FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
In Other News . . .
You will notice a few enchancements to the forums to make your experience better. These include: Email Notifications, Thread Previews, Thread Starter Notation, and Emoji Options on the 'Like' icon. . .
Additionally, the merchant portions of the website have been updated and are now operational. . . . Check out iBoats for all your boating gear.
I am looking for some professional advice. I have an 1989 or so 150 mercury. It has been on the boat for two years and was steady at 140deg, at 5800 rpm... Now at 3000 I get 180deg. If I go beyond that it will hit 200deg at WOT. I have changed so far ..... Impeller, Poppet valve...