sucksqueezebangblow
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 posted on 6/3/08 at 02:11 PM |
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What finish for bead blasted engine casing?
Hi All,
I am about to bead-blast my engine casings (glass beads). Any tips? What finish will it need? Some sort of high temparature laquer? Or can I leave
them to oxidise naturally?
Also, any tips on blocking the various orifices (intake, exhaust etc.)?
Clive.
Better to Burnout than to Fade Away JET METAL ~ AndySparrow © 
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Phil.J
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| posted on 6/3/08 at 02:44 PM |
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Use a high temperature clear lacquer if bead-blasting. It leaves a finish that is a bit of a dirt magnet.
Have you considered something softer like walnut shell? it will give a smoother more polished finish than bead-blasting.
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Mr Whippy
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| posted on 6/3/08 at 04:46 PM |
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oh all that grit in the oilways, frightening 
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Fred W B
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| posted on 6/3/08 at 06:50 PM |
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As above, please don't consider blasting your engine without stripping it.
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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sucksqueezebangblow
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| posted on 7/3/08 at 11:26 AM |
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I'm planning on spot blasting it bit by bit at fairly low pressure, with all pipes and such sealed and still bolted in place to prevent bead
ingress, I have stuffed the inlet and exhaust ports with clean rag and sealed them with heavy duty tape and I will also be careful not to blast them.
It will be slow but should produce best results. I'll also test carefully on the sump casting first as that will ultimately be thrown away.
I appreciate the warnings though, bead ingress would be disasterous!
Better to Burnout than to Fade Away JET METAL ~ AndySparrow ©
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