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Turbo advice OM612 G-Class
Matthias4x4 Offline
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Posts: 15
Joined: Jan 2018
Location: Austria
#1
Turbo advice OM612 G-Class
Hello I need your advice or if someone has already tested more with an om612. It's about I don't want to waste money on an idea unnecessarily.
I had a software modification on my G last year. the performance and torque was better but I got big problems with high water temperature, charge air temperature and oil temperature. After that the engine said goodbye so I tested where the weaknesses of the engine are.

First of all: I do not want to install another engine and do not yet convert to cp3 or c30 injectors because I want to test step by step where problems again arise. And the prices for C30 donnor too expensive for mileage over 300 thousand kimoleters.

Now I have rebuilt another engine and changed a lot about it.
Data Mercedes E Class om 612 with 170 ps (original)
Intercooler converted from water-air to air -air 3 times bigger!
Oil cooler converted from water oil to air oil
Exhaust system 3 inches.
Swirl flaps expanded.
EGR deactivated and locked.
4bar map sensor.

Now it's about the turbocharger: My question to you:
I want to have about 230 HP (Stock170) on the engine and 600 MN (Stock 400), but the whole thing should respond quickly and is an off-road vehicle that is used for pulling trailers, so it also runs for long periods under full load. So it is wise to have a Gt2259 with billet compressor wheel built because I have an original GT2256V and I also have a broken GT2359V from OM613 here and saw that it is possible to assemble it.
Is the exhaust side of the GT22 too small or do I get too much back pressure with my expected performance?
Is the GT2359V too sluggish in the response behavior in the plug an play solution without c30 and CP3?

greetings from Austria
01-15-2020, 06:42 AM
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baldur Offline
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Location: Iceland
#2
RE: Turbo advice OM612 G-Class
I have a ML270 CDI OM612 and I plan to test a turbo off an OM648, I will post my results from that, probably in 1-2 months.
Baldur Gislason

01-15-2020, 08:43 AM
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Matthias4x4 Offline
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Location: Austria
#3
RE: Turbo advice OM612 G-Class
(01-15-2020, 08:43 AM)baldur Wrote: I have a ML270 CDI OM612 and I plan to test a turbo off an OM648, I will post my results from that, probably in 1-2 months.

Oh hat the same idea! Now i send my GT2256V to a shop an he make´s me an GT2260V with light Turbine weel, billet Compressorweel and more efficient Vanes. Than i will try how it works with stock injectors!
01-16-2020, 08:23 AM
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Talonki Offline
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Location: Finland
#4
RE: Turbo advice OM612 G-Class
om613 (gt23v) turbo goes almost straight to om612. Big enough to make 250/600. Stock fuel system can handle the power.
(This post was last modified: 01-24-2020, 04:07 PM by Talonki.)
01-24-2020, 04:04 PM
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