Haven't had an Audi in a while but I recently picked up this 2012 Q5 that had a knocking engine. PO was a major pig and let it run low on oil. 3-4 years ago this car had a full piston job at Audi, PO bought it soon after that where it decayed AGAIN. I got the car for cheap so I decided to rebuild the engine.
Before buying:




Camshaft damage:



Head damage:


After taking block apart, scored cylinder wall, block was scrap:

Making the boring bar setup to repair the head/cover:

Parts came in:

Preheating & welding:


After boring out the welds, then a lot of hand filing ,etc. Not perfect, but will do the job just fine:


AM pistons ultrasonically cleaned, with new rings:

Junkyard block got all new bearings for mains and rods:

Head rebuilt/cleaned up:



Timing done:



Going back in:



First start:
https://www.youtube.com/watch?v=q9aQotOFdK0

Running pretty good so far!

As maybe you noticed, the black Q5 also in the background...also got for very cheap, needed timing chains done to it.
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