SOHC.co.uk Forums > CB750

Vapour blasting

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Trigger:
O dear, I hope you never had the head basted with the valves in ?

Dazza215:
I am replacing the valves but didnt want the seats ruined.

Trigger:
Cheaper to reface the valves and regrind the seats than new valves, what is wrong with the valves ?

Dazza215:
They were covered in sandstone from the American desert i think.
I thought thats what you were referencing with your last comment.
Why would you not have the head blasted with the valves in? Surely with the valves in it will protect the guides and the seats etc?

Trigger:

--- Quote from: Dazza215 on April 20, 2017, 05:02:42 PM ---They were covered in sandstone from the American desert i think.
I thought thats what you were referencing with your last comment.
Why would you not have the head blasted with the valves in? Surely with the valves in it will protect the guides and the seats etc?

--- End quote ---

If the blaster knew what he was doing, they would have put bungs in to protect any machined surfaces

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