CB650C Project from P. I. Needs help of a brethren..

Please post your bike pics here

Moderators: Volker_P, tidd650

jagans
Posts: 30
Joined: Thu Aug 08, 2013 10:51 pm

Re: CB650C Project from P. I. Needs help of a brethren..

Postby jagans » Mon Aug 26, 2013 7:47 am

Great Pictures. What are you going to do about those cam journals? They aint lookin too good. By the way, if anyone needs some tight shots of the carb linkage re the choke shafts let me know, I took some tight shots before I took mine apart for dipping. Cheers.

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Volker_P
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Location: southern Germany

Re: CB650C Project from P. I. Needs help of a brethren..

Postby Volker_P » Tue Aug 27, 2013 2:36 am

As said no drain holes for the oil gallery.

Valve seats are very close specs. So better don't swap old valves in old seats.
Also valve stems might get thicker at the top due to the "hammering" during operation.
Also working with tools in th retaine region may have some small effect.

So valves have to run free in their operating position while putting them in/out may cause some trouble. Nothing to worry but to be careful. It is a good idea to sand the top of a valve stem a bit instead of pulling a valve out with force if necessary.

No idea what the cut valve stem seals are for. Probably no good idea if they may hit the normal valve stem seals. A good idea in any case is new valve stem seals however.
Cosky's great (free) online manual: http://cosky0.tripod.com

forum links to common technical issues

MiGhost
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Joined: Tue Jun 07, 2011 2:30 am
Location: South Central Mitten

Re: CB650C Project from P. I. Needs help of a brethren..

Postby MiGhost » Tue Aug 27, 2013 9:14 pm

Bongskit wrote:Image

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Great pics. Thank you.

Volker_P wrote:As said no drain holes for the oil gallery.


In the pic of the center cam journals/valve pockets you can see the holes in the sides that drain the oil back to the cam chain area. These holes line up with the outer two plugs in the outside ends of the casting. The center plug is the oil supply for the cam journals.

Ghost
~ Ghost

PD50 Carb Info
82 CB650SC Brake Caliper Info

Stable
Wayward Son:1980 CB650C, RestoMod Period Custom Touring
Bad Moon: 1983 XJ750MK Midnight Maxim, Full Dress Tour Deluxe w/ X-1 Fairing
Nemesis: 1983 XJ750K Maxim, Old School style chopper

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Bongskit
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Fri Aug 30, 2013 7:53 pm

Wild Chili's powerplant

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Is this engine support bolt/hanger removable? I tried to pound it a few but it won't budge. It doesnt looks like it is welded. It turns though.

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MiGhost
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Location: South Central Mitten

Re: CB650C Project from P. I. Needs help of a brethren..

Postby MiGhost » Mon Sep 02, 2013 9:27 pm

Bongskit wrote:Is this engine support bolt/hanger removable? I tried to pound it a few but it won't budge. It doesnt looks like it is welded. It turns though.


Yes. That collar, and bolt are removable. The collar is siezed to the bolt. You will need to soak them with penetrating oil. then either heat the collar, or place a nut on the threaded end of the bolt, and pound it through the collar.

Ghost
~ Ghost

PD50 Carb Info
82 CB650SC Brake Caliper Info

Stable
Wayward Son:1980 CB650C, RestoMod Period Custom Touring
Bad Moon: 1983 XJ750MK Midnight Maxim, Full Dress Tour Deluxe w/ X-1 Fairing
Nemesis: 1983 XJ750K Maxim, Old School style chopper

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Bongskit
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Mon Sep 02, 2013 9:32 pm

Work in progress....

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usbear
Posts: 361
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby usbear » Mon Sep 02, 2013 9:52 pm

Wild Chili Skelator

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Bongskit
Posts: 160
Joined: Tue Mar 05, 2013 8:08 pm

Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Thu Sep 05, 2013 5:27 am

Power plant fully dissected now. let me know if there is anything you wanted to see up close while everything is out in the open. i will snap a pic.

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Bongskit
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Sun Sep 08, 2013 8:05 pm

Done! Time to strip the paint!

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Bongskit
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Mon Oct 07, 2013 9:19 pm

paint stripping. i hate it! uggh! no blasting but I am starting to think I should invest in one. Nooks and crannies still needs more work

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MiGhost
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Location: South Central Mitten

Re: CB650C Project from P. I. Needs help of a brethren..

Postby MiGhost » Mon Oct 07, 2013 10:30 pm

I see that you removed the bearings in the wheels to strip them. I am going to assume that you plan on using new bearings when reassembling. Make sure that you flush any traces of the striping chemicals off from the wheels. They could possibly weaken the material around the rivets over time.

What color scheme are you planning on for the rebuild?

Ghost
~ Ghost

PD50 Carb Info
82 CB650SC Brake Caliper Info

Stable
Wayward Son:1980 CB650C, RestoMod Period Custom Touring
Bad Moon: 1983 XJ750MK Midnight Maxim, Full Dress Tour Deluxe w/ X-1 Fairing
Nemesis: 1983 XJ750K Maxim, Old School style chopper

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Bongskit
Posts: 160
Joined: Tue Mar 05, 2013 8:08 pm

Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Tue Oct 08, 2013 6:51 pm

black, silver and polished. cant really switch the major color to anything that you like here(black) coz the registration includes color. you can but have to run into a scheme of bureaucracy in the system. lots of work just for the color.

yes I am replacing every bit of wheel bearing and seals in this machine.

speaking of bearings. are those tapered neck bearings(triple tree) really are bolt on and will not run into problem fitting in?

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Bongskit
Posts: 160
Joined: Tue Mar 05, 2013 8:08 pm

Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Fri Nov 01, 2013 6:50 pm

Hey everyone! I thought I should post an update. Well, everything is still in pieces.

But got the case all cleaned up! Bought myself a powerful compressor that allows me to do the blasting myself. I guess I am going to learn a lot of how to use it in other stuff.

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Why the two tone shade? I have been messing around with 2 medium. Soda and sand. I guess you already know which is which. :D


Word up to usbear! Keeping me company during downtime.

usbear
Posts: 361
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby usbear » Sat Nov 02, 2013 12:12 am

Well it IS coming along sir, Looking Good.
First we prep then we Play!

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Bongskit
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Re: CB650C Project from P. I. Needs help of a brethren..

Postby Bongskit » Thu Nov 14, 2013 5:20 am

ready for honing and cylinder head/valve job then paint. 8) I have many pictures but dont want to bore you with it. here are a few.

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