Polishing Alum. intake manifold.

Hey guys,
Odd one here, I had a upgrade to a client who went to a blower from a
sheetmetal intake as he changed racing classes to pro-mod (No blowers or
turbos) Anyhow I took in a real nice sheetmetal intake bartered into his
rebuild for '05
The manifold looks weathered but it is very, very solid. I hit the
runners and easy spots with a knotted wheel but is there an acid dip or
other method other than tooth-brush cleaning with Mother's, other chem. Any
ideas gents... I don't want carpal tunnel from cleaning it as it will be a
high resale item or I'll use it on a project someday. I just want it to look
good.
Thanks in advance,
Rob
Reply to
RDF
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Look up electro polishing, it is used on many types of metals including reflectors made of aluminum.
Reply to
Mickey
Thanks Mickey, I looked into it and there is really nothing in Chicago surprisingly enough that offers the service. Is this a "tried and true" method. I did note the anode /cathode removed material and a leak on a manifold would be disastrous on the dyno not to mention the track (If you ever saw a 1600+hp engine come apart and explode in a dyno booth you get an instant appreciation for halon and a sealed chamber! It shattered 3" of glass into the control booth) I understand any polishing will remove base material and I'll need to NDT the entire thing before putting it into service. Is this method worse than a caustic bath or even a trip to the nutshell blaster as a softer media? This is a totally new thing for me, I usually acid scrub and wire brush before welding but this is a maze of runners, bungs, bla,bla,bla....
Thanks, Rob
Reply to
RDF
Electro polishing is a proven method never used it for your application. I have seen it turn a dull aluminum into a mirror finish. If there is not anything local I would go with what you can get done locally. There are so many grades and types of aluminum that you need to test a process to see what you are going to get.
Reply to
Mickey
Try to contact these folks in the Chicago Area
In Chicago
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In Elk Grove Village
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In Hampshire IL (near Rockford)
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I've never used any of them, but I know one of my customers has
Reply to
Gjpostma
I'm still waiting for a quote myself. No one called back today. I E-mailed them three photo's and dimensions.
Rob
Reply to
RDF
They don't want "piece work" apparently. The rep's reply indicated they traditionally only supply something to the effect of a mirror like finish.... Out comes the Rollock's & Mother's
Shit!
Reply to
RDF

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