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Hence, if you bore the engine, the silicon liner will be gone and you would not get the benefits of the reduced friction between the cylinder wall and pistons. But I'm guessing this will still work. Detailed info here http://www.pca.org/tech/tech_qa_question.asp?id={F3EA752A-E838-43E5-A43D-BB4F445F5A8F} |
tqtran: Logically I agree that you probably can't bore out the Lokasil 986. These engines have exotic aluminum/silicone blended cylinder sleeves that are optimized to improve wear in a relatively thin area of piston wall. You bore through the sleeve area and you are left with aluminum that will wear out in a few thousand miles. You may be able to hone a few thousands and be left with a good surface, but the .25 inches or more needed to significantly improve displacement probably moves your piston wall out of the exotic alloy territory and into the high wear zone.
I don't KNOW you can't bore a Boxster engine, but it doesn't seem like you would get very much engine life if you did bore it. * * * Take a look at the Boxster Preform on page 4 to see what I mean about the Lokosil Sleeve http://www.kolbenschmidt.de/pdfdoc/dg_e.pdf |
I am back to my basic premise, that is, get an S and play with breathing and exhaust. Or, get a 911 Turbo (I can help if that is the way you want to go!).
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No wonder most are opting for the 996 engine conversion. Meanwhile, does anyone know whether the 996 3.6l block will fit into the Boxster? I know the 3.4l is of the same block but not too sure about the 3.6l ones. However, companies like Techart are still boring out the 3.2 to 3.7l ones! I wonder about the longevity of the engine in those cases.... Unless there's a disclaimer from Techart requiring engine rebuilts every 10k miles? :) |
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