exhaust

  1. N

    Looking to remove Corsa side exit, thru-hull exhaust, and run through outdrive (normal) on 2016 280SLX...

    I am not the 1st owner of the boat, have had it for 4 years and the boat is great, but the side exit Corsa exhaust makes some noise (not a whole lot) even when it is switched off. I just want the boat as silent as possible, the exhaust is for fun and doesn't add any performance/top speed. Is...
  2. GABulldogsNH

    4 inch marine exhaust hose new

    Brand new, 6 feet of trident core marine exhaust hose-flexible prt number 252-4000, paid $32 a foot and didnt end up using for repower but could not return to defender marine because they cut them to length ordered. Piad $252 with tax and shipping a few weeks ago. Asking $175 located in RI...
  3. D

    Reallocate exhausts

    Hi all, I'm Ray from the Netherlands and I have a 300 Sundancer with twin v8's. My boat has open exhausts and that's where the problem starts. We've enjoyed a nice holiday on the boat but the continuous loud and deep sound from the exhausts doesn't help enjoy boating with my boat but even more...
  4. A

    Shakedown Cruise 2021

    Took the new to me Sea Ray 270 out for a weekend cruise and am learning the difference between power boating and sailing. Power boating is more roomy and comfortable for the same length boat but definitely not for the faint of wallet. Be that as it is I found the following problems: - Appears...
  5. Mark SS

    Exhaust coming through thermostat housing when running dry

    I aquired a 2008 SeaRay Sundeck with a 5.0 MPI Bravo 3. It sat on a lift for 5 years after only a few hundred hours after the Dealer installed a brand new long block. In the time it was on the lift, it was lowered into the water and started for 10-20 minutes every few months to which it would...
  6. Mark Searay

    Loud Screeching both engine sounds and no water out of exhaust

    Hi all Hope someone will give me news that hopefully is a simple fix. Went to take son out in our 375 (340 Da) this morning and when I went to start port engine a squealing sound started like a loose belt in a car. (I’m no mechanic so excuse my wording) My son said no water was coming out of the...
  7. E

    Exhaust Risers

    Hello All, I am looking at purchasing a 2005 260 Sundancer. It’s has 300 hours on the Mercruiser 350 MPI Horizon motor and has been used in salt water, fresh water and stored on a trailer. Boat is in good condition overall. When I purchase I am going to remove and inspect the exhaust risers...
  8. R-and-R

    Exhaust hose burn thru

    Burned thru the exhaust hose on the starboard riser, starboard engine today. Pics below. It appears to be an actual burn through, not just age-related failure. Engine temperature was normal. Any thoughts on how/what would cause it? 2002 340 Dancer. 8.1s engines. ~ 700 hours
  9. bobt2000

    Normal exhaust?

    I just took the Sundancer out for her first run of the year. I bought it late last year and have never had an inboard before. So my question is this....in the picture....both bottom corners...see the exhaust from the side ports?? Is this normal?? Almost nothing at idle. I was running at about...
  10. Rixram

    Exhaust Manifold Question

    Okay, something I have been wondering about with exhaust manifolds regarding corrosion: On every exhaust manifold, there are large hex bolts/screws/nuts on the top and/or sides of them of them. Presumably, these lead to the cooling jacket of the exhaust, and are available for use as ports to...
  11. P

    340 DA purchase advice

    Hi, Looking at purchasing 1999 340DA with 7.4's and V drives. A few questions to start: I have heard about a design flaw in the exhaust that needs to be addressed... does this apply to this vintage? These engines have approx. 1000hrs with new risers and manifolds. What do I need to be looking...
  12. T

    boat advice please 09 250 slx

    Hi Guys, new to this so if this question can be answered somewhere else please point me in the right direction. I just made an offer on this boat http://bjmarine.net/boats/used/boat-details.php?BoatID=590083 which has been in stock since 2009 and has 0 hours never been in the water. Should I be...
  13. L

    Broken exhaust flapper found free floating in bell housing.

    I have pulled my outdrive for maintenance and found a plate, broken and resting in the exhaust port. I have located the part at the following url but do not know where this part mounts. Does anyone have a diagram or pics showing where this mounts? part...
  14. T

    Are spacers needed on exhaust risers for a 1997 370 DANCER?

    I bought a 1997 370 and the engines were disassembled and the parts were mostly gone. I rebuilt what I could and sourced the rest elsewhere. After about 1 hour of running, the Starboard engine back fired, broke the muffler and the heads were popping. Upon removal of the heads, we had water in...
  15. D

    Help - Sea Ray 340 - Loose underwater exhaust brass fitting

    I was swimming today and when I was cleaning the underwater components of my boat, I noted that the brass exhaust was loose as it was rattling when I was holding on to it. I checked with a screwdriver and one of the screws spins freely. I think it may need to be tightened with both underwater...
  16. D

    Diesel fumes while cruising?

    Hello, I have gas engines now and am considering moving up to a 2006 or newer Sundancer with diesel engines. Does anyone know how noticeable the diesel smoke/smell is when cruising slow in a boat with the Cummins QS 380's? I read that the Zeus technology has the exhaust flow underwater and away...
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