Reusing scrap

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Nikhil Bhale

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Hi,
I work in offshore oil industry and am stuck on job due to covid 19.
This is my 5th month going on here for original 45 days of duty cycle.
Anyways I have some questions to ask.
We recently overhauled two Yanmar engines and three CAT engines here and now have a lot of old parts as scrap.
I was wondering if some parts can be reused in home workshop for model making.
I was thinking specially about the valve guides. They are C.I. with 18mm ID and 30mm OD 200mm long. Can they be used to make cylinders for engines?
Also can the intake and exhaust valves be turned into something? they are probably chrome vanadium steel and I think it will be difficult to machine.

Thanks
Nikhil
 

deverett

deverett
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I also used to work in the offshore oil industry.
I liberated many pieces of scrap metal, mostly non ferrous, but also steel bits that would come in handy; anything that would fit in my bag.
Worn bronze valve stems, bumper sub spline bushings were always good. The best I ever got was a BOP wear bushing - I had to saw it down because it was too heavy to carry in home in in the helicopter in one go. Still got plenty left for more bearings!

Dave
The Emerald Isle
 

awake

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Nikhil, those CI valve guides would be perfect for making a cylinder sleeve for many model engines! Don't know what steel the valves are, but I would certainly take them home to try them out.

What part of India? I've only ever been to the south (Kerala), but enjoyed my visit there very much.
 

Tim Wescott

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I'd check to see if the exhaust valves are sodium cooled, and not bother with them if so.

An 18mm diameter stick of good steel isn't to be sneezed at (assuming the OD of the valve matches the ID of the sleeve). I think I'd try annealing and then machining -- at worst you've taken something with no value and made it into something with no value, and learned something in the process.
 

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