Greenbush
XS650 Enthusiast
Hello guys. I'm working on a friends 79 XS650. Unfortunately the previous bike builders lost
My buddy's shop book. Tryin to locate.
Here is the deal, when it's running it has a sharp metal tapping noise that seems to come from the middle of the cylinders but seems in the lower part of the head.
I drained oil and it swirly with brass flakes, like black
metallic paint..yikes.
So, I have the clutch plates out, cam chain tensioner unit out, tappet covers off and oil filter housing
Off and when I rock the crank back and forth I hear it. It's almost as if the cam srocket is loose. I'm a bit freaked by all the brass in the oil. The oil and filters have been changed recently by previous techs.
There's no smoke coming out of the exhaust when running nor on the plugs. What bearings in these engines or brass? Figure valve sleeves but what else?
Any ideas? Besides taking head off, right now. Probably around corner.
Excuse typos. On my dummy phone.
My buddy's shop book. Tryin to locate.
Here is the deal, when it's running it has a sharp metal tapping noise that seems to come from the middle of the cylinders but seems in the lower part of the head.
I drained oil and it swirly with brass flakes, like black
metallic paint..yikes.
So, I have the clutch plates out, cam chain tensioner unit out, tappet covers off and oil filter housing
Off and when I rock the crank back and forth I hear it. It's almost as if the cam srocket is loose. I'm a bit freaked by all the brass in the oil. The oil and filters have been changed recently by previous techs.
There's no smoke coming out of the exhaust when running nor on the plugs. What bearings in these engines or brass? Figure valve sleeves but what else?
Any ideas? Besides taking head off, right now. Probably around corner.
Excuse typos. On my dummy phone.