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Hi all, I have a 1986 Thompson bowrider 16 ft with a 2.5 liter MCM 120. It has a loud knock so I'm debating on going the lazy way out and replacing it with a 3.0, preferably a 140hp crate. Will it fit on my existing mounts and will all my old accessories fit? Does this seem like a good idea to...
Hi everyone! Was out cruising in my boat with the 1987 2.5L. It was running perfect for about a 45 min run at WOT. We anchored for about an hour and started heading back. We ran for about 15 minutes again at WOT then suddenly the RPMs dropped to about 3500. I didn't touch the throttle. It stayed...
Hi everyone! I just got a rebuild kit for my 2.5, 120 hp, carburetor PN: 13898490. It has a lot of gaskets, but I have an old rotted out gasket that's at least 1/4 inch thick that mates the carb to the engine. Does anyone know the PN to that gasket or where I can find it in the manual? I need a...
Hi Everyone! New to forums here. I have an '86 Thompson Bowrider 16 footer with the 3.0 liter' 120 HP inline 4 banger and Alpha 1 drive. I had the engine out to replace the engine to drive coupler. Now everything is back together. I couldn't get any spark so I installed a Flamethrower coil...
