Boats For Sale:
Loud Exhaust on Take Off |
Post Reply 
|
| Author | |
TRBenj 
Grand Poobah 
Joined: June-29-2005 Location: NWCT Status: Offline Points: 21185 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: Loud Exhaust on Take OffPosted: June-23-2010 at 1:40pm |
|
If the impeller isnt pumping water, you wont know it unless the temp gauge goes up- you certainly wont hear it.
I suspect youre hearing an echo effect on takeoff. The large wake thats produced at a slow (just on plane) speed, combined with a slightly more bow-up position causes some sound reflection. Ive noticed this on every inboard Ive ever driven. |
|
 |
|
|
davehurwitz
Newbie 
Joined: June-23-2010 Status: Offline Points: 2 |
Post Options
Thanks(0)
Quote Reply
Posted: June-23-2010 at 1:13pm |
|
It's definitely more than a different tone--sounds like the impleller isn't pumping water and exhaust is dry but as I said, no overheating and I changed the impeller.
|
|
|
|
|
79nautique
Grand Poobah
Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
Post Options
Thanks(0)
Quote Reply
Posted: June-23-2010 at 11:40am |
|
it's called harmonics nothing to worry about, the tone is lower at take off then increases in pitch as the engine's rpms come up.
|
|
|
|
|
davehurwitz
Newbie
Joined: June-23-2010 Status: Offline Points: 2 |
Post Options
Thanks(0)
Quote Reply
Posted: June-23-2010 at 2:39am |
|
Hi, my 2004 SN exhaust is loud on take off but it goes away after a few seconds. No overheating and I replaced impeller. No water in bilge from drain plug missing from muffler. Any ideas?
|
|
|
|
|
Post Reply
|
|
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options