Okay I really deserve the 'C.A.T.' (cheap assed trick) award on this one. I was thinking about his a couple weeks ago, and moved on it today. Making a cheap, easy to install and remove add on the the stock OEM muffler, that eliminates the output note.

Bill of materials:
6' flexible 3/4" electrical conduit (2.89$)
1 connector for the conduit (0.63$)
1 3 1/4" standard hose clamp (0.99$)
total, a whopping $4.51

Okay Sparky here's the deal, from some of my engine building in the past I remembered that you can use flexible conduit as a muffler in itself, the internal ribbing is baffled and leaks just right to deaden single popper motor exhaust notes. I simply attached the connector to the conduit, and ground down the threads intended for a electrical box just a few thousands to fit snug in the stock muffler, I did use galvanised steel wire ( not listed in the parts as I have many miles a spare electric fence wire hanging around ) to coil the conduit tightly, and creat 'tabs' around the connector. The tabs are clamped down with the hose clamp(on the larger muffler diameter) to keep this engineering marvel in place. Lastly I put a couple of wires off the back rack to hang this contraption. Yes it works and very well at that, mind you it does nothing for natural air cooled motor noise, intake noise, valve noise, and gear whirring( all fairly low if your not revving the motor. And yes it very much restricts the exhuast and resulting performance, on my standard hill climb test it cut three miles per hour off of stock (from 35 to 32 MPH uphill acceleration to a marker). I feel better preformance closer to stock could be acheived with larger conduit with no increase in noise, but that's the largest conduit I could lay my hands on without a search through many stores.

Closing notes, this "C.A.T." met all criteria, cheap (much cheaper than my original 35$ goal), Very quickly installable and removeable (under five minutes for install/remove, and only about fifteen minutes to construct), and of course it absolutly works, when you start the motor with it on you won't know the engine has started. when you remove it you may think something is wrong... Is it really that loud all the time??? [img]i/expressions/face-icon-small-smile.gif[/img] [img]i/expressions/face-icon-small-smile.gif[/img]

 

i wanna see some pics
that seems crazy

 

Well, I have pics', but no good way to host them, what is the best way for pic hosting anymore anyhow?

 

http://photos.yahoo.com

 

Okay, yahoo, photo it is...
exhaust tack on

Not sure how to insert pictures into this forum...Anyone else having trouble with the fresh link I put in? I swapped some stuff around created a new album and changed the permissions.

 

I get an error message.

 

It worked fine for me. Yahoo did make me login though with my Yahoo account before displaying. In the futurue, consider using www.picturetrail.com. It is free and you can give out a url to any picture you want. Works great for posting pictures on e-bay too!

 

isn't it possible this could be bad for your engine by putting too much backpressure on it or something? or maybe i'm just dumb trying to look smart by using big mechanic people words like backpressure.

 

No the increase in backpreassure won't hurt a thing( In some engines/applications they shut the exhuast off 90% or more with a valve to create engine braking situations ) What it will do is decrease performance, Like I mentioned I think a bigger conduit is in order to keep performoance better than with that setup. ( I think with a 1" ID tube there would be almost no loss of performance. )

 

you forgot to use some chewing gum [img]i/expressions/face-icon-small-smile.gif[/img]