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-   -   Engine Build - Rear Freeze Plug (https://www.miataturbo.net/engine-performance-56/engine-build-rear-freeze-plug-110599/)

belacyrf Aug 16, 2025 04:28 PM

Engine Build -Benefits of Sleeving / Downsides
 
Hey all..so I'm changing the title of this thread b/c I dont think too many people have encountered what I've encountered. So I'm asking a different question... It's likely that I've damaged the outer cylinder wall of my #4 piston when trying remove the rear freeze plug. So if the outer cylinder damage is sufficient to warrant concern, I will be looking at sleeving the cylinders. Are there downsides (other than cost) to sleeving the cylinder?

Here is where I suspect the damage is.. you can see I tried to use a carbide grinding bit and likely have no space behind it.
https://cimg2.ibsrv.net/gimg/www.mia...6844b67afe.jpg
https://cimg3.ibsrv.net/gimg/www.mia...465c4cad69.jpg


Let me know your thoughts about cylinder sleeves.
Thanks


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