Recent content by Phantom309

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    Black Max 150 overheating and water pressure

    Yeah I started to wonder if that was the case. It was overpropped, and I just took it out with my new prop at a better pitch. It was reading just above 3/4 on the gauge this time, so better than before. Still had a good stream from tell tale, and psi from 15-18 at WOT, so I’d say my problems are...
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    Is My Mercury Prop Spun?

    Mine doesn’t have a setting for 12. I had a hard time finding the right setting, but ended up putting it on 5. It seemed to read fairly close but still was reading a little high.
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    Is My Mercury Prop Spun?

    I ended up taking a sander and hitting the edge just enough to take the paint down so it wasn’t binding anymore. Just got back from the river. Performance was great. We didn’t loose any speed, still at 45 but with 800 lbs tho. Holeshot is so much better now. It doesn’t struggle at all or take...
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    Is My Mercury Prop Spun?

    Okay guys, so the new prop came in today and I just installed it. It’s a OEM, Mercury Black Max 14 1/4 x 21, aluminum with flo-torq II kit. Once installed, I gave it a good spin, and in one spot it seems the outside forward edge of the prop is touching the exhaust housing at one point in the...
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    Is My Mercury Prop Spun?

    Manual says 5000-5500 for WOT. I got 4600 with my 24 pitch prop and about 650 lbs of passengers and gear.
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    Is My Mercury Prop Spun?

    Speed was measured with gps on the fish finder, and verified with gps on my phone. Speedometer on the dash isn’t currently working. The tachometer is a cheap one off Amazon and it honestly doesn’t give vibes of being the most accurate. Tach on my dash isn’t working either. It reads about 4x...
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    Is My Mercury Prop Spun?

    New prop should be in tomorrow. Fingers crossed. With my old prop, can it be fixed, or is it worth fixing? It’s a stainless prop and appears in very good shape. I think the pitch is steep for my setup but it was working for me and if it can be easily fixed I’ll keep it as a backup. Any ideas?
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    Is My Mercury Prop Spun?

    1987 Mercury Black Max 150 Xr2 on a 17ft bass boat. Current prop is a 14 1/4 x 24 II stainless steel 3 blade. Can’t find any marking with a brand or part number on it. Had it out on the water today, and while running on a plane at WOT, the motor suddenly sounded like it wasn’t under much load...
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    Black Max 150 overheating and water pressure

    New thermostats installed and poppet fully rebuilt. Took it on the water today. Psi at idle is 9-10, WOT it never went over 18. At WOT, The temp would get up to about 7/8 on the gauge. Based on when I tested the temp gauge, that should be maybe 185F. Is that high for this motor? It never got...
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    Black Max 150 overheating and water pressure

    Pulled the poppet back apart and looked at it. The plastic disk does appear to be very slightly warped. I ordered everything to completely rebuild the poppet valve, new water pump, and new thermostats. Also ordered the service manual. In my limited experience, any OEM service manual is worth its...
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    Black Max 150 overheating and water pressure

    It’s going into the top of the block, just behind the flywheel. I’ll have to look closer at the poppet as I’m sure I could have missed that. Either way I am going to be replacing the parts I checked today.
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    Black Max 150 overheating and water pressure

    Okay been messing with it this morning. Here’s what I found. The poppet valve seems to be in good shape. No sticking, wear, or anything and the gaskets all look good. Thermostats look good. Tested them in hot water and they open up right at 145 degrees. Tested both temp sensors. Starboard...
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    Black Max 150 overheating and water pressure

    Another thing, can someone point me towards a good service manual? I have a Seloc that came with it but it covers a very wide variety of outboards and I find it not the most useful. Is there a recommended manual that is more specific to just the motor I have?
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    Black Max 150 overheating and water pressure

    What about PSI at idle?
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    Any active members here that have build your own Eska cdi?

    Do you still have the old ignition components? I’d try to get them going again. It wasn’t that hard to do
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