riser

  1. 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...
  2. BHW-Mike

    How to Freshwater Flush an Alpha One While In the Water (No Muffs)

    I have been searching this forum and other internet sites and I can't find a definitive answer on how to flush the elbows (aka-risers) and manifolds on my 2005 Sea Ray 185 Sport (4.3l Alpha 1) while in the water and NOT using muffs. Biggest issue I believe is the Alpha 1 has the impeller in the...
  3. B

    2016 SPX rust issue - need advice

    I have rust at the manifold gasket, motors mounts and other part on and in the engine cabin. Any thoughts on the pics? 79 hours on the engine. Mercruiser 4.3MPI 250hp.
  4. hpcrank

    Need riser part number for 1981 454-330 hp. Mercruiser engine

    Greetings Can anyone give me a part number for a gen. 4 - 1981 Mercruiser 330 hp. 454 exhaust riser? Mine is on a log style manifold that mounts the riser on the far aft end of the manifold. The exhaust outlet points straight down. Mercruiser part number or aftermarket number ok. Thanks Hpcrank
  5. GoFastr

    Exhaust manifolds & risers replacement- saltwater use and kept on trailer

    Well upon thinking I only had a leaking hose on the port side, and when I went to change it the leak didn't go away. I ran the engine on the muffs on the trailer and for the first 5 mins all looked good. After about 15-20 mins I noticed that along with the water coming from the exhaust that...
  6. sbmcwilliam

    2006 SUNDANCER 340 bow hatch riser arm

    I have to replace the forward bow 20x20 hatch riser arms. It appears they're riveted into the frame of the hatch. The SR parts manual doesn't provide any part number for these riser arm but it appears they're Taylor Made and available on Amazon. Can anyone advise the best and easiest way to...
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