JeffJeffers
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| posted on 7/12/10 at 09:44 AM |
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Shot blast valves
I'm part way through my engine re-build. I have had the head cleaned but there is a lot of carbon on the valves. I have left them soaking in
some degreaser over night but that didn't really help.
Someone told me I can shot blast them. Is this a good idea or will it damage the vales?
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RazMan
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| posted on 7/12/10 at 09:51 AM |
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Alluminium oxide or soda might be kinder to the valves - I think shot is a bit too harsh and you will peen the mating surfaces - in any case you will
need to grinf them in again to be sure.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Agriv8
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| posted on 7/12/10 at 09:53 AM |
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pillar drill and some emmery cloth did it for mine.
Valve stem held in a peice of fuel pipe to stop the chuck marking the valve.
regards
agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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JeffJeffers
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| posted on 7/12/10 at 11:02 AM |
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What about some oven pride?
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matt_gsxr
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| posted on 7/12/10 at 12:22 PM |
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oven cleaner is supposed to be good for carbon.
not so sure what it might do to aluminium though.
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adithorp
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| posted on 7/12/10 at 04:41 PM |
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I have always used a scaper on them followed by a wire wheel. Use the edge of the scraper to tap the carbon if it's thick and often it'll
crack off fairly cleanly, then scrape the rest and finally wire brush.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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matt_gsxr
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| posted on 23/3/11 at 07:09 AM |
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I know this thread is dead, but Cillit Bang Oven Cleaner is no use for this at all.
Just tried it over night.
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