Height of exchaust outlet

The outlet pipe for the motor is not every high above drck. About 2 meters. On days with little wind, and days with the "wrong" wind direction it feels like we are breathing in substantial amounts of exhaust gasses. Not very nice.

Would it help if I put up a higher pipe? Let`s say 3 meters. I am getting images in my head of the tall factory chimneys spewing blsack soot over London during the industrial revolution. Did they manage to get rid of it, or did the gases just come falling down on them?

 

Just put it under the waterline on the transom. As long as you have a valve/flap on it to keep water from coming back in you will be fine and have a much quieter ride.

 

Underwater exhaust is not that simple.
You’ll find some excellent advice on this subject at sbmar.com.

 

A higher pipe will help. Underwater exhausts can cause a lot of new problems if they are not designed properly. Among other things, the increased backpressure will reduce the HP of the motor.

 

If it was on the transom, It wouldn't really be an underwater exhaust whenever the boat is moving. Wouldn't that mean that there wouldnt be any change to the backpressure?

 

I don't think anybody can say without some photos of the boat at rest and underway.

 

It being a dry stack exhaust, KISS method would be to raise outlet height.

 

I agree.