79 CB650 tank on 81 CB650C

If it's broken or just needs tweaked

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bcon615
Posts: 4
Joined: Fri Aug 12, 2016 12:24 pm

79 CB650 tank on 81 CB650C

Postby bcon615 » Tue Aug 30, 2016 7:41 am

Hey everyone, I recently purchased a 81 CB650C which had a seized engine and no gas tank. I would like to start a build thread on here to share everything I possibly can with you guys. But first I have a quick question: Will a 79 CB650 tank fit on my 81 CB650C?

I will soon get around to posting pictures. I have already removed the engine and started tearing it down.

- Thanks everyone

bcon615
Posts: 4
Joined: Fri Aug 12, 2016 12:24 pm

Re: 79 CB650 tank on 81 CB650C

Postby bcon615 » Tue Aug 30, 2016 10:14 am

So here is a picture from when I bought it:

Image

And here it is in its current state:

Image

I just put the seat and shocks on to get an idea of how the bike is coming along. This is obviously going to be a brat/cafe build.

bcon615
Posts: 4
Joined: Fri Aug 12, 2016 12:24 pm

Re: 79 CB650 tank on 81 CB650C

Postby bcon615 » Tue Aug 30, 2016 10:33 am

Next, I started trying to get the engine apart so I could see what was causing it to be seized:

Image

As you can see the piston closest in the picture was surely the cause of the problem. And here is what the cylinder for that piston looked like:

Image

The piston rings are also pinched tight in their grooves:

Image

Hawk213
Posts: 70
Joined: Fri Oct 18, 2013 2:20 pm

Re: 79 CB650 tank on 81 CB650C

Postby Hawk213 » Tue Aug 30, 2016 11:46 am

I don't know the answer to your question but is that how you're leaving seat? Cringes at the hump. Lol. I'm sure it'll come along nicely though. Good luck.

bcon615
Posts: 4
Joined: Fri Aug 12, 2016 12:24 pm

Re: 79 CB650 tank on 81 CB650C

Postby bcon615 » Tue Aug 30, 2016 1:31 pm

I don't know the answer to your question but is that how you're leaving seat? Cringes at the hump. Lol. I'm sure it'll come along nicely though. Good luck.

Hahaha! At least I can say it would be unique if I left the seat like that wouldn't it?


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