Steverino's CB77Splitting the Case to replace two studs.I had to take the motor partially apart this afternoon. I had to in order to replace those two studs that were twisted with fouled cap nuts. Maybe the guy that messed up the cam timing thought they would look nice since he had no engine cover. Seemingly innocent little "custom" touches like that sure can mess up a motor. Splitting the case gave me a chance to look inside. I checked all the way around the gears and they look good. No chips that I can see. Notice the splotch of paint on the mainshaft. I wonder what it means.
KIMG0813 by Steve Steverinomeister, on Flickr KIMG0841 by Steve Steverinomeister, on Flickr I turned the rotating assemblies and they felt smooth and quiet with no rough spots. Here is kind of a picture with a glimps of bearing and race. KIMG0823 by Steve Steverinomeister, on Flickr Here is the bottom half and the two studs. sI found no cracks or troublesome shards of metal. KIMG0810 by Steve Steverinomeister, on Flickr
Last edited by Steverino on Wed Oct 07, 2015 8:03 pm, edited 1 time in total.
Re: Splitting the Case to replace two studs.Steve
Good to see that you've got it apart. Those yellow paint marks, I think, are from the inspectors during manufacture, They are just marking that some important assembly operation or test has been done correctly. You used to see it on critical things like brake rotor bolts on later Hondas. It shouldn't really matter as your botoom case looks pretty clean but I take out those two steel oil separators at the front to just see if anything lurks underneath.... Anything that gets down there is pretty safe but it helps tell the story. G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F Engine Case Studs Arrived and Motor MountedThe studs arrived today so I was able to move ahead.
KIMG0853 by Steve Steverinomeister, on Flickr Here is the filter washer in the proper position. KIMG0789 by Steve Steverinomeister, on Flickr Here is the filter chain properly aligned. KIMG0791 by Steve Steverinomeister, on Flickr I was finally able to mount the motor. KIMG0868 by Steve Steverinomeister, on Flickr KIMG0869 by Steve Steverinomeister, on Flickr
Thanks Dick
I am real happy that it's looking like a motorcycle again. I did a static timing the other day. I used my continuity tester and set the points to break right on the F's. They were set quite a bit wider than .015 so I gapped them. I am looking forward to seeing how much better it will run with the cam lined up with the crank rather than one tooth behind. Thanks for suggesting to me to take a close look at the timing Loud Mouse. I am in a hurry to try the repro header pipes for fit. After reading what people have to say about them I have a feeling I am going to have my work cut out for me. Steve
If I use a screw, I cut a couple of slots along the length of the thread so that it traps the crud. G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
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