SOHC.co.uk Forums > CB500/550

Getting top end vapor blasted. Leave valve guides in?

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alexdecker:
Hey all

I have my bottom end completely split apart for vapor blasting soon. I wanted to have the top end vapor blasted as well, so I am taking out valves etc. I heard the valve guides are quite troublesome to remove yourself.

Can I leave them in when getting in vapor blasted? To my knowledge, that should be the only thing that could cause trouble?

Oddjob:
Leave them in. Just blow them clear afterwards.

alexdecker:
Good man. Just the kinda answer I was hoping for  :)

Trigger:
The head has to be stripped completely apart from the guides as it is glass bead and one bit of bead will destroy your engine. The blaster should have rubber bungs to put in to protect the inside of the guide. Also on the 500/550 head there is a main oil channel that runs under the cam journals, the plugs on each side of the head need to be removed so, this channel can be cleaned after wards. New plugs can be easy made on a lathe out of alloy and pressed in  ;)

Oddjob:
If you remove the guides Alex your going to need to recut the valve seats, whilst it's true you need to remove everything the exception is the guides. Be sure though that the small metal spring seats at the bottom of the valves has been removed, use a magnet to suck them out.

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