W210 v W124 injectors - PeachParts Mercedes-Benz Forum

spock505 · #1 04-04-2015, 02:21 PM

Hello folks,

A while back I rebuilt the injectors for my S124 with OM606 non turbo engine following rec specs. This included checking the side of the removed OEM injector for pop pressures listed at 115bar, no problem.

I followed the same procedure with my W210 turbo. Having already read a
few threads Are w124 e300 diesel injectors the same as w210? anyone got a parts book? - Mercedes-Benz Owners' Forums I

They are different im afraid. Non-turbo 606 ones are 0001510551 and the 606 turbodiesel ones are 0001510651

expected not only a different part number but also pop pressure.

It turns out they are identical including 115 bar pop pressure, as a test I changed out the ones in the 124 for 210 with no obvious difference?

Not sure what to do here, should I up it to 135bar as per other posters comments or leave as is?

Nozzles are the same but will need extra shims to up pressure.

Thank you

KarTek · #2 04-04-2015, 02:37 PM

As far as I can tell, they're mechanically identical except for the pop pressure. I have some of both and all parts seem to be interchangeable.

The 115 bar injectors will slightly advance the timing as the cam will not have to turn as far to reach the pop pressure.

spock505 · #3 04-04-2015, 02:55 PM

Thanks Kartek, how odd, much have read several posts recommending same.

I have a copy of WIS on an older machine, will wind it up tomorrow and compare both settings.

it looks as though these are original parts, couldn't remove the leak-off pipes by hand needed pliers or cut them free - big clouds of dust!

Started soaking the glows ready for a summer change, can't be too careful. I never managed to do the EGR wire fix but plesantly surprised today to see no build up of soot or gunk in the manifold, co completely spotless 60k miles/5 years mostly town driving.

RunningTooHot · #4 04-04-2015, 03:03 PM

Both the nozzle holder/body and the nozzles themselves are the same - except for the external stamping on the holder listing the pressure specification.

The pop pressure is 115 bar for the normally aspirated 606, and 135 bar for the turbo 606.

Confusion can be caused by a previously rebuilt injector that was calibrated for a different pressure than that which is stamped on the holder. This can be the case with rebuilt injectors purchased from a retailer.

I'm also a bit perplexed as to why there are a dearth of good choices for 606 nozzles.

Be careful and do your research before purchasing new nozzles. I've seen some Chinese sourced knock-offs for as low as $3 each, and I wouldn't be surprised to find out that some unscrupulous vendors sell those. People have had mixed results (said euphemistically) with new Bosch nozzles that are now made in India. Who knows, maybe the Chinese ones aren't much worse? Or maybe even better??? Anyone want to be a guinea pig to see how they are?

People have had good luck with Bozio nozzles, but it appears that the ones people use in the 606 holders are an adaptation from a different application. I've looked in the Bozio catalog, and they don't manufacture a nozzle that specifically replaces the Bosch 310 nozzle. (The actual Bosch nozzle number is DN0SD310)

Worse yet, if you do want to buy a full set of injectors from the MB dealer, they only have rebuilt ones available - with the Bosch India nozzles installed!

spock505 · #5 04-04-2015, 03:13 PM

Thanks RTH, these are the nozzles I purchased along with tester and shims. So far okay but early days.

Genuine Bosch rebuilt injectors – Poor Quality?

I'll come back on the WIS stuff tom, cheers

KarTek · #6 04-04-2015, 03:16 PM

If you're looking for new nozzles, I have a set from Tom, from Germany, a member here and they've been fantastic. Better mileage, quiet.

They're supposedly 3 angle nozzles, not sure who made them but he will have full details if you're interested.

Diesel911 · #7 04-04-2015, 09:28 PM

The pop pressure is 115 bar for the normally aspirated 606, and 135 bar for the turbo 606. I believe the reason for the higher Turbo Pop Pressure is that when the Turbo is boosting it is copressing more Air making the Air desnser and the higher Pop Pressure is needed to penatrate the Denser Air.

GregMN · #8 04-04-2015, 11:51 PM

Please excuse my ignorance on the issue, but could the different recommended pop pressures be due to differences in the IP's.

spock505 · #9 04-05-2015, 09:39 AM

Okay, taken directly from WIS.

For the OM606.910 (W124, non-turbo) 115 bar+8 for newly adjusted nozzles - minimum 110bar for used nozzle. EPC part number A000 010 05 51

For the OM606.962 (W210, turbo) 115 - 125 bar for newly adjusted nozzles - minimum 110 bar for used nozzle. EPC part number A000 010 06 51

Incidentally, the second page showing OM606.962 spec also applies to OM606.910

It looks as though the nozzle holders have different part numbers although the ones out of 210 have 05 designation, not 06?

Where are you guys sourcing the 135 bar info from, perhaps US spec?

Thanks for the offer Kartek, I'll probably stick with the Bosch nozzles for the moment. $25 not bad value plus I need the shims which are not readily available here in UK.

spock505 · #10 04-05-2015, 05:46 PM

Bit puzzled by the 0551 EPC part number but the injectors removed from 210 look to be original.

Certainly when I purchased the vehicle it had around 80k miles which is probably too soon for changing anyway. Leak-off pipes appear stock as impossible to remove by hand.

Not sure why it has the 05 and not 06 nozzle holder but runs very well with new nozzles fitted.

Did you guys have any luck with the 135 bar spec?

Poster here looks like he has access to WIS quoting the above, could anyone confirm?

E300 Turbodiesel Injectors - Mercedes-Benz Forum

KarTek · #11 04-05-2015, 08:21 PM

My car has the 135's on it from the factory. I punched them up to 140 when I rebuilt them in anticipation of running 3 bar of boost.

spock505 · #12 04-06-2015, 06:45 AM

Quote:

Originally Posted by KarTek

My car has the 135's on it from the factory. I punched them up to 140 when I rebuilt them in anticipation of running 3 bar of boost.

Are there any power or mpg benefits to higher pop pressures, perhaps leaner burn or better spray pattern?

What I can do is order a bunch of shims then test the injectors that came out of the 210 to see where there at. At the moment it has the 115 bar injectors from my S124 which I can use until the new nozzles arrive.

spock505 · #13 04-06-2015, 03:04 PM

I had a reply from another forum (thanks Kajtek1).

It looks as though both 115 and 135 bar are both correct for different states of tune. Euro cars are slightly higher output by 4hp which probably explains the two settings.

freesoul · #14 12-29-2017, 11:08 AM

I have a set of spare injectors for my OM606.910 from a car with similar mileage 275K miles. I want to rebuild them and put them in for hopefully better performance and mileage. The car runs "ok" now but has some smoke on hard acceleration and also when idling there is some pinging.

I think I am on the right track with these nozzles which are the DN0SD310.

https://www.ebay.com/itm/6-X-MONARK-INJECTOR-NOZZLE-FOR-MERCEDES-W210-S210-E300-TURBO-D-/222265391764

Am I correct in thinking all I need to do is carefully disassemble them keeping the parts for each injector separate, clean the housing and put the new nozzles in with the same shims? I know I need new heat shields when I install them in the car.

Also when cleaning the injectors should the parts be lapped using fine grit sandpaper and lubricating oil? Should the new nozzles be taken apart for cleaning or not touched?

Thanks in advance!

jay_bob · #15 12-29-2017, 03:45 PM

I (along with many others here) have used member Greazzer to rebuild injectors. Unless you have all the parts, tooling, and experience, to do this job, I would not attempt this myself.

His website http://www.dieselfuelinjector.guru/

He lives in Columbia SC a few miles from me.