 Removing old sealant from case, What's the best way to remove case sealant? |
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| lonewolfe |
 May 6 2014, 04:08 PM
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#1
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Senior Member  Group: Members Posts: 819 Joined: 12-September 11 From: Oakland, CA Member No.: 13,549 Region Association: Northern California  |
I have a couple of engine cases I've been cleaning up in preparation to build. What's the best way to remove old case sealant? I believe the old sealant is most like Curil brand. I've tried carb cleaner, alcohol, mineral spirits and lacquer thinner and none of these seam to do much. Should heat be used? Tell me what has worked best for you? One case was built by someone who used way too much and is ran all over both the inside and outside of the case halves.
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| Hawker |
May 6 2014, 04:14 PM
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#2
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Newbie Group: Members Posts: 10 Joined: 11-February 14 From: Santa ynez Member No.: 16,988 Region Association: None |
Asatone or goof-off works well !
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| wildman |
May 6 2014, 04:20 PM
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#3
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Newbie Group: Members Posts: 34 Joined: 24-May 11 From: Oklahoma City, OK Member No.: 13,112 Region Association: Southwest Region |
My generic solution to removing sealants from machined surfaces (can't guarantee it will work on curil) is to scrape the globs off very carefully so as not to gouge the surface. once the large gobs are gone I spray aerosol carb cleaner onto a small square (2"x2" or so) of red scotchbrite until it is dripping wet and use that to scrub, It seems to clean off all sealant and oxidation without being so aggressive as to removing metal. I'm not sure why but the red seems to work a lot better than the green.
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| r_towle |
May 6 2014, 04:26 PM
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#4
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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a razor blade held straight up like a scraper.
rich |
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| Jon H. |
May 6 2014, 07:21 PM
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#5
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Member Group: Members Posts: 237 Joined: 1-July 11 From: Ottawa, Canada Member No.: 13,264 Region Association: Canada |
I use a rubber type of grinding wheel on my die grinder. The bristles are made of rubber and will not remove any metal. I use it to remove all of my gaskets from everything.
Its like this Rubber Disc It was pricey, ($20 or so) you have to get the mount and the disc. I got it at the local NAPA. Regards Jon |
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