G63 AMG M157 engine differences
Discussion
A friend recently bought a G63 AMG from a European auction unseen and has now found it is low on compression on cylinders 4 and 8 and an endoscope has revealed scores in the bores on both these cylinders. There's mixed opinions on trying to rebuild the existing engine as it is an Alusil block so he has asked me to source and fit either a known good secondhand engine or a warranted reconditioned one.
From the VIN his engine is the M157.984 while all the ones I have found so far (only after a fairly quick search admittedly) are either M157.982 or 983. What is the difference? Can I fit an M157.983 for instance? I assume I am going to have to retain his original engine ECU as it is likely to be coded to the VIN, is there anything else that will need to be retained and will the ECU for a .984 run a 983 or 982?
Any recommendations for a source of an engine would be useful too.
From the VIN his engine is the M157.984 while all the ones I have found so far (only after a fairly quick search admittedly) are either M157.982 or 983. What is the difference? Can I fit an M157.983 for instance? I assume I am going to have to retain his original engine ECU as it is likely to be coded to the VIN, is there anything else that will need to be retained and will the ECU for a .984 run a 983 or 982?
Any recommendations for a source of an engine would be useful too.
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