SOHC.co.uk Forums > Project Board
CB 500 resurrection
Oddjob:
Cases are machine paired, if you use one you must use both, so either 500 cases or 550 cases. Not a mix and match scenario.
The damage however isn't critical, you'll just get chain lube thrown onto the oil pump with that damage.
Difference in gearbox, selector mechanism, no upper shift drum stopper, different clutch, different clutch casing, different primary drive gear and those are just what I can remember right now.
gary123:
OK thanks for that. Ill have to think about which way to go.
gary123:
Im going to stick with the 500, trouble is I just keep hitting problems/damaged parts. [ Guests cannot view attachments ] [ Guests cannot view attachments ]
Oddjob:
TBH the selectors look toast. All have got some burning/rubbing marks.
What do the 550 ones look like?
The 550 uses a different set of fork selectors so you can't mix and match those either.
I'm still concerned about the shiny side to the journal tower. Yes, they are machined like that from the factory BUT they shouldn't still be shiny. I have 3 sets of cases apart right now and all are dull and oil stained, that's normal. That looks like it's just been done which is why it concerns me a little. I'm betting the 550 cases won't look like that. Also by the number of very small holes in the casings I'm betting something broke or wore really bad in those cases and flung little bits all over the inside. Look at the webbing right at the front of the close up pic of that shiny area, loads and loads of strike hits showing.
Try and take a pic of the bottom case, showing the inner side and top down. It's likely the primary chain has been rubbing on the oil gallery.
gary123:
--- Quote from: Oddjob on August 04, 2022, 08:28:23 PM ---TBH the selectors look toast. All have got some burning/rubbing marks.
What do the 550 ones look like?
The 550 uses a different set of fork selectors so you can't mix and match those either.
I'm still concerned about the shiny side to the journal tower. Yes, they are machined like that from the factory BUT they shouldn't still be shiny. I have 3 sets of cases apart right now and all are dull and oil stained, that's normal. That looks like it's just been done which is why it concerns me a little. I'm betting the 550 cases won't look like that. Also by the number of very small holes in the casings I'm betting something broke or wore really bad in those cases and flung little bits all over the inside. Look at the webbing right at the front of the close up pic of that shiny area, loads and loads of strike hits showing.
Try and take a pic of the bottom case, showing the inner side and top down. It's likely the primary chain has been rubbing on the oil gallery.
--- End quote ---
Yes forks are toast. The 550 ones are a bit better but I don't really want to use that engine.
The 550 cases look the same ie shiny, the picture at the top of this page is the 550.
I agree something went really wrong with this engine in the past,
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version