190d and 240d injectors - the same? - PeachParts Mercedes-Benz Forum

Sev · #1 09-10-2009, 03:46 AM

are the 115 bar injectors from a 240d going to fit into a 190d 2.2? the only possible difference i can think of is the threading, or overall length.

jt20 · #2 09-10-2009, 04:01 AM

no

Sev · #3 09-10-2009, 04:17 AM

Quote:

Originally Posted by jt20

no

what's the difference then? c'mon, tell us. don't keep secrets

t walgamuth · #4 09-10-2009, 06:04 AM

I would imagine the tips are different as a minimum. They might actually screw in and work but probably carry different part numbers etc.

Sev · #5 09-10-2009, 01:52 PM

thanks, but i'm looking for a definitive answer if anyone knows/has tried it

frontwheel · #6 09-10-2009, 02:20 PM

you should try using the wrong parts and give us a full report. i would like to see diagrams and charts supporting your findings.

cornblatt · #7 09-10-2009, 02:27 PM

Searching the Buy Parts > Fastlane link at the top of this page gave me the same part numbers for a 1983 240D and a 1984 190D (for both the complete injector as well as just the injector nozzle).

So, the replacement parts appear to be compatible (for those specific model years), if that helps...

I've never tried this swap myself.

jt20 · #8 09-10-2009, 07:54 PM

the 603 / 602 injectors thread into the prechamber, the 617 / 616 thread into the retaining collar.

much different thread pitches and depths.

On the other hand, if you wanted to thread the 602 injectors into the prechamber of a 616, I couldn't tell you if the the body is threaded to the same depth and it would work. However the threads on each prechamber are the same.

Sev · #9 09-10-2009, 08:55 PM

Quote:

Originally Posted by jt20

the 603 / 602 injectors thread into the prechamber, the 617 / 616 thread into the retaining collar.

much different thread pitches and depths.

On the other hand, if you wanted to thread the 602 injectors into the prechamber of a 616, I couldn't tell you if the the body is threaded to the same depth and it would work. However the threads on each prechamber are the same.

ah, dang. ok, will there goes that theory.

ok, how about the w114 240d--will those injectors work on an w123 240d?

guys, try to keep the useless posts to a minimum, please--there's already waaaaaay too much junk on the internet these days
(craig: you are reading this, aren't you?)

t walgamuth · #10 09-10-2009, 10:35 PM

Quote:

Originally Posted by Sev

ah, dang. ok, will there goes that theory.

ok, how about the w114 240d--will those injectors work on an w123 240d?

guys, try to keep the useless posts to a minimum, please--there's already waaaaaay too much junk on the internet these days
(craig: you are reading this, aren't you?)

This I imagine, would be fine....same generation of engine design. The factory might actually have a different part number but I would not hesitate to interchange them because the difference would be slight.

300d na are the same as 240d but 300d turbo injectors have a different part number and are different enough I would not use them.

Sev · #11 09-10-2009, 11:37 PM

Quote:

Originally Posted by t walgamuth

This I imagine, would be fine....same generation of engine design. The factory might actually have a different part number but I would not hesitate to interchange them because the difference would be slight.

300d na are the same as 240d but 300d turbo injectors have a different part number and are different enough I would not use them.

so, just to be clear, the injectors off a 240d from the w114 chassis would be compatible with the w123 240d engine?

t walgamuth · #12 09-11-2009, 06:27 AM

Quote:

Originally Posted by Sev

so, just to be clear, the injectors off a 240d from the w114 chassis would be compatible with the w123 240d engine?

I am not advising you to do this. I believe it is probably true though. The best thing is to use the numbers on the injector as your guide and use what the factory specifies.

Billybob · #13 09-13-2009, 01:07 AM

Quote:

Originally Posted by jt20

the 603 / 602 injectors thread into the prechamber, the 617 / 616 thread into the retaining collar.

The original poster refers to a 190D 2.2 which would be a OM601 engine, this engine uses the same vertical injection design prechambers and prechamber rings as the OM615/616/617XXX and OM602.91X(without EGR) as well as OM 603.96X engines. All these engines use the pin-type prechamber rings into which the nozzle holder threads. So the nozzle holders for these engines are in fact dimensionally compatible!

The engines which use inclined injection OM602.91(as of 09/88 with EGR), OM602.961/2, and OM603.962/970. All these later engines use differently designed splined type prechambers rings and prechambers into which these nozzle holders threads into.

jt20 · #14 09-10-2009, 08:13 PM

and as Mr. Walgamuth mentioned in his useless post.

The nozzles are different (265) and may cause a slight increase in fuel consumption as they are intended to flow more fuel. but it would be mostly negligible and you could put the nozzles from the 240d into them if desired.

Sev · #15 09-10-2009, 08:56 PM

Quote:

Originally Posted by jt20

and as Mr. Walgamuth mentioned in his useless post.

The nozzles are different (265) and may cause a slight increase in fuel consumption as they are intended to flow more fuel. but it would be mostly negligible and you could put the nozzles from the 240d into them if desired.

good to know, good to know