piston ID

  • jus1975
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01 Jan 2011 21:25 #419678 by jus1975
piston ID was created by jus1975
I need help id-ing some pistons I got awhile back on ebay. I was told the two sets where 1325 and 13--. And I have no idea how to determine the Compression ratio.

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01 Jan 2011 21:31 #419680 by APE Jay
Replied by APE Jay on topic piston ID
Not going to be able to help you without more info or photos. Is there any name on the piston?
www.KZzone.com

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01 Jan 2011 21:43 #419681 by stonemaster
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get a set of calipers and measure the second set,

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  • jus1975
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01 Jan 2011 22:01 #419685 by jus1975
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my calipers are loaned out. I have a set thats not that clear to read but it looks like they are 77mm and it says arias underneath. the other is 78mm with no id that i can read. ill take some pics tomorrow.

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02 Jan 2011 23:55 - 02 Jan 2011 23:57 #419839 by APE Jay
Replied by APE Jay on topic piston ID
If we are talking about a KZ motor, 77 is 1230cc and 78 is 1260cc

Are wou measuring them at the bottom of the shirt, 90° from the pin bore?
www.KZzone.com
Last edit: 02 Jan 2011 23:57 by APE Jay.

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  • jus1975
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03 Jan 2011 11:45 #419868 by jus1975
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no across the top. I take it thats where I need to measure. So i will do it again

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06 Jan 2011 18:16 #420428 by jus1975
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here are some pics.
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06 Jan 2011 20:06 #420451 by kawsakiman
Replied by kawsakiman on topic piston ID
they sure look like 12.5:1 slugs to me.
someday i will be able to afford my kz habit.

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06 Jan 2011 20:35 #420456 by APE Jay
Replied by APE Jay on topic piston ID
Next to last photo looks like an Arias forging.
www.KZzone.com

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