View attachment 70834 bought some sound deading felt 3/8" thick and stuck it to 1/4" wood on bottom and back and aluminum panel on front. Trying to keep light. If you go thicker wood it will kill more sound! View attachment 70850 View attachment 70874

 

So how are you quiteing it are you going to do exhaust work?

 

Now to make a cold air intake! A must. View attachment 70898 and building fan mount for squrill fan and mounting a muffin fan blowing on head and exhaust pipe View attachment 70906

 

Am I the only one getting an invalid attachment message when I try and open them?

 

You're links no workey. Sounds interesting tho!

 

as far as exhaust goes I have Tryed pipes that helped a little but after the valves burnt up on my old one I'm not going to monkey with that. Just pipe Iit up out of the boat and away from rear shooter

 

Hmm I can see them for some reason do any work?

 

 

relocated pull cord and on/off switch to outside. Cut a notch to reach choke

 

Im using a crappy work computer and I can see all of them.

 

One major issue I found while test running it was the electric generating motor not the engine was hot! With no load either. Well blowing the hot air to the rear of the box, the electric motor pulles cooling air from back to the front. My fix was make a cold air intake that connects the back of the motor to the outside.

 

Question - why not remove gas tank completely and put in electric fuel pump from boat tank? Add more sound barrier instead.

 

plasma cut bigger holes and hammerd outside fins shut

 

My boat is a 1652, behind the genny there's two side compartments, 3 batts and a 3 gallon tank(for local lakes) converters and ballast box. Space it tight!

 

by adding like 1/2" mdf board would make it quiter but it is a big genny! That's about the only thing I would change. II'm extremely happy on how much of the aannoying scream is gone. now it's a more of an errrrrrrrrrrr. Still nothing like an inverter though. The hardest part is trying to figure how to keep things cool. The work was worth it so far! Time will tell. I'm trying to find a decibel meter also and will report back.

 

Hope it all works out for u and doesn't give u any trouble.....Generac's warranty department would have a fit!

 

Never mind. I just noticed where u lived. That's Generac country right there. I'm sure somebody would help u out!

 

Welders use a wax pencil that melts at a certain temp. Outboard mechanics use them also. You could apply some 200'F tempstick and watch for the results.

 

good idea! I have some in my box! My box only gets warm rt now and the motor part was hot but no where 200°. And that was befor i added the vent. That was on a 40° day. Ill have her first run on the water this weekend!

 

Works awsome! Box wasn't even warn, but only 40° out tonight. Shot for 6 hrs and ran the whole time. Nothing but complements on it from my team mates! And filled a 55 gal drum with small commons and buffs. Great way to start the year.

 

I was thinking of putting the motor/gen unit into a smaller rectangular box with a fan at one end and access door by the outlets and then either remount the tank on top of box or use a separate tank altogether. I would relocate the airbox and outlets also. Now this is just a generic idea right now but with some trial and error I think I could save some space in 1542. I already took out the rear bench. Just an idea.