Bosio nozzle longevity question? - Page 3 - PeachParts Mercedes-Benz Forum

Alastair · #31 05-01-2007, 04:28 PM

Quote:

Originally Posted by pdrayton

italian made Bosch nozzles are available from Merlindiesel.com in the UK for about $15 each, plus shipping.

EDIT: The Bosio supplier said the injector seemed gummed up, so it was my fuel. I'm not sure I agree. I'm sure all VWO mercs don't have gummed up injectors. If they did, surely we'd know about it? I use injector cleaner in each tank full.

SO now I'm not sure what to do - get Italian Bosch's or use the Bosio's in my wife's 92 300D (which I might convert to run 50% WVO single tank.)

Alastair / H.C.II- any comment on the quality of the Italian Bosch nozzles from Merlin Diesel? Did you know they were Italian?

All the nozzles Ive had recently from Merlin-Diesel have been made by DELPHI (Lucas/CAV) and made in France--These I have found to be excellent...

Ive not seen any Bosch Italia nozzles -Ever- so cant comment...

A friend has had issues with Bosch India nozzles, of the DLLA type used in Direct-Injection engines but these are totally different to the M.B DNOSD types.

With regards to the Bosio nozzle...I havent seen any yet over here in the U.K. However regarding the 'pre-injection' central hole...
This was only on the nozzle type DNOSD240/A

What is Important with Diesel-Nozzles is the Part-Number....

They are ALL completely different and will seriously affect performance if the wrong Number is used....

What Number Bosio Nozzles are you guys using in your M.B's....? --Maybe the Bosio Supplier is a Boso and giving you all the wrong type-number...

The Earlier DNOSD220 for the OM-615 and early 616 was of a solid pintle construction without side-cut.--Prone to be 'noisy' according to what Ive found out
Some early OM's used the DNOSD1510 apparently, Another 'Noisy' and probably well obsolete nozzle-Italian VM engines used these and are not known for quiet operation!

The Later OM-616 and 617 N/A Car applications used the DNOSD240/A (With central pintle-hole) Manuals recommend retrofitting the '240 in earlier OM engines if 'Diesel-Knock' is objectionable Good nozzle on veggy-oil

The OM601/2 series had the DNOSD261 With side-cut pintle..

'261 were also used in the OM-617, where its fitted to the 4X4 'G' Wagen.--These work well, Very quiet and clean with veggy-oil. Slight increase in low-end torque Ive found. Set at 115 Bar for N/A engines.

Never seen a DNOSD265 fitted to an M.B.---Thats an old VW 1600 Golf/Rabbit Nozzle according to my data!--But who knows what they used in overseas applications....

pdrayton · #32 05-01-2007, 06:39 PM

Thanks for the info Alastair. Yes, I believe you are correct - the 261 was in the 602 - I don't know where I got 265 from. I'll have to look what I have at home from BOsio for my 602.

I have never seen a 240/A - that I know of. Does it say 240/A on the side?

So what you're saying, bottom line, is that my 240D (on WVO) should use the 261 and so should my 602?

Thanks.

pdrayton · #33 05-01-2007, 08:15 PM

I checked the nozzles from Bosio for my 602. They are labeled:

BN0SD265 Bosch equivalent 0 434 250 200. Is that what they are supposed to be? (notice it's BN not DN)

Quinn8it · #34 05-01-2007, 08:36 PM

Quote:

Originally Posted by Cephallus

what seems to be working very well for me so far is a coolant heat exchanger just before the clear filter, an electric fuel filter heater that only runs for the first couple of minutes after startup (basically until the coolant heat exchanger is working), and injector line heaters. i don't have a way to measure the vegoil temp at the injectors, but the little heat exchanger before the filter (arctic fox 'trendsetter') is heating the oil to close to 140F with ambient temp of 85F. the biggest difference, by far, has been upgrading the glow system with the duratherm system. smokeless starts, and smooth idle when cold.

CEPHALLUS.... I installed an inline heater probe in the fuel line, after my Lovecraft conversion, before the fuel went through my Vegetherm and then into the IP. The plan was after the LC heater got up to 150f I could kill the Vegetherm/Injection line heaters, save the battery... I never got above 110F. Now Im on to Biodiesel ...

PM me if you want a good deal on the gauge and the inline probe setup(aka Little Angel??) injector heaters and vegetherm available also.

Alastair · #35 05-03-2007, 08:02 AM

Check out this link...

http://216.239.59.104/search?q=cache:d5oxWeb13hMJ:www.mabi.pl/koncowki_wtrysk.htm+bosch+0+434+250+200&hl=en&ct=clnk&cd=7&gl=uk

This lists some Bosch Stock-Numbers, with the Nozzle type Number to which they refer.

Unfortunately, It doesnt include the 0 434 250 200 part number.

For the 265, it lists 0 434 250 128

The 261, is 0 434 250 120

the 240 is, 0 434 250 110

the 220 is, 0 434 250 072

Not sure what the 0 434 250 200 actually is, Maybe its right but I doubt it There are few 'Direct-Equivalents' in the Same-Make--What would be the point!....

(Sounds like Bosio are making a single type of nozzle, that will 'suit' a couple of applications in an OK ish fashon, but Not an Exact replacement for any that they say they are the 'Equivalents' of....)

The DN0SD240 has this etched into the surface of the nozzle (Not the Injector Holder or body-Only on the Nozzle inside... just like any other. Some later ones have a Suffix 'A' and are direct-equivalents...

The Pre-Fix 'B' instead of 'D' usually referrs to the Maker. Guess Bosio use 'B'...

Lucas/CAV can and do use a variety of pre-fixes such as RDN BDN etc...

pdrayton · #36 05-03-2007, 09:43 AM

Thanks for that.

