Cracked piston...Good or Bad? - Team Camaro Tech
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post #1 of 7 (permalink) Old May 26th, 09, 05:10 PM Thread Starter
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Derek
 
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Cracked piston...Good or Bad?

I dropped this piston today - KB hyperutectic Part number KB122. It is cracked all the way through about 2-3 mm in length. I know I cannot install it like this but can it be saved or is it a paperweight? Thanks

http://i205.photobucket.com/albums/b...8/CIMG0759.jpg

Last edited by pro67street; May 26th, 09 at 06:09 PM.
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post #2 of 7 (permalink) Old May 26th, 09, 05:11 PM
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Re: Cracked piston...Good or Bad?

Paperweight.

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post #3 of 7 (permalink) Old May 26th, 09, 05:43 PM
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Re: Cracked piston...Good or Bad?

Quote:
Originally Posted by pro67street View Post
can it be saved

YES!.....It can be saved!....As a paperweight!
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post #4 of 7 (permalink) Old May 26th, 09, 05:56 PM Thread Starter
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Re: Cracked piston...Good or Bad?

Can you buy these individually? Most everywhere Ive checked so far have them advertised as a set of 8. This thing only fell approx. 2 feet...are hyperutectic pistons that brittle?

Last edited by pro67street; May 26th, 09 at 06:09 PM.
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post #5 of 7 (permalink) Old May 26th, 09, 07:06 PM
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Re: Cracked piston...Good or Bad?

If it only fell 2 foot I would not trust them.What kinda motor are you building. Actually your not suppose to drop them.

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post #6 of 7 (permalink) Old May 26th, 09, 07:42 PM
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Re: Cracked piston...Good or Bad?

Quote:
Originally Posted by pro67street View Post
Can you buy these individually? Most everywhere Ive checked so far have them advertised as a set of 8. This thing only fell approx. 2 feet...are hyperutectic pistons that brittle?
Yeah, kinda brittle. I'm sure it would have happened to a forged piston as well. Pistons are not designed to withstand the slap of a rod against the skirt.

Throw it away....if you bend it back, it's not going to be strait, you can weld it up, but it's gonna need balancing and then you will be taking a gamble using it. Do yourself a favor and buy a new one, balance it to the others and your good to go.

BTW....you should be able to buy a single piston. You just need to talk to the right guy.

Call THESE GUYS. And ask if there is a specific part number for a single piston LIKE THIS. They may not be able to sell to you directly, but they might be able to point you in a direction.

Hope this helps,

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post #7 of 7 (permalink) Old May 26th, 09, 07:47 PM
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Re: Cracked piston...Good or Bad?

Quote:
Originally Posted by pro67street View Post
are hyperutectic pistons that brittle?

yes, they are brittle, more brittle than forged pistons. i knew i learned something in my materials class, lol.

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