New purchase questions -2006 Roketa 200cc DB-06

[Landsvw]

Latest on the Honda: bike ran better. Sealant didn’t work. Evidently there is a case leak just behind the cylinder. I pulled the engine, and then decided to see if the CB125 (which is bored .25 over and looks like a fairly fresh set of rings) engine was usable. Spark plug hole needs helicoil so I ordered a cheap version off eBay. Also, the valve seats, especially the intake valve are very rusty (like horrible. Wouldn’t hold gas when I poured some into the intake). I pulled the valves out of it and will lap them both in this week (I got to use a 3$ garage sale valve spring compressor I had on my shop shelf for maybe 4 years, and it works like a charm! Woo hoo!). When the helicoil Kit gets here should be able to fix that issue then reinstall the head. That should restore compression. I’ll then put the 125 engine in the bike. Meanwhile, I’ll spend some time once the bike is back together pulling the left side case ‘again’ and seeing what’s up with the leak. I ordered a new case gasket too so that should help the process. Might just go ahead and buy a used cl100 left side too, since maybe the sl125 case is slightly different and causing me an issue? Anyway I really enjoyed my weekend taking apart engines and just mega tinkering with this old beast. Have a great week all!