96 pistons in a 95 block - any issues? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-04-2008, 01:55 PM   #1
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Default 96 pistons in a 95 block - any issues?

Any fitment issues? Is there any change in compression to be expected (increasing or decreasing CR)?
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Old 10-04-2008, 05:11 PM   #2
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Depends.
Starting with the 3/95 start of the ODB-II implementation (VIN 14193) the pistons were changed with a slight dome to increase the compression ratio to an actual 9.0:1. The '94-3/95 pistons were factory rated at 9.0:1 but actually was around 8.8.

94 vs 96 piston
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