Learn how to replace the pistons and rebuild the engine from a vintage Honda CB200, CL200, CB175, CL175, and SL175. This video is the indepth HOW TO version, if you want to watch the much more entertaining THEATRICAL CUT version, follow this link:    • Vintage motorcycle engine rebuild! St...  

What happened to this engine? I was trying to ride it ~100 miles roundtrip to a motorcycle show in Kansas City, but I had not tuned the engine in a few years. I only got about 20 miles when I started to slowly loose power, I was at full throttle but could not keep up with highway traffic. Then suddenly I lost power completely. When I finally got the bike back home, I checked compression and one cylinder had no compression at all. Clearly I needed to open up the engine and see what happened.

This is actually the 2nd time I've rebuild this engine due to a broken piston! Safe to say I'm a bit of an expert at this point (and yet I still made many many mistakes, as shown in this video).

0:00 Introduction
0:42 Removing the head
6:45 Opening the crankcase
10:00 Replacing the cam chain
12:18 Reassembling crankcase
17:24 Installing new pistons
18:35 Reassembling head
20:31 Mistakes were made
24:07 Reassembly
25:41 Start up