Mystery oil passage on 63 CB77

[redblk63]

As I reassemble my engine, after a 30 year hiatus, I was puzzled by what appears to be an oil distribution line. This is on the top of the engine top case. I cannot find it on any oil system flow diagram and wonder if anyone can tell me where it goes?

Here is a description of where it is. The oil from the upper engine case emerges from a hole on the top case in front of, and between, the cylinders. Then it goes up into the cylinder, where it splits and runs up along each of the forward/outer cylinder studs to lubricate the cam bearings, rockers, etc. At the bottom of the right hand forward stud, there is a groove cast in to the upper engine case that ends at a jet which appears to partially restrict oil flow so that a controlled amount runs back down into the engine case. Does this oil go to the outer right crankshaft bearing, or to ...?

Is it considered a mortal sin to re use piston pin clips?

Just wondering,
Larry in Pasadena

[davomoto]

Larry, it oils the crank bearing. I am guilty of re-using clips, when something needed to be done right away, and I just couldn't wait. That said, use new clips whenever possible! Pics are always appreciated.

davomoto

[redblk63]

Thanks for the info, Davomoto. Now I am glad I took the trouble to thoroughly clean out the gasket goop the DPO used. Yeah, I should have included a picture, I'll try to add some after the fact.

Larry in Pasadena

[redblk63]

OK, here is the picture of the oil passage i wondered about. I also added pictures of the frame after i knocked off most of the rust and painted it. Can't wait to get the engine back together and fire her up!

Larry in Pasadena

[redblk63]

looks like only 1 picture came through. Here are more if I am successful.

[davomoto]

Larry, looking good! And being in Pasadena, you don't have to worry about putting her away for the winter!

davomoto