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Reads low compression. Help!!!

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  • Reads low compression. Help!!!

    I have a 95 640 daytona. Compression tester could be wrong but it read 90 on the mag cyl and 120 on the PTO side. Do you need to pull the whole engine to replace the rings? Engine runs and starts good and feels strong. Where does the rev limiter kick in? If you put in new rings will the bottom end go out? New guy all help please.

  • #2
    Re: Reads low compression. Help!!!

    Its easier to pull the engine to work on it, the cylinders need to come off and I would hone it if thats the only thing it needs then re-ring. If the cylinders are too worn then it will need to be bored out.
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