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  1. xxTheJokerxx

    Yamaha prop question...maybe?

    I'm starting on YEAR II of my 1992 Celebrity GM350/Yamaha Sterndrive run. Last year it worked out surprisingly well and trouble free despite the fear-mongering on the forums, lol, but I digress. My question has to do with the propeller availability. I know the Yamaha has a 15-spline output...
  2. xxTheJokerxx

    EST vs YEMS are they different?

    When I look up parts for my Yamaha stern drive, I can choose 5.7EST or 5.7YEMS. What does that mean? Does it have something to do with instrumentation? I ask because my depth finder & fuel gauge as the only ones that are accurate. The tach reads 2000 rpm low, temp is 85? cooler, and oil pressure...
  3. xxTheJokerxx

    I need sort of a cross-reference

    I have a Yamaha stern-drive and I'm currently running a 48-79574-19 propeller. I'm happy with the performance, but I'm looking to upgrade to stainless. Does anyone know the specs on this prop? All that I can tell is that its a 19 pitch. Thanks.
  4. xxTheJokerxx

    Simple Yamaha I/O Question

    I posted in the stern drive forum to no avail. I have a 92 Celebrity that was highly over-propped by the previous owner. (21P 5-blade). My question is as follows: Every time I look up a replacement prop, several manufacturers list the same part number for both a Yamaha prop and a Mercruiser...
  5. xxTheJokerxx

    Yamaha Prop = Mercruiser Prop!?

    I've noticed that several manufacturers have props specified for Yamaha stern drives, but the part numbers are the same as an alpha one in some cases. Can I really run a prop for a mercruiser on my Yamaha? That would definitely makes swaps & trades alot easier!
  6. xxTheJokerxx

    Core Plug Update

    Ok, the core plug is replaced (without nudging the engine with dad's help). The external crack weeps about a gallon every 2 hours once the block is at op-temp. Win. Now I have another issue...when you start the engine, you can go forward or into reverse, but when transitioning from one to the...
  7. xxTheJokerxx

    Yamaha stern-drive engine mount question...

    OK, well my wife and I recently purchased my first boat. A 1992 Celebrity 190BR with a Yamaha 5.7L I/O engine. My question is as follows: While pressure testing the cooling system, a core "freeze" plug behind the right engine mount popped out. What is the best way to support the engine while...
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