Piston cleaning

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Piston cleaning

Post  72mav on October 6th 2014, 11:33 am

Hi everyone,
Whats a good blasting media that WILL NOT remove the aluminum. Just the oxidation. Damn Mice got in the box....
Thanks.
Al
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Re: Piston cleaning

Post  DanH on October 6th 2014, 11:39 am

baking soda

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Re: Piston cleaning

Post  gt350hr on October 6th 2014, 11:43 am

+1 stay away from glass beading . Walnut shells would be the only other "blasting material" I would consider. Baking soda is the best.

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Re: Piston cleaning

Post  dfree383 on October 6th 2014, 11:48 am

Scotch bright
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Re: Piston cleaning

Post  72mav on October 6th 2014, 11:51 am

If Im left with corrosion scars beloww the surface, will that still be okay?
Thanks.
Al
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Re: Piston cleaning

Post  dfree383 on October 6th 2014, 11:54 am

How bad is it? Post some pics.
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Re: Piston cleaning

Post  Lem Evans on October 6th 2014, 11:58 am

It'd be best to tape up the ring lands and pin bores.....just blast the skirts and top.

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Re: Piston cleaning

Post  72mav on October 6th 2014, 12:01 pm

Lem Evans wrote:It'd be best to tape up the ring lands and pin bores.....just blast the skirts and top.

Thanks Lem that's what I'll do. If there is a little mark left. It will just hold more oil! Laughing
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Al
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Re: Piston cleaning

Post  bbf-falcon on October 6th 2014, 2:34 pm

i remember a few yrs. back Harold made rhe mistake of setting 2 of his in muratic acid for cleaning,that was a nono.i was a little concerned when i assembled it but,it turned out ok.

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Re: Piston cleaning

Post  gt350hr on October 7th 2014, 10:40 am

The sides of the ring lands are not as critical as the bottom of the ring groove ( where the compression sealing is done). The lands can be rubbed on with scotchbrite and not harm them. Wash thoroughly afterwards.

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Re: Piston cleaning

Post  72mav on October 7th 2014, 8:12 pm

Ive found that a5o/50mix of acetone and transfluid makes the best penetrant bar none. Ive done wonders with it.
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