Author Topic: meteor big bore kit for 440 magnun  (Read 683 times)

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Offline brokenbudget

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Re: meteor big bore kit for 440 magnun
« on: November 05, 2013, 09:28:12 am »
stick with the stock topend. it will make more power everywhere compared to an aftermarket kit regardless of the bigger bore. i'd check your compression tester before coming to the conclusion your comp is low.
another thing to look at is the thickness of the cylinder gasket. too thick will lower the compression.
the 440 after a muffler mod is a smoking strong saw. no need to ruin it with questionable parts. it's worth putting oem on it. and there isn't any reason to question the quality.

another thing to also look at is the piston. it might look fine, but it may very well be out of spec. and letting some comp pass by regardless of rings. if you can't see the 'machine' marks, it's probably time to replace it. these saws like to fit snug.
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