muffler mod.
 

Hi everybody,

I would like to make a modification on my OS 10 muffler. I need to cut about 3/16 t0 1/4 inch on the muffler entry as shown on the diagram. (the part with the x) Will this affect the performance in any way? Thank you in advance

Claude

____________
l _x__x__x__x_l
l l
___ l____________l_______
l \_______
l _______l
l_______________________ /

muffler mod.
 

Sorry. The muffler doesn't appear the same as in my e-mail

muffler mod.
 

Ok I got it now!
Here is the picture

muffler mod.
 

That shouldn't effect it in any way, other than having to shorten the screws.

muffler mod.
 

Shortening the muffler stack shouldn't change the performance noticeably. As 00hex says you'll probably have to shorten the screws. One very important step is to file the interface between the stack and the engine itself perfectly flat. Use a mill file so that it is not a scratched surface.

muffler mod.
 

Its not a tuned pipe, just an expansion chamber, as such, you could use a beer car if you wanted to. Performance will not be affected. The ONLY thing that affects performance on an expansion chamber is the diameter of the exhaust outlet.

Max

muffler mod.
 

Thanks to everybody for the great help.

Claude