Classic BMW 850i V12 Engine Tear-Down, The Masterpiece of the 90s - The Car Edition

Published at : 12 Dec 2025

This 1991 BMW 850i V12 came into The Car Edition burning oil, misfiring and leaving a trail of blue smoke behind it. With just 88,000 miles on the clock, this 5-litre V12, 300 bhp grand tourer deserves a proper second life and that’s exactly what it’s getting.

In this first part of our BMW 850i V12 heads rebuild series, Gytis begins by removing the entire engine from this legendary coupe.

The plan for this rebuild includes:
🔧 Full removal of the V12 engine
🧰 Cylinder head rebuild with new valve stem seals and valve guides
⚙️ Inspection of pistons, cylinders and gaskets

This video shows the start of a multi-part series where we’ll dive deep into every stage of restoring this incredible machine. From diagnosing oil consumption and misfires to bringing the engine back to life, we are showing it all.

If you are into classic BMWs, V12 engines, or just love seeing proper mechanical work done by hand, you won’t want to miss this one.

Stay tuned for Part 2, where we will rebuild the engine and start preparing this V12 for its first run.

Contact The Car Edition:
📞 Phone: 01480 759004
📧 Email: info@thecaredition.co.uk
🌐 Website: www.thecaredition.co.uk
📍 Unit 4 -5 Cinch Storage, St Margarets Way, Huntingdon PE29 6EB

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