Hi,
I'm just curious here is it possible or heard of converting a 240D into common rail injection ?
with the efficiency, emissions and power advantage! and imagine that with a turbo!
anywhoo this was just a random thought I had is it actually possible to do this, are'nt the injectors operated through a solenoid valve? think of a W115 with this a 240D!!!

The common rail system is pressurized up to something like 20,000 psi, so you'd need a different injection pump, and mating that to the block and timing it would be pretty tough.

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Not to mention piezoelectric injectors and a computer to control them.....

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Bob
'82 300D Petrol B-G Metallic

also, the piston and head are significantly different on common rail motors. with Direct Injection.
just changing to CRI would not improve anything.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Yeah, power, efficiency and emissions are much more closely related to other aspects of the engine design, not just the injection system. If you did it, it'd cost a lot, probably not be reliable, difficult to work on and would probably not give you any measurably advantage.

Sorry to burst yo bubble, bro.

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition

Probably be easier to plop a CDI into a 240. Though that wouldn't be easy either.

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I don't think you'd need the piezoelectric injectors. You would need to upgrade the injectors though. Getting a sleeve or something to mate new injectors. I had thought about doing this. I hadn't thought about the pistons. It would be a major undertaking though. I would also worry about the camshaft and how that effects timing/combustion/injection events.
I do think just swapping in a newer motor would be easier. Isn't there an India company that still makes a 2.4 D motor that is updated?
Tom

Heres a similar thread :

http://www.peachparts.com/shopforum/showthread.php?t=270557

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Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

You would need the full package. Electrically (piezo) actuated injectors, pressure sensors, rail, new injection pump, computer.

If you can do it and add turbo with intercooler with standard shift, you'd have one heckofa 240D. You'd have some serious bragging rights.

I don't know if a 240D is designed for that kind of strain though.

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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)

-What converting the head to a direct injection, instead of a glow plug indirect injection engine.
-What about compression ratio, i'm sure it would be different.
-I think swapping another engine in would be far easier and reliable and cheaper in the long run.

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2011 e320 cdi (132,000) current
2005 Jeep CRD diesel--2.8L (138,000 miles) wrecked, insurance took
1993 Mercedes benz 300D 2.5 Turbo Frybrid powered. (336,000 miles) wrecked and sold as parts car
1990 Mercedes benz 300D 2.5 Turbo (170,000 miles) wrecked and sold as parts car

Check out my Frybrid Vegtable Oil Conversion at http://1990300dfrybridconversion.shutterfly.com/

swapping just the head for a DI head would leave no place for combustion to occur... with DI motors, the combustion chamber is built into the design of the piston. our IDI motors have the combustion chamber in the head... take that away and you have two flat surfaces, and noplace for combustion...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

ah...but imagine the compression...

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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

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