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  1. S

    Bukh DV10 too hot with NO thermostat

    Hello all, so temperature alarm went on, I've checked water coming out of exhaust was cool, so suspected thermostat. Found it broken, so removed. Now water coming out of exhaust always warm, but not hot, even engine is very hot. I can't keep my hand on the cylinder. Any ideas are very welcome.
  2. S

    Project 5.7 to 7.4 swap. Help me to finish it!

    Hello all, I'm in the project to swap my 5.7 to 7.4. Boat is 1987 Sea Ray Sundancer 268. I had cracked my 5.7 block, and prior to this it had some knocking noise, so I'm not very interested to change block and hear the same sound again. During the winter, I've bought 7.4 as non runner, and...
  3. S

    Help to identify 5.7 noise

    https://www.youtube.com/watch?v=c0Hp1FH4I_Q Hello, changed exhaust gaskets, no help. Had two mechanics listening to it, one told: lifters, another: cracked piston. How to figure it out? Thanks in advance.
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