I have chosen the monark nozzles. Mostly because they are German manufactured. Not that i am not impressed by the comments from others about bosio nozzles and their performance gains. I will not deny that bosio is a quality product, I am not willing to pay more when i do not have to. I did a lot of research before making my decision and do not make decisions litely.
I appreciate all of C Sean Watts input as it was very helpful in solidifying my decision.
I think that any new set of nozzles will be an improvement over a set with 200kms on the clock. I also expect to see an improvement in acceleration since these nozzles have had several updates since inception.
I think CSW has a lot of valuable information regarding this product and that should anyone else request info on these nozzles, he is the man to ask. I only wish i had gotten your email earlier CSW as i had ordered a set three hours prior to recieving your email.
I will follow up on these nozzles later.

Lastly, i will say that one of the influencing factors about these nozzles is that they are german made, and italian made in india(as i have heard about the bosio fratelli).
However, this is one persons opinion.

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airedale2 Welcome to Texas
1984 MB 300D 266,000
1993 Nissan PU 271,000
2002 Tahoe 122,000
2004 VW TDI 75,000

Got my new nozzles(monark) in 2 days ago, and put them in yesterday. Wow. My car was a slug off the line with 267,000 miles. Not any more. Gets up and goes very quickly with very little throttle. Again, very quick off the line. The one thing i did not realize, is how small the nozzles actually are. Very quiet and very smooth. No smoke on acceleration that i can see. Car runs much quieter on the freeway and much,much smoother. Probably using half as much throttle to do the same. Also noticed transmission shifts much smoother than before also. Nozzles were packaged individually in a sealed hard plastic container with a lid and prelubricated. Immaculate machining. Glass finish on the nozzles. 125$ for a set of 5. One thing I noticed is that i a few different nozzles. Not to say that they are not set at the same pop pressures. Pintle tip is smaller than the head of a needle.
Would highly recommend these nozzles to any considering new nozzles.
Drive diesels from cats, detroits, and powerjokes.
Very noticeable improvement.
Best of all, $125 for a set.

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airedale2 Welcome to Texas
1984 MB 300D 266,000
1993 Nissan PU 271,000
2002 Tahoe 122,000
2004 VW TDI 75,000

Can you suggest a source?

Where did you buy them from and what country were they made in?
Also many thanks for giving us a conclusion. Many people get there answers from this forum and we never hear from them again!!!

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84 300D, 82 Volvo 244Gl Diesel

I would like to know of some other sources of Monark injector nozzles!!!

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84 300D, 82 Volvo 244Gl Diesel

Hessianimports@bellsouth.net

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

They're here...nozzles, shims, springs, heat shields, a few new injectors and some nozzles and heat shields for VW 1.6L, also.

Held up in customs for two weeks.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

What ever brand anyone decides on ...

This is from Monark Diesel's technical department. (I think I translated it all correctly)

TESTING AND ADJUSTING
Nozzle needle and body are lap fitted to each other and should never be mismatched.
Testing should be carried out with clean diesel fuel oil or test oil meeting ISO 4113.
NEVER USE GASOLINE FOR TESTING! EXPLOSION OR FIRE COULD RESULT.
Keep hands away from nozzle spray. It can penetrate deep into the skin and and destroy the tissues. Fuel oil in the blood stream can cause blood poisoning.

Clean all nozzles.
Remove special conservation oil completely from new nozzles by washing them in clean gasoline.
Clean used nozzles of soot and carbon and likewise wash in gasoline. Allow them to dry then dip nozzles in clean fuel oil and insert them into injector body.

Testing.
When assembling, hand center and tighten before tightening with a wrench. Cap nut torques: 'P' nozzle 30-50Nm, 'S' nozzle 50-90Nm, 'T' nozzle 80-100Nm (verify for your specific application)
Verify nozzle is not jammed by connecting to the tester with the gauge stopcock OFF.
Operate the pump lever several times, forcefully about 6-8 pumps per second. If the needle is not jammed, the nozzle should chatter with a shrill whistle. If not, loosen the cap nut, rotate the nozzle and tighten. NOTE: hole type nozzles (IE: SD 240) will not chatter like pintle type nozzles even when the lever is pumped quickly.

Opening (pop) pressure.
Pressure is specific to your engine. Adjust it accordingly. It is sometimes stamped on the injector body.
CAUTION: WHEN PRESSURE GAUGE IS BEING USED increase and decrease pressure slowly or gauge damage may result. Slowly increase the pressure until slight chattering, read indicated pressure. Turn adjusting screw or change shims as necessary. When the lever is operated slowly (1-2 pumps per second) all nozzles should spray/chatter. However, the spray need not be even or well atomized.

Leakage test.
Operate lever until gauge indicates 20 bar (285 psi) below specified pressure. The nozzle does not leak if no drop of fuel falls from the nozzle in 10 seconds.

Chatter and spray pattern.
Close the gauge stopcock. Spray pattern is observed when the lever is pumped rapidly (4-6 per second.)
The pattern for pintle and throttle nozzles should be even and well atomized. For hole type nozzles, full and finely atomized.

Cleanliness is essential when testing. The test area should be free of dust and dirt. Only use clean diesel fuel or test oil.
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

While I can't speak to the quality of Bosio Nozzles, I can speak to the quality of Monark nozzles. I just installed the DNOSD261 equivalent nozzles and WOW, what a difference in running quality!!! Seems like more power off the line, and quicker throttle response. Definitely idles more quietly. Has more of a diesel sound to it when accelerating - which I like. They were on sale at ************** for $99 (set of 5).

Having installed this nozzle version, I would not go back to the original DNOSD240/ Bosch nozzle.

go to mercedes source dot com

That name goes over as well as the proverbial 'dung in a punchbowl' on this forum. Quite a few of us (myself included) have been victims of their 'over promise and under deliver' business model. (Used Asian made parts sold as "New OEM", pay to join the 'special club' to read free available instructions Kent gets from this forum and others, etc.)

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

Ouch! Sticking on the topic here, can assure you the Monark nozzles I got from said source are definitely not Asian, and I paid a reasonable price for them, no extra instructions required, got them as promised, put them in and totally happy with their performance ever since.

Bosch are the ones I took out. Probably were the original with the car 180K miles on them. Had 1 low popper, and 2 pissers, 3 were OK still.
Never tried Bosnia's, so I can't comment on them.

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Cheers!
Scott McPhee

1987 300D

They sell lots of other parts. I'm fairly certain Mercedes never made anything with "Taiwan" and nothing else embossed on it. Monark are definitely premium but they shouldn't sell for more than $20.00.

Bosio are from Italy and they're actually very good also but sell for more than that.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

MS sells a Glow Plug Reamer that is made by drilling out a Glow Plug and mounting the Reamer Bit in it. It comes with instructions and a skinny Bottle type Brush. Cost $38.95, shipping is free. (This is not an endorsement.)
El Paso Tool sells their Factory made one for a total cost with the shipping for $39.20. No instructions or Bottle type Brush. (Still no endosement.)

My opinion is thatgiven construction of their Glow Plug Reamer they could sell it for less and still make money.

So depending on your view of it you could say MS shows good business sense or you could say they over value their product.

MS clever because by supplying instructions they are able th charge more.
Adding the Bottle Type Brush is mostly a gimmick.

As an educated consumer I understand what is going on.

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84 300D, 82 Volvo 244Gl Diesel

and not to rain on your parade but I sell them for $19.70 each.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!