Hi everyone. I'm brand new to cb750.com, although I've been an owner for more than a decade. Im just getting started on a new project, putting together my old bike, and it seemed like the perfect time to join and introduce myself.
So this is my 1980 CB750C that I bought from my brother a few years back. It wasn't running at the time due to some carburetor issues which worked for me since I didn't know how to ride then. I have a background in auto mechanics so I had some base knowledge about carbs. The rest I filled in with a service manual. After learning to ride for a couple of summers back in Minnesota I decided to replace the leaking valve cover gasket. The long Minnesota winters turned that into a full head to toe gasket replacement. I managed to get the bike back in one piece but it took about two years (mostly because I moved away from where my bike was). I can't say why exactly but it never ran quite perfect after that. It did run though and I put a lot of miles on it. It stayed in MN after I moved to Denver about four years ago and I bought a cheapo CM400 to keep me occupied until I could bring it here. Finally flew there and rode it back for my first cross country trip. It made it just fine but after a couple of years the running issues started to get more pronounced. The symptoms include a vague rattle in the engine and some hesitation under load at mid range RPMs. at one point last summer the oil light came on but it had all the oil it was supposed to. I decided it was time to dig in and try to find the problem. I think that the original symptoms were probably mostly due to valve clearance issues but the oil light looks like it was caused by a clogged pick up screen. I don't know what it is that was clogging it but it was some sort of fuzzy residue. If it were that simple I would just clean it out and put it back together but there were also some chunks of broken metal in the oil pan. On a couple of occasions I've decided that it won't get fixed and I should just sell it in parts. Today I brought it home from a friends garage where I was working on it and I've decided to dismantle it and find the exact cause (source of the broken metal) before I make that decision.
So there's my full story. I feel like I'll stand a better chance if I post my progress on here where I'm sure to get advice and encouragement.
Thanks for reading and let me know what you think.
So this is my 1980 CB750C that I bought from my brother a few years back. It wasn't running at the time due to some carburetor issues which worked for me since I didn't know how to ride then. I have a background in auto mechanics so I had some base knowledge about carbs. The rest I filled in with a service manual. After learning to ride for a couple of summers back in Minnesota I decided to replace the leaking valve cover gasket. The long Minnesota winters turned that into a full head to toe gasket replacement. I managed to get the bike back in one piece but it took about two years (mostly because I moved away from where my bike was). I can't say why exactly but it never ran quite perfect after that. It did run though and I put a lot of miles on it. It stayed in MN after I moved to Denver about four years ago and I bought a cheapo CM400 to keep me occupied until I could bring it here. Finally flew there and rode it back for my first cross country trip. It made it just fine but after a couple of years the running issues started to get more pronounced. The symptoms include a vague rattle in the engine and some hesitation under load at mid range RPMs. at one point last summer the oil light came on but it had all the oil it was supposed to. I decided it was time to dig in and try to find the problem. I think that the original symptoms were probably mostly due to valve clearance issues but the oil light looks like it was caused by a clogged pick up screen. I don't know what it is that was clogging it but it was some sort of fuzzy residue. If it were that simple I would just clean it out and put it back together but there were also some chunks of broken metal in the oil pan. On a couple of occasions I've decided that it won't get fixed and I should just sell it in parts. Today I brought it home from a friends garage where I was working on it and I've decided to dismantle it and find the exact cause (source of the broken metal) before I make that decision.
So there's my full story. I feel like I'll stand a better chance if I post my progress on here where I'm sure to get advice and encouragement.
Thanks for reading and let me know what you think.