Volvo Penta SX-CT1 exhaust

SMullenMaine

Cadet
Joined
Sep 6, 2012
Messages
25
Hey all,

Just bought this boat last fall... it's been a big project, new transom & floors, etc... reassembling now.

I had noticed that the boat was louder than I expected when it was in the water... Now that I'm looking at the parts I can see that some of the exhaust is allowed to escape through (and around) the anode at the bottom of the transom housing. This would be out of the water when the boat is on plane and I assume that this makes it a lot louder.

Is this necessary??? could I block this outlet and force all of the exhaust to exit through the prop?

Thanks, Steve
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Volvo Penta SX-CT1 exhaust

No, don't block them off. They are idle relief ports. Without them, it wouldn't idle very well. Too much back pressure.
 
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