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  1. 5

    Nose cone on lower unit, what to attach with?

    All I want to do is attach the nose cone that I've already removed from my old lower unit to my replacement lower unit. It was setup for a low water pickup which was nothing short of silly on my boat. I'm eliminating that function, I just want to know what kind of epoxy or adhesive I should...
  2. 5

    MC-1 lower unit on alpha upper?

    I am having some trouble keeping lower units from breaking. I had one break at the beginning of the season, and now I have another one broken 100 hours later at the end of the season on my last trip out. I don't know if it's the torque of my engine, it's the 270hp which seems right on the cusp...
  3. 5

    Loss of spark under load.

    1990 MCM 350 Magnum, not sure of serial number. Under heavy load, like getting on plane or accelerating faster while planing, I notice a loss of spark when I toggle things like trim tabs or engine trim. It happens more often in damp or rainy weather, sometimes it doesn't do it at all. I...
  4. 5

    How do I begin to go about fixing this?!

    Had my boat out in Ocean City, MD and I was docking to pick someone up at an unfamiliar dock. A wake hit me and knocked the side of my boat into a rock or concrete drain or something hard, I definitely felt it. Among other things I always have to fix on my boat, now I've got this to deal...
  5. 5

    Leaky y-pipe?

    I have a 1990 mcm 350 magnum, dont have serial number at this time. Water is intermittently trickling in at the top of the lower y-pipe horn. Does not happen when engine is running, only after running while still warm. After cooling down the trickle stops. Boat is in salt water now, this is...
  6. 5

    Speed increase from trim tabs?

    I have a 23' Cobia cuddy w/ 270hp Mercruiser that has always been sluggish to get out of the hole no matter the prop. Some props are better than others but it just doesn't jump up as fast as I'd like. I bought a set of Bennett Sport tabs with dual actuators on each side for $200 used, I...
  7. 5

    Engine mount adjustment nut is stuck.

    It's a 1990 MCM 350 magnum, I just got the alignment tool for the boat I purchased less than a year ago and whaddya know, it's not aligned. I'm starting by adjusting the front mounts 1/2 of a turn as the procedure calls for but the starboard side adjusting nut is stuck. I was able to free the...
  8. 5

    Looking for a heavy load prop

    1) Performance issue you are trying to correct. I want a second prop that I can switch with my current prop for when I will be heavily loaded and/or towing skiiers or tubers. 2) Current prop manufacturer, model, aluminum or stainless as a minimum. Solas HR Titan 3-blade SS 3) Current prop...
  9. 5

    Intermittent overheat, 1990 350 magnum

    At the start of the season I like to take my boat out for a test trip before I go on any journeys or invite people out. Yesterday I put in at the local ramp and went about 10 miles down river at moderate speed. I began to smell a 'popcorn' burning smell for lack of better words, I slowed to...
  10. 5

    Did I winterize correctly?

    1990 Merc 350 Magnum and this is my first I/O winterization. -hull drain already out -removed drive and changed the gear oil -stuffed an old towel in the drive bellows to keep debris out -covered trim rams in plastic and supported them so they aren't sitting on the ground -removed what...
  11. 5

    why is there no buy/sell/trade forum at iboats?

    honest to goodness question here. i've been on many automotive forums, large and small, they all have wanted, for sale, and trade sub-forums. i would think many iboats members have parts/spares that could be very useful to other members who are having a hard time finding parts especially with...
  12. 5

    when it comes time to winterize..

    i've been pondering how i'm going to do this for a while. if my motor were easy to get to i would be opening the drains and letting all the water out manually, air can't freeze right? well, my engine (1990 MCM 350 Magnum) sits low in the back and it's godawful akward to get to. after removing...
  13. 5

    some goop in drive bellows

    i've had my drive off a few times now and i've replaced the bellows and the drive to bellhousing gaskets, i still get some residual goop in the bottom of the drive bellows that i have to soak up with a rag. it's not completely full but there's about 1/2" of watery, greasy slurry that sits in...
  14. 5

    blew my alpha one, what did i break?

    well, i know you can't tell me what broke but you can guess. 1990 350 magnum alpha 1, gen 1, 270hp, 14.75 x 20p solas titan SS prop. i think i was overpropped for the load but my 17p spun a hub the day before. was out in the ocean on a nice day, pulling a tuber right along the coast about...
  15. 5

    help me choose the right propeller

    i have a 1990 cobia san marino 225ecs, it's got a 270hp, 350 magnum alpha one. currently it has a 14 x 19p stainless prop and turns 4350rpm WOT. that equals 48.6mph with trimming, 3 people and half tank of fuel. supposedly the dry weight is 3800lbs, does that sound right? i really think i...
  16. 5

    1990 alpha one shifter question

    hi everyone, i am new to this boat ownership thing. i just bought a 1990 Cobia San Marino 225 ESC. my family has had boats in the past but we haven't had one in about 10 years. i miss having one so i got my own. a little about me, i am 28 years old and a very resourceful auto mechanic...
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