Piston, Crankshaft and Main Bearings Replacement - BMW N55 Engine Rebuild Project Part 2

Video Description

BMW N55 Engine Rebuild Tools: https://amzn.to/4hMmRuj Parts: https://amzn.to/4aPGWxq Part 3: https://youtu.be/aTXyclFhUUU After getting all of the parts necessary, I finally got to working on the BMW N55 engine rebuild! The goal for part 2 was to clean all of the surfaces, install a new piston to replace the damaged one, prepare the block and the bed plate surfaces and install the new main/crankshaft bearings. Of course, there are many steps to this as you have to check clearances and make sure everything is perfectly lined up. After the bearings were installed, I test fitted the crankshaft in the engine with Plastigauge on all of the journal, torqued the crankshaft bolts and then took it back apart. Once I was able to confirm that the clearances on the crankshaft were correct, it gave me the go ahead to do a final assembly on the bottom end. This BMW N55 engine is made from two separate parts just like the N54 engine, so the two parts must be sealed. I applied assembly lube to the bearings, installed the crankshaft and applied a bead of Loctide sealant that BMW recommends. Then I installed the bedplate for the last time! Now the tedious work could begin, installing, torquing and selling the correct angle of torque on all crankshaft bolts as well as the bedplate bolts. Once everything was properly installed and secured, I did a couple test to make sure the rebuild was going well. I tested the rotational drag on the crankshaft as well as determined crankshaft axial clearance. BMW N55 Engine Rebuild Project Playlist: https://youtube.com/playlist?list=PLfGJyGAcNr7-J2rSmmcNcQIT0QIvi2jCL BMW 335i Playlist: https://youtube.com/playlist?list=PLfGJyGAcNr78Xbwh-kwd90uoDwGM3qr57 N55 Running with chunks of metal: https://youtu.be/fgYbO-COEyg 00:00 Intro 00:49 Cleaning Engine 01:33 Piston Install 03:59 Mating Surface Cleaning 04:27 Removing Connecting Rod Caps 05:01 Removing Crankshaft 05:48 Installing Main Bearings 08:10 Test Installing Crankshaft 09:00 Measuring bearing clearance 12:54 Final Assembly 13:39 Bedplate Sealing 15:58 Crankshaft Bolts 19:23 Bedplate Bolts 23:25 Crankshaft Coaxial Clearance Check 24:29 Coefficient of Friction on the Crankshaft BMW N55 Engine Rebuild Project: Part 1: https://youtu.be/YwakFiOahWQ Part 2: https://youtu.be/GpFGxolRnFU Part 3: https://youtu.be/aTXyclFhUUU Part 4: https://youtu.be/vZB8ph2pmqM Part 5: https://youtu.be/-apNebfNCMA Part 6: https://youtu.be/5BHBoLIio14 Part 7: https://youtu.be/TRsJIoWPzl0 Part 8: https://youtu.be/CtXZ7jsuh1g Part 9: https://youtu.be/VR1D8ULcqqY *— MUST HAVE CAR ITEMS — * My Favorite BMW Scanners: https://amzn.to/4b6GQBa My Favorite Car Scanners: https://amzn.to/3tR2VTT My Favorite CarPlay Units: https://amzn.to/3Uc8lTZ BMW Focused Mechanic's Tools: https://amzn.to/3krC4J1 Portable Tire Inflator: https://amzn.to/3V5F63v (my favorite) Portable Jump Starter: https://amzn.to/3L3YNUX Favorite Dash Cam: https://amzn.to/41EdqWe (under $150) Car Phone Mount: https://amzn.to/44bW1oM (MagSafe Air Vent), https://amzn.to/483S5ty (+Wireless Charger) “BMW” Battery Charger: https://amzn.to/3HahLIi GEAR I USE FOR FILMING: https://amzn.to/3Ex3RyI ______ Support me: https://www.patreon.com/Simplecarguy https://www.instagram.com/simplecarguy/ http://simplecarguy.com ------------------------------ Links are affiliated where possible. This means if you click on the link and purchase the product, I will earn a commission.