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84 300D, 82 Volvo 244Gl Diesel

If you like to tinker with injectors, good on you. I did too on my 84. I just don’t see the point anymore with quality Bosch injectors costing the same as Nozzles and a test rig. Got mine at FCP euro and I’ll never have to buy injectors again. I tested the Bosch and they were fine btw.