Damaged Camshaft Turned into NIGHTMARE on this E90 335i | N54 Engine Build Pt. 1 | 4K

Описание: This E90 335i BMW came in for some basic performance upgrades, including a larger turbo, an aluminum valve cover, and a dual catch can setup. But once we got into the teardown, things took a turn…

We discovered leaking valve stem seals on the exhaust side, which led us to pull the cylinder head. That’s when we found a damaged exhaust camshaft — and even worse, a gouged cylinder wall on cylinder number 4.

What started as a mild upgrade quickly turned into a full engine rebuild. This build will include:
🔧 Manley 84.5mm pistons
🔧 Manley H-beam connecting rods
🔧 Schrick camshafts
🔧 Supertech titanium valve spring kit with retainers
🔧 King Race Bearings
🔧 Upgraded crank hub

This is Part 1 of the series — a quick overview and a first look at the damage we uncovered. Stay tuned as we take this build from teardown to a bulletproof 800WHP single turbo N54.

👉 Don’t forget to like, comment, and subscribe so you don’t miss the next episode!
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Chapters:
00:08 Intro
02:40 Damaged Exhaust Camshaft
05:00 Cylinder 4 Liner Destroyed
08:30 Cylinder Head Teardown
11:00 Exhaust Valve Stem Seals
11:30 Outro
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