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  1. K

    Location of Halon control module on 420AC

    Trying to track down some issues and want to make sure that the sea fire control system is not part of the issue. Can't seem to find the control module though. My issue is that when I hold my single switch remote generator start switch down it will start normally but as soon as I let it go...
  2. K

    Vacuflush tank removal aft bathroom 420AC

    As the title says, I need to pull the vacuum tank from the aft bathroom. Any suggestions?
  3. K

    Need quick performance numbers - 2006 Sundancer 390/400 with diesels

    A good friend is picking this boat up next week. I will be joining him for the return trip. He's moving up from a trawler so this boat will be a little faster! I need a quick idea of fuel burn and cruise speed for this boat with diesels. If it's fast enough, we can make a 2 day trip in one...
  4. K

    Strange vacuflush issue - pump keeps running despite replacing almost everything

    Here is a new one for the group - Vacuflush pump keeps running. Replaced all of the duck bills. Replaced toilet bowl gasket. Pulled hose off of pump container and can feel a solid vacuum. Pulled hose off of pump and it holds suction on my hand. Replaced pressure switch. Bowl holds water. Put...
  5. K

    How much weight can I put on the front deck of a 420 aft cabin?

    I need to move some stuff by water and my best bet right now would be to use my own boat rather than try to put it on a barge. One of the items that I need to move is approximately 5 foot long and 3 foot wide but weighs just shy of 1200 pounds. Do you think I could safely put this on my front...
  6. K

    Over the leaks! How to find them - 420AC?

    I have had an issue since the first day I bought my boat with leaks on both sides of my 420AC. With all of the rain in Florida lately, it has gotten worse. The leaks are on both sides and drain into the port cabinet in the laundry room as well as the starboard cabinet in the kitchen. I have...
  7. K

    New cutlass bearing installed. Prop hard to spin

    I had new cutlass bearings installed in March of 2018. In February of 2019 I had prop work done and the diver mentioned that the port prop was hard to spin. Fast forward to this weekend - there is a noticeable “squeal” when you try to turn the port prop. Under power it does not make any...
  8. K

    What did I get in the box? Autopilot and VHF goodies

    A friend of mine is doing an upgrade and gave me a box of goodies. In the box it has the following: Raymarine Smartpilot S2G AST course computer Raymarine RAY240 VHF Radio Some box box labeled TII Power supply I have a Raypilot 650 autopilot (NMEA 0183.) Will any of this work for me?
  9. K

    "Liquidating" a boat - where to get price comps?

    I'm working on buying a place in the Bahamas and might wind up selling my 1998 420AC to free up some cash. Unfortunately, I'm having a hard time finding comps for what these boats should be listed for. The prices on yacht world are all over the place. A 2002 is listed at $190K at the high...
  10. K

    CAT 3116 coolant under pressure in tank - overflow empty

    We ran the boat a great bit moving it over to the Bahamas at the beginning of the March and yesterday, while in the engine room, I noticed that the overflow/ expansion tank on one of the engines was empty. I thought this was odd since during the pre trip it was at the "cold" mark. I started to...
  11. K

    Interesting engine temp observation

    The other day I took my boat on a long trip for a total of 55 hours. For a majority of the trip I ran at 1400 rpms (CAT 3116's) and both engine temps were right at 180 degrees. For part of the trip, I ran on plane at 2400 rpms and the engine temps ran just shy of 200 degrees. I ran at this rpm...
  12. K

    Need a wifi alarm battery backup thing a ma jig

    In 2019 I'll be keeping my boat a long ways away from my home port for several months and flying back and forth to it. I am looking for some type of backup power supply that has the ability to sent wifi notifications so I can compare when the power is off versus when the power comes back on...
  13. K

    "Clink" noise from horn compressor

    I tried to use my horn for the first time in several months and all I head was a "clunk" sound coming from the compressor. I tried tapping on the compressor but it didn't change anything. My boat has the compressor attached right next to the horns, concealed in the bow and now I'm wondering if...
  14. K

    420AC stereo memory breaker keeps tripping

    As the title states the breaker keeps tripping. Even with the radio unplugged from the harness it trips. Any suggestions?
  15. K

    Vacuflush poo emergency - it's everywhere

    I'm in the Bahamas right now and have a craptastrophy. The Vacuflush pump on my forward head has been (unknown to me) freely spewing "yuck" for the past few days every time it's flushed. I was able to wash a good portion of it away to where I could see the canister at least but when you...
  16. K

    Oil analysis found %0.10 antifreeze in oil - CAT 3116

    I sent my oil samples off to Blackstone and it came back with 51 ppm of sodium in the oil. The previous three years I had zero. The report suggested that I may have a coolant leak somewhere and that there was also 0.10 percent of antifreeze noted in the sample. To the best of my knowledge...
  17. K

    $625 to spend at West Marine - what to buy

    My dinghy died a slow death a few weeks ago and the “warranty” process netted me a gift card for $725. I wound up buying a dinghy off of craigslist so now I have a gift card left over. I have since bought the wife $100 worth of clothing at WM so I’m down to $625. Any suggestions on what...
  18. K

    Need help with a diagram - anybody with a 420AC

    I’m getting closer to solving my generator remote start problem. What I really need now is somebody to take a photo of the back of the switches on the panel that starts their generator. I have a Westerbeke in my 420 AC So if somebody would be willing to take a photo, I could see where in the...
  19. K

    Shell Rotella formulation change - Cat 3116

    I just read that the Shell Rotella T SAE30 that we have all come to run in our 3116's has changed formulations. Does anybody have input on this change?
  20. K

    Which switch will start this [.]itch - 420AC generator

    Okay, so I'm pulling my hair out once again with my generator start switch. Some of you may remember assisting me last year in finding the unicorn in the forest - a new gen 4 monoplex generator module which I thought was causing my generator start problem. As it turns out, it was not, as the...
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