Topic: What's this part for?? (1980 CB650C oil passage)

[ABikeNamedTrouble]

It's #2 on thishttp://www.bikebandit.com/houseofmotorcycles/1980-honda-cb650c/o/m1977#sch16289  diagram.  Listed as an oil passage cap.

A cap I obviously understand, but does anyone know what the passage itself is for??

[scunny]

I think(dangerous pastime) that passage was just part of the machining process, and then plugged.

[ABikeNamedTrouble]

Thats what it seemed to me as well.  I thought I'd ask since I had a bad oil leak from that cap (seeping out the bottom of my alternator cover).  Hondabond4 seems to have remedied the situation.

[bryanj]

Its very difficult to drill a hole when you need solid metal at both ends!!

Consequently you need the cap to seal the hole----did you notice it is supposed to have an "O" ring on it? Also if you run the engine with the generator cover off it will disapear into the darkest, most inacessable place arround whilst leaving behind an expanding puddle of oil