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Hey guys, I'm in the process of tearing my engine down; took off the #1 piston to clean it up (all 4 have apretty good layer of carbon buildup), and after I got the carbon cleaned off the top I found what's in the picture. Both sides of the piston between the valve reliefs and the edge are like...

So, after looking and looking and looking...and looking for any sort of performance parts for my 83 Nighthawk CB650SC (inventive screen name, I know), I've come to the conclusion that they just don't make them, at least, not anymore... That brings me to my current dilemma, having read the post...

Hey guys, looking to get some input on good places to get machine work done. Looking for a bore/hone and a valve job. I'm about an hour Northwest of Winston (stretching out the Triangle a lil' bit ;D), but anywhere that's worth mentioning, I'm open to any suggestions :) Thanks guys!

From my understanding, it isn't possible to adjust ignition timing at all with the stock setup. My questionis, is there any way to make it adjustable? Modifying the factory setup, an aftermarket solution, a factory swap, anything? Also, does anyone make anything performance-minded for this...

Hey y'all, glad I found this site ;D. Born and raised in NC, then moved to Kansas for a few years, where I caught the 2 wheel bug. Bought a Nighthawk, and after getting some experience, and being back in NC, I'm ready to make a project out of it. The knowledge here is going to help me quite a...