12-08-2010, 08:44 PM | #1 |
Doin' the Wild Thang
Join Date: Mar 2010
Location: Greenville, AL
Posts: 1,063
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Aluminum on crank
Hey guys, just making sure I had this right. Didn't I read a post here sayin' you could use muriatic acid to clean aluminum off the crankshaft. I gotta 295 I'm building and the rod has left some deposits on the crank I need to get off.
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12-08-2010, 08:58 PM | #2 | |
nimda
Join Date: Jun 2007
Posts: 13,022
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Re: Aluminum on crank
Quote:
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12-08-2010, 09:03 PM | #3 |
Doin' the Wild Thang
Join Date: Mar 2010
Location: Greenville, AL
Posts: 1,063
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Re: Aluminum on crank
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12-08-2010, 09:08 PM | #4 |
friends call me Boke
Join Date: Apr 2008
Location: Smithfield, North Carolina
Posts: 7,772
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Re: Aluminum on crank
don't take a wire brush to it whatever you do, use the muriatic acid (with rubber gloves on) and a green scotch brite pad and it'll take off the aluminum. I've done it several times to banshee cranks....promise. It may take a few times, if you still see black on the crank journals, it's aluminum. Watch your eyes too.
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12-08-2010, 09:21 PM | #5 |
Respect the Cart
Join Date: May 2010
Location: Rocky Mount, Virginia
Posts: 2,190
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Re: Aluminum on crank
Muriatic acid is the ancient name for Hydrochloric acid one of the most vicious acids. Normally produced at a maximum strength of 38% . A major use of HCl is "pickling" steel which is the process of immersing rusting steel and using the acid to remove the ferrous oxide. In this case the solution used is 18%. You would need to determine the correct solution to disolve aluminum and dilute your acid accordingly. As any chemistry high schooler knows, pouring water into acid is a recipe for a nasty reaction.
It's your world but I would steer clear of anything that brought me close to Hydrochloric. I think maybe a light scrub with some 1000 grade steel wool or maybe a pan scrubber perhaps. Just another $0.02 |
12-08-2010, 09:36 PM | #6 |
Gone Wild
Join Date: Sep 2010
Location: Decatur,IL
Posts: 553
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Re: Aluminum on crank
Muratic axid is only about a 5 or 10% solution. Brick masons have used it for years to clean bricks after laying them. Bokes is right, BUT BE CARFULL wear safety glasses , rubber gloves , and a face mask. We use to wash our hands with muratic acid to get grout and cement off, Sure stings any open cuts, but makes your hand squeaky clean, BUT DO NOT TRY THIS OUT HOME, WASH DONE BY TRAINED MORONS, err masons.
2cycle races also use it to clean cylinders after seazing pistons. |
12-08-2010, 11:01 PM | #7 |
Not Yet Wild
Join Date: Oct 2010
Location: Canada eh!!!!
Posts: 60
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Re: Aluminum on crank
Muriatic is weak HCL but still can create problems so wear you PPE when using it.
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12-09-2010, 07:19 AM | #8 |
Doin' the Wild Thang
Join Date: Mar 2010
Location: Greenville, AL
Posts: 1,063
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Re: Aluminum on crank
Thanks guys... I have used it to remove rust inside of a gas tank on many atv's. I appreciate the concern with all the safety precautions and I thank you all for the info. on the problem. I'm gonna try it today.
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12-09-2010, 07:36 AM | #9 |
Gone Wild
Join Date: Aug 2009
Location: Santuck,Al
Posts: 1,747
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Re: Aluminum on crank
Hey ez,is that a "local" 295 you're working on
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12-09-2010, 08:37 PM | #10 |
Doin' the Wild Thang
Join Date: Mar 2010
Location: Greenville, AL
Posts: 1,063
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Re: Aluminum on crank
You could say that MULE!!!! Long time no see, good to hear from ya brother!!
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