LarryC wrote:
DesertKZ wrote:
LarryC wrote: You could leave the valve seals completely out of a head with good guide to stem fit and not have oil gushing into the chamber.....
Thanks Larry. Do you think bad rings could push oil all the way out to the carbs? Because that's where I found a puddle of engine oil, in the carb boot.
FYI I am bringing the cylinders, pistons and head to our local machine shop next week for surgery.
It's not common for oil to be all the way back to the carbs. The bike must have smoked something awful... Perhaps you have a loose guide bore in the head and oil is sucking right down around the guide itself. Generally if it's piston related, it blows it out the pipe. An overlapped oil control ring will load the cylinder with oil and blow it out the pipe.
Disassembled the head today. Guides looked good, valves themselves seemed tight in the guides. Valve seals were intact but very hard, some crumbled including that #3 I was having trouble with. Right before I tore it all apart it was smoking pretty bad.
*****UPDATE*****
Just for future reference I figure I'd update. The #3 carb was improperly adjusted (synced). The slide was closed too far, which caused an enormous vacuum inside the intake, which ultimately drew the oil down through the intake valve ruining the seal. The seals have been replaced, carb resynced and all is well again. Thanks again.
