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Post  Cribbs74 Mon Aug 12, 2013 12:39 pm

I have looked, but do not see any posts about removing burnt castor on the external engine. I have a couple engines (non Cox) that have been really hot and the Castor has burnt into a hard Carbon around the head and cylinder. So far I have been soaking in alcohol and scraping (carefully) with a dental pick. This works, but is very tedious and time consuming. Is there a chemical that is engine safe that will dissolve the carbon?

Ron
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Post  duke.johnson Mon Aug 12, 2013 1:11 pm

I've always heard, a old (not for food) crock pot with the old green glycol anti freeze and heat it up. and leave it a day or two. I'm going to try it soon.
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Post  dckrsn Mon Aug 12, 2013 1:29 pm

Ron, on older and bigger non-Cox engines I use a small brass wire brush.
After a long soak in Hoppe's #9, I brush all the unfinished
cast surfaces. That's just about the whole exterior on an
older engine. Cleans them like new.
Don't know what it might do to a machined surface.
Bob

http://www.grainger.com/Grainger/TOUGH-GUY-Wire-Brush-10D449?Pid=search
Removing carbon Brush10
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Post  SuperDave Mon Aug 12, 2013 2:11 pm

Bob mentioned the Hoppe's #9 Gun Cleaning solvent for such cleaning tasks!

(I have said that so many times that I've grown weary of mentioning it.)  Laughing  Laughing 

SD   sleep


Last edited by SuperDave on Mon Aug 12, 2013 4:20 pm; edited 1 time in total
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Post  dckrsn Mon Aug 12, 2013 2:17 pm

Removing carbon Hoppe_10
Makes a great dessert topping too.
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Post  Cribbs74 Mon Aug 12, 2013 2:44 pm

Lol, you guys are funny. Hoppes makes a little bit of sense as it cleans carbon off of guns.

I suppose I could break down and buy some. The carbon is localized to the external head and crankcase. The internals look pretty. OS FP.40

Ron
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Post  SuperDave Mon Aug 12, 2013 4:25 pm

lol!  And it could be used as a laxative also.    Laughing  It would FLUSH you right out!

SD
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Post  dckrsn Mon Aug 12, 2013 6:14 pm

SuperDave wrote:lol!  And it could be used as a laxative also.    Laughing   It would FLUSH you right out!  
SD
Carbon and all!Embarassed 
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Post  andrew Mon Aug 12, 2013 8:51 pm

duke.johnson wrote:I've always heard, a old (not for food) crock pot with the old green glycol anti freeze and heat it up. and leave it a day or two.  I'm going to try it soon.
+1

It can really work wonders, but if you leave it for too long, it will dis-color some aluminum. Clean-up is with a toothbrush and soapy water, but be sure to oil well immediately after cleaning.
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