Today we tear into BMW's infamous 2.0L "N20" 4cylinder engine. These engines can be found in the 320i, 328i, X1, X3, and the 528i amongst several others. This is a core engine, purchased for the purpose of parting out. As with most core engines, I never know what's wrong until it gets torn down, which is the purpose of the video.
The N20 is an engine that came out in 2012 to replace the outgoing N52 inline 6. Many people regard the N20 as inferior for a multitude of reasons, but the biggest being its propensity for expensive repairs and failures.
Why am I doing this? My name is Eric and I own Importapart. A full service auto dismantler. Part of our model includes dismantling blown up, failed and otherwise bad engines to salvage the good parts. We do not rebuild engines, merely supply parts to those who do!
TO BUY PARTS, visit www.Importapart.com OR email us at [email protected]
Every week I post at least one teardown video as I have over the last 3.5 years. Here are a few of my favorite videos from the past:
BMW N63 Hot-V Destruction! https://youtu.be/nqu7B8DPi_o
Mercedes Twin-Turbo M278 Teardown https://youtu.be/ubMyWT49IWs
Tearing down a bad BMW N55 https://youtu.be/8jKTGAQSCrk
Audi 3.0L Turbo DEAD Before its first oil change https://youtu.be/sXwU_hwPOjo
00:00 Intro
03:19 Removing the spark plugs, how do they look?
04:01 Pulling the DME Engine Control Unit off of the intake manifold
06:03 Removing the intake manifold and taking a look at the intake ports
07:31 Unbolting the turbocharger and checking its condition
09:55 Removing the entire N26 Fuel System. Rail, Lines, Injectors, HPFP
11:16 Valve cover removal, how well was this taken care of?
12:33 YIKES! We have normal BMW failures I see
13:43 A collapsed oil filter!?
14:59 unbolting the timing chain guides
15:31 loosening and removing the vanos cam gears
16:25 Removing the timing chain guide
16:51 Removing the timing chain guide
17:01 Removing the timing chain guide
17:31 Removing the timing chain guide
17:39 Removing the timing chain guide
18:43 Cramming the exhaust cam craps loose
19:10 exhaust camshaft, cam caps and journal inspection
20:21 Pre-paring the valvetronic system to gain access to all of the head bolts
21:18 Cracking the T55 and T60 Head bolts loose
22:59 Pulling the cylinder head off of the engine block
23:23 Science
23:36 First look at the pistons, bores and cylinder head surface
25:07 Unbolting the X-Drive oil pan/sump
25:36 The Pan is OFF
26:32 The oil pickup tube is.... PACKED
29:15 Oil pump and balance shaft assembly removal, disassembly and inspection
31:51 unbolting the first rod and piston
32:51 unbolting and removing the final rod and piston
34:25 prying the bedplate loose and removing the crankshaft
34:50 Full rotating assembly inspection. Crankshaft, rods and pistons, bearings, block and bores
37:25 Summary
I really hope you enjoyed this teardown. As always I love all of the comments, feedback and even the criticism. Catch you on the next one!
-Eric