I ended up ordering 265s for my 602 (W124) and 261s for the 240D (OM616). Let's hope they do well, I think they will.

pdrayton · #37 07-01-2007, 07:31 PM

Aaaah well, the long and the short of it is that the injectorparts guy on ebay or the USPS stiffed me. I sent him $180 for 9 nozzles and I got nothing. And paypal won't refund me because the USPS website says the nozzles were delivered. But I didn't get the package (not the first time, thanks USPS, you suck). It's probably the USPS that screwed up, and the injector parts guy for not putting any insurance on it. Geez.

So that's my pissy update.......

dieselnut14 · #38 05-11-2008, 08:54 AM

I to installed 5 bosios on my 84 300d, it never sounded right and I always had a cold start issue. Before I took the car to Denver last year in October. I decided to take the bosios out to have a look. The one that was in the #1 cyl had the tip broken off. Luckily I saved my french bosch nozzels , I cleaned them up and installed them and the engine ran fine with no cold start up issues
I emailed DG and was told it must have been something in the chamber to brake off the tip and he would not warranty it. Does anybody want to buy the remainder 4 nozzels cheap plus shipping?

Thanks
Peter

C Sean Watts · #39 05-11-2008, 11:40 AM

other than what I've heard from others. But, I do know Monark brand (made in Germany since 1951) have a 12 month unlimited mileage warranty against defects.

Stevo · #40 05-11-2008, 12:38 PM

Quote:

Originally Posted by C Sean Watts

other than what I've heard from others. But, I do know Monark brand (made in Germany since 1951) have a 12 month unlimited mileage warranty against defects.

I am very happy with the Monarks you sold me. Only have a couple K on them so far but the car still runs great with smooth start ups and even seems too have more ZIP

. I will be ordering more.

johninva · #41 05-11-2008, 05:03 PM

put in 5 bosios at 198,000 miles, much more pep off the line, engine sounds good, no great. Have about 6k on them

Alastair · #42 05-11-2008, 06:06 PM

A while ago, I ordered some nozzles for my then 'new' 190D 2.5...

For some reason,--Wasnt thinking straight that day!-- I used a Co. called 'Help-Today'--a pretty good reputable Co who deal with loads of makers of parts...

I recieved 5 indian made Bosch DNOSD261, at a cost of 8.50 each (Sterling)....

I found that one had problems when first run, severe nailing/smoke etc...

I removed it, cleaned Well, and re-fitted...

No problems since, Now done around 6 odd K miles, great starting, no nailing, great power (For a N/A 190D)!....

It would appear that Maybe the post-production cleaning etc, wasnt perfect for some batches of Indian nozzles, leading to issues...

Erlend · #43 05-12-2008, 02:53 PM

I replaced my Bosch nozzles (probably had 198k) with Bosio from Diesel Giant 11k ago. Ran better, had more power initially and still seems about the same. MPG has varied downward over the winter but is back up now. 27.5 to 28.7 right now.

Diesel911 · #44 05-12-2008, 05:11 PM

Quote:

Originally Posted by Bio240D

Hi all,
Regarding the turbo 240D. The engine is a 616 four cylinder with a Garret/ Air Research T3 turbo added. No the fuel system is Not stock! It will smoke with only 5 pounds of boost at full throttle, but at 8 to 9 pounds it runs clean
( and makes more power!

). I also run 3.07 gears and the large oil cooler from a 300TD which makes for a much happier engine at 75 MPH.

I realize that the Stock pop pressure for a 616 is 115 bar, but all of the turbos use 135 bar. The injectors I built are 135 bar turbo injectors. I did not shim the 115 bar injectors to 135 bar. I don't think you could. The 135 bar injectors use a much heavier spring and the piece that pushes on the back of the pintle is different too. Anyway, she runs like a scalded cat, which in 240D parlance means I can out drag a Yugo! I also don't have to get out and push on steep hills

.

I don't know why the Bosio Nozzles went to poo so fast. What I can say is that they did, and ALL of them did. I tested all four, and the spray pattern was lousy on all four. The other thing is that the design is obsolete. The pilot injection hole on the Bosch nozzles has been universal in MB engines since what, the early 70s? If the Bosio Nozzles are so wonderful why don't they at least match stock Bosch nozzles in technical sophistication? I'm really tempted to fire up the lathe and try making my own!

Cheers, Chris

Bosio makes nozzles for non-turbo and turboed Mercedes. Were the Bosio nozzles you bought for a turbocharged engine or for a standard 240D?
Within the last 2 months I rebuilt my injectors with Monark Spray Nozzles. The Monarks also lack that hole drilled through the center of the pintel for the idle pre-injection but deal with it by grinding a flat spot up higher on the pintal.

The origional injectors from may car and a set I pulled from 82 300SD both have the above drilled pintles for that pre-injection at idle. On both those holes were completely plugged with carbon. All but one of the injectors in the SD set appered to pop test OK. Until you took a close look and found that the holes in the pintle were plugged. Even though they pop tested apprently OK they could not have been running correctly.
My point is that I do not know the cause of the problem with your Bosio nozzles but the solid pintel nozzles should be more reliable than the drilled pintle nozzles as there is nothing to easily plug up. Most Spary Nozzles on other engines with precombustion chambers or swirl chamber have Spray Nozzles with have nozzles with solid pintles (my Volvo and a bunch of VW Diesel Rabbits are a few) and they work.

RAYMOND485 · #45 08-09-2008, 08:10 PM

1984 300d turbo 147k
do a diesel purge and check the prefilter for fungus is black and will plug the nozzles, remove fuel tank to radiator shop for cleaning no more fungus in prefilter, 5 new monark nozzles from
**************.com 5 ea $100.00