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Old 03-28-2013, 11:13 AM   #1
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SPI Piston Size

I went to order a piston, but they come in multiple "grades" according to Ford, which I'm assuming is sizes. Is there a way to measure for which size piston and rings I need?

I know about the 1.2mm vs 1.5mm difference, but am wondering about the bore size. I've had the car since 8,000 miles so I don't think it's been over bored or anything.

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