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Sue Clark
Sue Clark Posted on Sep 09, 2019
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Upgrage 2006 8hp mercury outboard to 9.9 - Mercury Boating

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ruger browning

ruger browning

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  • Posted on Sep 09, 2019
ruger browning
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What are you trying to upgrade? Are you trying to get 9.9 HP out of your 8 HP or a new replacement motor?
Also, what is the boat that it is being used on and what is the maximum HP rating for the boat? Finally the most important questions..... Why? What are you trying to achieve with the upgrade? Will it be worth the time and money?

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  • Mercury Master 1,713 Answers
  • Posted on Sep 09, 2019
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Best not to do it as you will get maybe 2 mph. Also, I believe it is ******* to modify 1996 and later motors.

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