1980 CB750K Rebuild, Making it a learning process

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1980 CB750K Rebuild, Making it a learning process

jkchubbes
Hello, new here.  I picked up this 1980 CB750K last year with plans to rebuild it into a cafesque, brat bike.  I'm using at as a learning tool with my limited mechanical skills.  I've tinkered with diesels and my cars but nothing major and nothing with motorcycles.  



When I bought it I got it to run but it had a decent tap in the low end, I adjusted the cam tension and it got better but still had a tap.  Shortly after that the starter switch quit working.  Now I've decided I will replace the wiring harness as it is thrashed and rigged in a few locations.  This last week I received my Clymer's manual and began tearing the motor apart along with other things I plan on replacing or leaving out.





When I pulled the oil filter I found a good amount of metal shavings, so tearing into this motor will reveal how bad it is.



Looking through some similar projects on here has got me wondering a few things, where do you hide the battery?  And If I were to go with rear sets, is the bracket for the passenger pegs and exhaust mount still required?  I have little to no fabrication skills so alot of that is going to be with alot of help from here and from friends of mine.
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Re: 1980 CB750K Rebuild, Making it a learning process

Re-run
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Have you changed the oil yet? If so, what come out there? That would be a major location for shavings if indeed the engine is tearing itself up.

Does the tap change if you pull in the clutch? If so, then a carb sync will help. Keep in mind, this is an air cooled engine and will make noise no matter what. It just depends on the level of noise you currently have.

I don't know about rearsets but we have the shop manual here. Get it, much better than the clymer manual.

It is a pdf. Open it in the viewer and then save it.
The ride IS the adventure. The destination is just to get gas!
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Re: 1980 CB750K Rebuild, Making it a learning process

shinyribs
Administrator
Welcome to the forum.

Is that black silicone on the valve cover? These engine do no fare well at all with silicone. They have tiny little oiling passages that little balls of silicone will block completely in a heartbeat!

Good luck on your project. They are really very simple machines to learn,understand and work on. Just keep the silicone away from them.