Evinrude E-NATION, for those dedicated to water, power, fishing and fun
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Mate
Posts: 1
Registered: ‎01-29-2018

Etec 30 hp exhaust routing

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Hello all,

 

I have a 2013 Etec 30 hp equipped with a 4 blade high thrust prop that I use on my pleasure barge.  The motor is in a well that is only ventilated by virtue of being open at the top. Consequently I get a lot of exhaust in that area, even at higher rpms.  I tried sticking on a flexible hose over the exhaust relief port to direct that exhaust out over the side, which works well. However there is still exhaust coming out of the muffler drain hole lower down. If I block that hole what bad things could happen? Thanks!

 

Alan

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Captain
Posts: 63
Registered: ‎08-20-2017

Re: Etec 30 hp exhaust routing

I think blocking the muffler drain would cause exhaust water to build up in the muffler and restrict your exhaust relief. The best solution would be to install a bilge blower to vent your motor well. The engine is "inhaling" dirty/burned air in the motor well and will not run as efficiently.
Low emission engines run a 14:1 air:fuel mixture. That is 14 pounds of air to a pound of fuel so an engine needs a lot of fresh air to run properly.
Mate
Posts: 1
Registered: ‎03-11-2018

Re: Etec 30 hp exhaust routing

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Hi, I am interested in how you like your ETEC 30 overall, for pushing your barge with the HT prop. I am considernig the same set-up, for my catamaran. I am only looking for 8kn cruise, 10kn top speed. Most of all I am looking for a lot of thrust at low speeds, to push the boat off the dock against the wind, or through a head-on current and waves. What does your barge weigh and what speeds are you getting? Thanks for the feedback!