thwrightstuff
"Trust me, I'm an engineer"
Hello guys,
I've got a 1980 CB650C with a 4-1 aftermarket exhaust and stock air box on it. Throughout the process of tuning the bike I've had to readjust the valves a number of times. It seems that every time, the valves are initially quite, but then very quickly get noisy again. I've tried just spot checking and correcting only the ones that seem out of alignment and also trying all at once. Neither approach has yielded and consistent results, let alone a quite engine. Please, this is driving me nuts and I need to get this fixed. Do I need to start considering rebuilding the top end with new valve stems and even possibly a rebuilt cam shaft?
I've got a 1980 CB650C with a 4-1 aftermarket exhaust and stock air box on it. Throughout the process of tuning the bike I've had to readjust the valves a number of times. It seems that every time, the valves are initially quite, but then very quickly get noisy again. I've tried just spot checking and correcting only the ones that seem out of alignment and also trying all at once. Neither approach has yielded and consistent results, let alone a quite engine. Please, this is driving me nuts and I need to get this fixed. Do I need to start considering rebuilding the top end with new valve stems and even possibly a rebuilt cam shaft?