How to build a 2-stroke muffler the right way ??

[Lasse]

Hello !

What should I think about when I building my own muffler/silencer for a 2 stroke engine ?

Some guidelines ?
How to ?
Do and dont's ?



Engine : Rotax 793 HO

Max Rpm : 8000 rpm

Number of cylinders : 2

Max output : 140 Hp

Carb : 2 * Mikuni TM-40




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[flotek]

rule number one on silencer building ,-dont do it
rule number two -buy one instead

[8-ball]

yeah just buy one.. even if you go buy a stock one used... don't mess with trying to make one

[Lasse]

Who said life is easy ? *LoL*

serious....
I want to build my own muffler/silencer because there is no one out there for my aplication.....

Someone have some advice ?







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[SHOWTIME]

what is it going to be installed on?

[lt250racer]

I visited Sweden just over a year ago. Beautiful country, & Beautiful vehicles.
As for the silencer, I also have to admit that buying one is the most beneficial choice. However if you have a fabrication shop, they could be made. Does it have to be Spark Arrested?

[SkinStroker]

that and your going to have to special order the muffler bearings. You could try and build them yourself but its alot of work

[Lasse]

Originally Posted by lt250racer

I visited Sweden just over a year ago.
Beautiful country, & Beautiful vehicles.
As for the silencer,
I also have to admit that buying one is the most beneficial choice.
However if you have a fabrication shop, they could be made.
Does it have to be Spark Arrested ?

Nice that You liked our country !
Welcome back !

No, it not need to be spark arrested !

[Lasse]

Originally Posted by SkinStroker

that and your going to have to special order the muffler bearings.
You could try and build them yourself but its alot of work

I do not know the word muffler bearings ?

[lt250racer]

He was implying a joke. All you need is a outer case with a tube traveling though it, but in the tube must have holes all thru it (see pictures). I would reccomend using Aluminum.
The smaller tube with holes then gets wrapped in a fiberglass cloth.