cooling

  1. RalphD

    Venting / cooling the salon on a DB52

    I wanted to reach out to see if anyone has considered adding ventilation to the salon of a DB52. A little background - during the week when we are not on the boat we usually do not leave the AC on and the temperatures in the salon can get well above 100 degrees. As the temperature increases...
  2. 9

    Metal Flakes in my Cooling System. Manifold? Should I worry?

    I just bought a 1997 Sea Ray 175 3.0 merc Alpha One. I was just feeling how soft the water hoses were by squeezing them and the elbow at the pump crunched. I took it off and found this: Should I pull the manifold and other cooling parts clean or replace? Is this the manifold flaking...
  3. S

    How do I set the SMXII when I leave the boat?

    Is there a way to set the SMXII to just dehumidification mode while I'm away? I've tried a couple of things and keep getting dehumid followed by cool/heat with 1.5 temp difference.
  4. Bwardz50

    8.1 Cooling system flush questions

    Hi there, thanks in advance for reading... I took my new (to me ) '06 340DA out on New Years (water was cold) and once under load, my port engine started overheating. I shut it down at 203° to avoid damaging anything. Long story short, I discovered that the fresh water cooling system had chunks...
  5. T

    96 7.4L MPI Heat Exchanger End Caps

    One of my end caps is cracked and leaking, having a tough time finding info for replacement parts. Does anyone know the P/N's for the end caps and gaskets? Thanks!
  6. Boater420

    Temp Gauge Acting Strange

    I was out on the water last weekend and noticed my port temp gauge acting weird. Started out fine, warmed up to 170 degrees, idled around for a while and all was good. Then rather abruptly, the gauge went to all the way to cold...slowly climbed back to 170 and repeated the process over and...
  7. M

    Uneven water flow on a 400 Sundancer with 3116

    Hoping someone can point me in the right direction. I have noticed that at idle in the marina that the water flowing from the above water line outlets is appreciably different between sides. The port side has a small amount of water, while the starboard side has a good, high volume flow. When I...
  8. R

    First time changing Impellers - 1990 350 EC twin 454 Merc Inboards

    Hey guys, Although, I've piloted many boats for some years, from parents to co-owned boats, this is my first solely owned boat, so I'm a little new to boat maintenance. I'm getting ready to do my first (of many, i'm sure) impeller replacement to hopefully solve a water flow issue I am having...
  9. R

    1990 350 EC - Merc 454 Inboards- Steam in exhaust / raw water flow low

    Hey guys, I relatively green as far as maintenance on my boat goes, but not totally ignorant to basic mechanics. Here's what I'm seeing... Coming in this weekend I was pushing a lot of steam of both exhausts. I immediately checked the strainers and no blockage/excess debris (tho port did...
  10. R

    1990 350 EC - Merc 454 Inboards- Steam in exhaust / raw water flow

    Hey guys, I relatively green as far as maintenance on my boat goes, but not totally ignorant to basic mechanics. Here's what I'm seeing... Coming in this weekend I was pushing a lot of steam of both exhausts. I immediately checked the strainers and no blockage/excess debris (tho port did have...
  11. B

    84 360 Aft Cabin Engine room venting

    Hello All, I'm just wondering if anyone out there has any knowledge of how the vents on the port and starboard side of the boat are supposed to be mounted? Mine are all mounted with the cups facing aft, so it doesn't seem any air flow is actually getting in through the vents, to cool the engine...
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