G Class (W460, W461, W463) Produced 1980-2018: 290 GD, 290 GDT, 300 GD, 350 GD, 500 GE, G250, G300, G300 DT, G320, G500, G550, G55 AMG, G63 AMG

Looking for a G63 engine

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Old May 21, 2025 | 11:00 PM
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AMG GTs, G550, CLK430, Audi A3 avant, 78 Bronco
Looking for a G63 engine

I am looking for a low mile M157 engine for a 2017 G63. Any ideas on the best place to find one? There are very few out there, that I have found. Even on scarce on eBay. Thanks in advance!!
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Old May 23, 2025 | 12:26 AM
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G63
Can you share what failed?
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Old May 23, 2025 | 12:12 PM
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Originally Posted by 95_993
Can you share what failed?
Absolutely! I own a shop and we have someone that had just purchased it from a mom and pop dealership out of state. On her way home, it seized while driving. After inspection, the motor was found to have a lot of metal in it and it had cylinder scoring. I would guess at some point the oil was not changed as it should have been or it got real low. The owner is so sweet and we are trying to help her out. I’m a big Mercedes enthusiast as well so that’s why I wanted to see if any of the forum had some prospects. We might have found one with low miles. Keeping my fingers crossed.
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Old May 23, 2025 | 04:25 PM
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G63
Thanks for sharing.

I was suspecting you might say bore scoring. I've been wondering if the available oil pressure solenoid that lowers the oil pressure at low loads has anything to do with the bore scoring on m157s.

Wishing you the best on the project. Please do a couple of posts as you go through the project.

Last edited by 95_993; May 23, 2025 at 04:28 PM.
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Old May 23, 2025 | 07:48 PM
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Originally Posted by 95_993
Thanks for sharing.

I was suspecting you might say bore scoring. I've been wondering if the available oil pressure solenoid that lowers the oil pressure at low loads has anything to do with the bore scoring on m157s.

Wishing you the best on the project. Please do a couple of posts as you go through the project.
Very good point. I had a 16 GL63 that ended up blowing the motor many years ago. It looked like it was starving for oil by the discoloration on areas of the rod caps.

I will make sure to add pictures and keep you posted on the progress!
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