That pretty much says it all- I didn't think so, but a post I read here suggests that the turbo 300TD ('83) engines take different injectors than non-turbo.

Did I put the wrong injectors in my non-turbo '83 300TD?

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Yes there is a difference.

The Non-Turbo Engines have an Opening/Pop Pressure set at 115 bar (14.5 psi/ 1 bar x bar= pressure in PSI, or about 1688 psi) psi and the Turbo Injectors have an Opening/Pop Pressure set at 135 bar (about 1958 psi).

This bar number is stamped on the Injector Body.

The higher Opening Pressure on the Turbo Injectors is needed to inject through (penetrate)the denser Air in the Cylinder/Pre-combustion Chamber when the Turbo is working.

The non-turbo Injectors can be changed into Turbo Injectors by increaseing the Injector Spring Shim/Spacer to put more tension on the Spring and increase the Opening Pressure.

However you need a Nozzle/Pop Tester to see what that pressure is.

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84 300D, 82 Volvo 244Gl Diesel

I thought the US 83 Station Wagons (TD indicting wagon) had Engines with a Turbocharger?
Is this a Station Wagon that is in Europe or came from Europe?

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84 300D, 82 Volvo 244Gl Diesel

Yep, imported from Germany to Maine, where I bought it before the roads rusted it to death. It's the only manual transmission I've seen in a 300TD.

And thanks for the info on the injectors- I think I may have the wrong ones. Crap.

Any idea what effect the higher pop pressure would have in a non-turbo engine?

Seems to run OK so far, with the possible exception that gas mileage might be suffering (but to early to determine that).

At idle speed there should be little difference.

But, at higher speed in theory when the fuel Injects it should spray into the Pre-combustion Chamber further. This means that the Ball Pin that the Injected Fuel is directed at may well get stressed.

The reason for the increase penetration is that the non-turboed Engine is not compressing as much air at higher rpms and the Air Density is lower. Meaning the Air is not as thick as in a Turbo Engine when the Turbo is functioning. This means that the Fuel will be being Injected against thinner Air at higher rpms.

The higher Opening/Pop Pressure is also supposed to make the timing slightly delayed as it take slightly longer for the greater pressure to build up. (I had not read of this until I joined this forum.)

I have not read any example of what happens when using Injectors to high of an opening pressure.

If you decide to experiment and leave the Injectors in your Engine I would plan in a year or sooner to pull 1 or 2 Injectors and inspect the Ball Pins and see if they are getting burned up.

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84 300D, 82 Volvo 244Gl Diesel

Yes, as stated above the turbo and NA injectors have different pop pressures.

Having injectors with higher than spec pop pressures will retard the injection timing. I'm not sure how much it will affect the engine idle and performance. I will change things at least slightly.

The veg oil guys often set their injectors to a higher pop pressure to get a better spray pattern when running VO, and to help timing with the slower slower burning fuel.

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Well that's good to know- 'cause I've got it converted to run on veg! Maybe I won't change them out after all....

Thnaks for all the good info, guys.

it won't help burn all the junk in the "fuel" that kills the engines.

I am not a WVO or SVO supporter but one of the Members claimed he had a gross savings of $4,000 by not haveing to buy fuel. This did not subtract any laobor or cost of the little bit of equipment and filters needed to run WVO or i gess the Origional outlay of the tank system in the Car (he did not say if he bought the car with his set-up alreaady there).

So what you have is the reason why someone bought a Mercedes Diesel. Some people buy Mercedes Diesels with the sole idea that they want to convert it to us an alternate fuel (due to the stronger fuel system compared to something like a VW Rabbit or GM Diesesl). Because they want to save the cost of fuel.
So the car is valued more for the ability to handle the alternate fuel than the fact that it is a Mercedes.

It is just a tool to be used up to save money.

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84 300D, 82 Volvo 244Gl Diesel

All true.

I love my cars, but not because they're Mercedes. I love them because they allow me to come much closer to CO2 neutral than I could with any other rig, and I love them because they are some of the last great cars that weren't built to fall apart after 5 years like nearly every other modern POS.

And all that with fuel savings that probably average several thousand dollars/year. The jury is still out for me about what veggie oil does to the engines of old diesels, but two things are very clear to me now:

A) if you centrifuge your veg oil, it contains as little "crap" as dino-diesel from Chevron, and

B) even if veg oil does eventually kill an old diesel, my old Mercedes won't die nearly soon enough that it won't pay for itself 2-3 times over in fuel savings while keeping a couple tons of CO2 out of the atmosphere. There are guys who've gone well over 100K on veg now, with no noticeable decrease in performance (I'm at about 50K myself and scootin' along).

Viva la veg!