Age : 47 Join date : 2013-04-21 Posts : 2911 Forum Rep : 20 Location : Ontario Canada
Subject: Re: Make your own muffler! Wed Apr 30, 2014 8:40 pm
There's gotta be a hundred ways to skin that cat. I am running a home made muffler on MULE, and had that very same one on my old gokart before. Sweet and easy to build. I'm gonna fab another one soon, I'll make a vid this time, because I caught hell from people for not making a vid last time...
Join date : 2012-12-21 Posts : 2100 Forum Rep : 2 Location : Norway, Europe
Subject: Re: Make your own muffler! Fri May 02, 2014 6:40 pm
Not really a muffler anymore with a straight pipe through it. - Well some offcourse but its more for power.
If you want to make a muffler thats actually quiet you block the pipe, say mid-way. Then drill holes on each end. The small holes diameter should together be the big pipes diameter. on each end. - then fill it with a suited dampening wool.
Age : 21 Join date : 2013-09-15 Posts : 467 Forum Rep : 0 Location : Greensburg, PA
Subject: Re: Make your own muffler! Fri May 02, 2014 7:56 pm
neat, got some ideas in my head now for the montgomery
fast adam Forum Newbie
Join date : 2014-07-21 Posts : 64 Forum Rep : 0
Subject: Re: Make your own muffler! Wed Jul 23, 2014 9:40 pm
thanks for the idea I'm gonna try something like that and take my stock muffler and try stuffing the pipe with steel wool its just a 4" pipe coming out of the block with a stock muffler on it
mr.modified Seasoned Veteran
Age : 30 Join date : 2013-11-02 Posts : 2712 Forum Rep : 115 Location : New Jersey USA
Subject: Re: Make your own muffler! Tue Aug 19, 2014 10:27 pm
Takes all the fun out of finding a cheap used glass pack at a swap meet. Think he'll eventually paint it with high heat red?
Here's some old pictures of a muffler I welded up a while back. I was trying to do it with a stick welder and some thin rods before I had a wire feed job, so the welds didn't come out too good. One inlet, two outlets.
Edit feb 2017(pics gone, were linked from another forum which apparently deleted the old thread with the pics...)
If you want to make a muffler thats actually quiet you block the pipe, say mid-way. Then drill holes on each end. The small holes diameter should together be the big pipes diameter. on each end.
Very similar to what I did. I used a length of pipe as the muffler's "core". At the half mark, I used my grinder to cut a slot about 3/4 through the pipe, and inserted a slug made out of steel sheet (16ga I believe) and welded it in, creating a stop. Then, instead of drilling a zillion holes, I used my grinder again. I cut a dozen or so slots along the pipe, maybe 1/4 of the way thru the pipe, all the way along (both sides of the stop, spaced evenly along the pipe. I flipped the pipe over and repeated, so that I had slots down both sides- not that a pipe has "sides", but you get the idea.
From there, it was a simple matter of welding it into the canister I chose. I did not use any kind of damping material. I might on the next one.