Honda lawnmower out board

OMCFREAK

Seaman Apprentice
Joined
Dec 7, 2004
Messages
43
g'day i did not know where to put this question ast it is a mix of lawn mower and outboard. my dad recently made an outboard out of a honda lawnmower and a leg off of a gold cheetah outboard. well it runs well but the lawnmower is incredably loud and i am wondering if anyone with experiance with lawn mowers knows ho i can quieten it. the fly wheel has a fan which makes alot of noise can this be removed as the engine shouldnt be over revving as it is a outboard. any way any help will be apreaciated. this outboard is a freak of nature. a kid on the shore said to me "hey! did you know thats a lawn mower.", i replied "i know, Im cutting the weed!"<br /><br />Thanks.
 

WillyBWright

Fleet Admiral
Joined
Dec 29, 2003
Messages
8,200
Re: Honda lawnmower out board

The fan on the flywheel is there to blow air over the fins on the cylinder. That needs to be there. Unless you mean it has an air vane governor that's rattling. In the water you shouldn't need a governor. As far as the exhaust, if you can pipe it underwater, the noise will be reduced greatly. There have to be relief holes drilled in the pipe above the water or water could possibly suck back into the motor. They'll help with idling too.
 
Joined
Jan 11, 2005
Messages
11
Re: Honda lawnmower out board

i done the same thing with a briggs and stratton lawn mower motor, about to build another one with a larger motor and looking for a super quiet muffler to cut down on noise
 

sloopy

Commander
Joined
Jul 12, 2002
Messages
2,999
Re: Honda lawnmower out board

What did you do to your Briggs Motor? Could you explain more and tell me what you used to make the underwater exhaust?
 
Joined
Jan 11, 2005
Messages
11
Re: Honda lawnmower out board

im not piping the exhaust underwater, the reason i did this was for less pollution, the local lawnmower service center guy told me there is super quiet mufflers, so i plan on ordering one before spring
 

Luna Sea

Lieutenant Junior Grade
Joined
May 20, 2002
Messages
1,069
Re: Honda lawnmower out board

You just might be a redneck if....... :p
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Honda lawnmower out board

wow go to the godevil site and look at the video of the surface drive. man dem boy's been eatin mudbugs and gator meat :) :)
 
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