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Thread: 99 SI project.

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  1. 12-22-2009, 05:50 PM #1
    zracin
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    Would the cylinders need to be sleeved, or is 300hp within the threshold of oem bore?
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  2. 12-22-2009, 06:05 PM #2
    SleeperWRX
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    Quote Originally Posted by zracin View Post
    Would the cylinders need to be sleeved, or is 300hp within the threshold of oem bore?

    The cylinders can hold it, but to be safe, sleeve them. JJspec is on their stock block in their 450whp D series...



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