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Discussion Starter #1
I recently picked up my rods n pistons for my build but the buddy I bought them from said he wasn't sure what cc the pistons are. Theyre Ross Racing pistons .020 over, so I got on their website and see they only have 2 different cc pistons, 0 and -16. Mine are dished so I have to have the -16cc ones. What I'm getting at is what kind of compression ratio would these give with 99 cobra heads? I wanna say 9:1 but I'm not 100% sure if thats right. Can anyone help me out?
 

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Discussion Starter #3
Thanks man. So it'd be safe to say 8.9 would be my approximate CR. Will work good for my build.
 

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Discussion Starter #4
Oh and the pistons have the rings on them still. I wanna replace them but I'm not sure if its necessary. Do I have to?
 

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Discussion Starter #6
Ok I was pretty sure I'd need to get new ones. How about pins? Do they need replaced?
 
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