travo wrote:
Hi guys,
I have a 2003 2.8 export model KJ which has a VA71 turbo (waste gate controlled garrett).
Well my turbo seals have been faulting for a while but now the waste gate has seized so i'm looking at replacing the unit.
My question, does anyone know if a GTA2056V from the 2004+ models would fit and run normally without modification to the ecu?
The GTA2056v has the variable vanes and i believe, are a more efficient turbo.
Does anyone have insight into this?
Cheers,
Trav
The bolt pattern to the exhaust manifold should be the same, however at least on my 2002 pre production engine the turbo to downpipe flange is different. the 05+ turbo uses a V band clamp, my 2002 2.5 uses a 4 bolt flange. Can you check on yours to see what type of outlet it has?
Even if you got a that storted the real issue is how to control boost, the 2005+ has a different ECU and more wiring with a vacuum actuator, this would not be ab easy prospect to make work correctly, however sometime people hook the turbo vacuum actuator directly to the turbo actuator line....this might work "good enough".
Some guys with older mercedes sometimes swap in the variable geometry turbos, they have the same issue you would.
The short answer is the easiest thing would be to get a stock replacement, it will be a little bit of a science project to get the newer turbo to work.
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