Here we go.
So I bought a 1980 cb750 custom from a buddy of mine for pretty cheap. He bored the cylinders, replaced piston rings, tuned it up and then preceded to let it sit for 2 years.
After washing the tank, new and gapped spark plugs, and new battery. Fresh oil and clean carbs I finally got her to crank up, only to find she burned on two cylinders.
1 and 4
I took off the left plate cover and found that the advancer unit was wobbling in place and colliding with the terminal for cylinders 2 and 3 and causing some damage.
I removed the plate, have a new one now. And when I removed the advance unit I noticed this wear on the crankshaft.
http://imgur.com/a/WRyyh
This may be why it's not seating properly and wobbling, or the shafts itself is bent. Any ideas on a possible fix? Hopefully one that doesn't involve replacing the shaft.
So I bought a 1980 cb750 custom from a buddy of mine for pretty cheap. He bored the cylinders, replaced piston rings, tuned it up and then preceded to let it sit for 2 years.
After washing the tank, new and gapped spark plugs, and new battery. Fresh oil and clean carbs I finally got her to crank up, only to find she burned on two cylinders.
1 and 4
I took off the left plate cover and found that the advancer unit was wobbling in place and colliding with the terminal for cylinders 2 and 3 and causing some damage.
I removed the plate, have a new one now. And when I removed the advance unit I noticed this wear on the crankshaft.
http://imgur.com/a/WRyyh
This may be why it's not seating properly and wobbling, or the shafts itself is bent. Any ideas on a possible fix? Hopefully one that doesn't involve replacing the shaft.