C270cdi OM612 Tuning - e320cdi turbo

[Todd117]

Hi all,

Done plenty of googling and searching around and lacking a definitive answer for upgrading the turbo on the c270cdi to the turbo from the W210 e320cdi.

I understand its a direct bolt on for the turbo itself but the supporting mods are not totally explained.

so far I have a number of parts on the way...

W210 E320cdi GT2359V turbo

W211 E320cdi intercooler

4 Bar MAP sensor (A007 153 0028)

Diesel fuel pump from an ML400 Cdi (A1634701894)

Regarding the fuel pump is this a bolt on fit or are there any modifications required for it to fit? I have conflicting reports from friends and the Internet.

The same goes for fuel Injection, I understand C30 amg injectors are desired but I am not keen on trying to source these Ive seen somewhere stating e320cdi Injectors will do they job and some saying they won't and my current ones will with the nozzles modifying(?). More Information on this would be great as I think it's the missing piece to my puzzle.

All this will obviously come with a full decat, EGR removal as well as Swirl flaps removal and remap.

If I have missed anything please let me know. I'm new to mercedes but keen to learn.

Aiming for around 300hp? Or is that silly? If its the turbo holding me back I've got access to a few bigger ones but I'm trying to stay in mercedes part bin. Again no definite figures from online.

Cheers.

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[Craiglxviii]

This sounds... complex.

 

[John Laidlaw]

....^ indeed....

 

[LostKiwi]

Not something I've ever heard anyone on here doing.
All the high power diesel mods I've read about were using the older 6 cylinder engines.
I'm not sure your gearbox will handle it either.

 

[js190d]

Hi, there is a company in Yorkshire called Diesel pump uk which has done modifications on a om613 s210 who might be able to help you but i imagine it is far more complex (read expensive) to STD a common rail diesel than a mechanical pumped om606. Here is some links..
https://www.dieselpumpuk.com/

 

[Todd117]

Thanks for the replies. Seen quite a bit on STD about the common rail engines being upgraded but it is a lot more complex. I might give them a call and see what they say.

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[js190d]

It would be interesting to hear how you get on in your search for more diesel power. I have been thinking of doing the EGR shunt mod on my 320cdi which should give more hp / torque for very little outlay.

 

[Craiglxviii]

Typically it’s easier, cheaper and more consistent to do something to an engine that the engine was designed for... jus’ sayin’!

 

[umblecumbuz]

It would be interesting to hear how you get on in your search for more diesel power. I have been thinking of doing the EGR shunt mod on my 320cdi which should give more hp / torque for very little outlay.

Not really noticeable in day to day driving.

 

[alexanderfoti]

4 bar map will need rescaling in ECU
320 injectors are the same as 270cdi injectors, there is just another one of them. Either the injectors have to be modified, or you need c30 cdi injectors.

The fuel pump you need is the HP pump not the in tank pump, the 270 CDI lift pump is on the front of the engine.

You will also hit issues with gearbox TQ mangament before anythign else, this will need to be mapped as well.

I wouldnt bother with MB intercooler, just find the biggest one you can fit in the space in the bumper and connect it up. It will be cheaper as well.

 

[Todd117]

4 bar map will need rescaling in ECU
320 injectors are the same as 270cdi injectors, there is just another one of them. Either the injectors have to be modified, or you need c30 cdi injectors.

The fuel pump you need is the HP pump not the in tank pump, the 270 CDI lift pump is on the front of the engine.

You will also hit issues with gearbox TQ mangament before anythign else, this will need to be mapped as well.

I wouldnt bother with MB intercooler, just find the biggest one you can fit in the space in the bumper and connect it up. It will be cheaper as well.

Thanks for the reply. Those C30 injector prices are a bit eye watering especially when compared to the value of the car. And I didnt know that about the pump... Guess the one Ive got is going back. This lift pump then what should I be searching to get hold of one?

Is the TQ limit on the gearbox electronic?

A remap and decat and ehr delete seems like much less of a headache lol.

Is 250hp achievable without extensive mods or is that dreaming with the standard turbo? Providing I get a bigger intercooler.

Cheers.

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[alexanderfoti]

Thanks for the reply. Those C30 injector prices are a bit eye watering especially when compared to the value of the car. And I didnt know that about the pump... Guess the one Ive got is going back. This lift pump then what should I be searching to get hold of one?

Is the TQ limit on the gearbox electronic?

A remap and decat and ehr delete seems like much less of a headache lol.

Is 250hp achievable without extensive mods or is that dreaming with the standard turbo? Providing I get a bigger intercooler.

Cheers.

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Yes its controlled by the TCU, this can be remapped by us as well.

Its the high pressure pump not the lift pump you need.

A remap/decat and egr will give you approx 230-240bhp and approx 570nm. It will be quite quick. Bigger IC will likely get you close to 250bhp.

Anything more will need more mods. You run out of air with the stock turbo. Stock map sensor is 2.5 bar, so you cant run more than approx 1.45 bar on stock turbo without hitting that limit, not that the stock turbo has much puff after 1.5 bar anyway.

 

[Todd117]

Yes its controlled by the TCU, this can be remapped by us as well.

Its the high pressure pump not the lift pump you need.

A remap/decat and egr will give you approx 230-240bhp and approx 570nm. It will be quite quick. Bigger IC will likely get you close to 250bhp.

Anything more will need more mods. You run out of air with the stock turbo. Stock map sensor is 2.5 bar, so you cant run more than approx 1.45 bar on stock turbo without hitting that limit, not that the stock turbo has much puff after 1.5 bar anyway.

Right I see! Thanks. I think for now this route is much more appealing. Once I've gutted the cats and got a bigger IC I'll get in touch.

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[LostKiwi]

Yes its controlled by the TCU, this can be remapped by us as well.

Its the high pressure pump not the lift pump you need.

A remap/decat and egr will give you approx 230-240bhp and approx 570nm. It will be quite quick. Bigger IC will likely get you close to 250bhp.

Anything more will need more mods. You run out of air with the stock turbo. Stock map sensor is 2.5 bar, so you cant run more than approx 1.45 bar on stock turbo without hitting that limit, not that the stock turbo has much puff after 1.5 bar anyway.

Do these use a WA580 gearbox (as used with V8s) or is it the lower rated WA330?

 

[Todd117]

Do these use a WA580 gearbox (as used with V8s) or is it the lower rated WA330?

I think it's the WA580.

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[alexanderfoti]

Yes 580 although there are some odd ones with the 330.

Keep in mind this is a continuous input torque rating, so you can exceed it for brief periods.

 

[om613]

I know the owner the first W211 to have had a OM606 fitted, by DPUK.
Guess how happy he was with it.

 

[Rostislav]

3.2cdi turbo 197hp (gt2359v watch out their are 2 models, 1 will fit without problem to your downpipe if you have downpipe btw, also from this engine the high pressure fuel pump E3.2 cdi 197hp , fuel rail from 177hp motor (higher pressure), 4 bar MAP sensor, bigger intercooler (550x180x65 or 550x230x65) Stock 2.7cdi high pressure fuel pump can handle 200hp not more. With this mods you cant get max 270-280hp, for more hp c30 injectors or high pressure fuel pump (400cdi, but need remake) And really good remap