STD
OM617A Setting - Printable Version

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OM617A Setting - grizzlee - 05-01-2017

Hello 

I own an old G300 GD mercedes with the old OM617 engine. Since it has no turbo and weighs over 2t, it runs very very slowly with it's 88 ps.

I was thinking about making an upgrade to an OM617A engine with a turbo because it is very easy to mount and only the intake is different. I live in Romania and these engines are very rare here, since they where used only on a few w123 and only in the american w126 300 SD.This is the reason why i need your help.

Since i want to swap the engine, i was thinking about upgrading the turbo & pump before mounting it on.
I have read a lot of threads on this engine but it is not clear which would be the best combination. 

For the pump, i think that the best solution would be the one with 7.5cc elements from dieselmekken,or? As for the turbo, i do not know what to choose in order not to modify the whole intake. Do i have to change the stock injectors when changing pump and turbo?


I do have about 2500 eur for this project and do not want to swap any internals in the engine. What max power can i expect with stock internals from this engine?

Do you know if there are any aftermarket  intercooler kits for this engine?

Ps: please excuse my english if i do mistakes. I also have a lot to learn about engines Smile

Thanks a lot
Sebastian

RE: OM617A Setting - barrote - 05-01-2017

Pm about the pump.
I belive i have a turbo set too. Original to 617A.
Maybe i can help u out with some other issues.
The injectors may be the same as N/A although the precups are diff. Upgrading to turbo ones includes cutting on the head nothing special.
But u may already have the turbo type head and engine with oil squirts.
That is something it needs. Then its about it.
Its the turbo and the pump that will make all the diff.

RE: OM617A Setting - grizzlee - 05-02-2017

Hello and thanks for the answer. If i understood you correct, does it mean that i can upgrade my engine to the turbo version? That would be great, since i have the engine serial number in the documents of the car and would not have to change the papers with the new engine serial code.

How can i see if i have the needed pistons and oil squirts? I do not know which mecanic would risk and drill the oil squirts in the engine block here in Romania.
What turbo set do you have?

Please pm me about the pump.

Thanks
Sebastian

RE: OM617A Setting - barrote - 05-02-2017

If u have a original gd300 probably it is the latest engines produced. Being in an ofroad vehicle must have oil cooling and piston cooling.
I have original turbo from 617A.
U can check the squirts by removing the pan. Or asking MB by the engine nr and chassis nr.

RE: OM617A Setting - grizzlee - 05-03-2017

Hello Barrote and thanks for your answer. Do you have any picture on how the squirts for the turbo version should look like? You mean that i should remove the lower oil pan, and i should see there the oil squirts and oil cooling nozzles, right?

I do not have hope that MB will provide me this information if i send them my engine or chasis number.
The car is an G class 300GD built in 1986 with the original engine.

Thank you

RE: OM617A Setting - barrote - 05-03-2017

Yes they have it in the system... they implemented the Epc in early 90thies when your vehicle was still under 10 years.
It is easyer to ask than remove the pan....
I' m almost sure it has , but beeing a eastern build we nwver know.

RE: OM617A Setting - Keino - 05-03-2017

They look like this:   http://www.ebay.com/itm/Mercedes-Turbo-diesel-w123-om617-300d-300cd-300td-Piston-Cooling-Oil-Nozzles-/302122895094?hash=item4657ed86f6:g:CB4AAOSw9mFWKYPe&vxp=mtr

There is one mounted at the bottom of each cylinder.
And yes you have to remove the lower oil pan (the big one with like 20 allen bolts) in order to see them

RE: OM617A Setting - NZScott - 05-03-2017

I'll eat my hat if your 617.93x has oil squirters

RE: OM617A Setting - Keino - 05-04-2017

(05-03-2017, 11:21 PM)NZScott I'll eat my hat if your 617.93x has oil squirters


@ grizzlee

Now you just gotta find out! Big Grin

(However I think NZscott is right.)

RE: OM617A Setting - Austincarnut - 05-04-2017

(05-03-2017, 02:34 AM)grizzlee Hello Barrote and thanks for your answer. Do you have any picture on how the squirts for the turbo version should look like?  You mean that i should remove the lower oil pan, and i should see there the oil squirts and oil cooling nozzles, right?  

I do not have hope that MB will provide me this information if i send them my engine or chasis number.
The car is an G class 300GD built in 1986 with the original engine.

Thank you

you may try a borescope up its ass or contact mb... got a vin/fin #???

RE: OM617A Setting - R-3350 - 05-04-2017

the oil squirter looks like the two things i am holding in the first picture the allen bolt faces down toward the oil pan in the second you can see the machined pads on the block where they bolt by the upper left corner of each bore.[Image: IMG_20161004_163214_zpsoovv54ch.jpg]

[Image: IMG_20170502_184912_zpssbqono88.jpg]

RE: OM617A Setting - atypicalguy - 05-14-2017

Great photos of the squirters! Thanks for that.

RE: OM617A Setting - grizzlee - 05-25-2017

I went to the MB service and NZScott, unfortunately you are right.
I do not have these oil nozzles. I do not know what to do,but i guess that a small turbo will not destroy the engine in time.

Is there any possibilty to mount the oil nozzles or do i have to start making wholes in my engine?

In this condition, what would you advise me to do? I have seen that Barrote has a nice IP for sale, but i do not know what would be the result if i couple that IP with a turbo and some bigger nozzles? I have also seen some setups with the standard IP + nozzles and a BMW GT2256V turbo, which worked as far as i know on the long term.

Thanks in advance.
Sebastian

RE: OM617A Setting - NZScott - 05-26-2017

I was going to install nozzles in mine - but needs to be completely torn down for that, and I have a 617.952 in my garage needing some work so I didn't worry.

Just run cool EGTs and you should be fine - that's what I plan on anyway.

New (injector) nozzles aren't necessary if they work ok. Yea sure I put some 315s in... but they're not needed for power