Help with round muffler on 12HP C-121

[Fordiesel69 271]

The factoy muffler is rotted out, so I was thinking of threading the nipple on the engine block, putting a 45 elbow on it, then using some kind of extension nipple.  Does anyone know the correct length nipple and maybe a pic?

[Fordiesel69 271]

This is the style I have at home that I want to use.

 

http://www.ebay.com/itm/Universal-Kohler-Muffler-for-Lawn-Garden-Tractors-/360240935193?pt=LH_DefaultDomain_0&hash=item53e0087119

[squonk 43,891]

I had a 414-8 with the rotted round muffler. What I did was get a short 1 1/4" black iron nipple. I hogged out the inside of it a bit so it would slide on the pipe on the engine. I cut slots in one end so it would crush some then clamped it. I threaded a 1 1/4" to 1" reducer on then a short 1" nipple then a 1' pepper pot muffler. Didn't look the greatest but it cost 10 bucks and quieted the engine down.

 

Edited May 21, 2013 by squonk

[Fordiesel69 271]

Do you have a pic of this setup?  This is what I am interested in doing to mine.

[squonk 43,891]

The pic I posted is the only one I had took. Pretty straight forward though.Just figure out how far  you want it to stick out. Didn't take much to enlarge the inside of the 1 1/4" nipple. I used a die grinder and a carbide burr.

[Trouty56 567]

I had a 12hp with a bolt on muffler...when I took the muffler off and scraped the carbon off the inside of the exhaust port it was already threaded......

 

Maybe this you already know from rereading the first post....

Edited May 21, 2013 by Trouty56

[Fordiesel69 271]

I was planning on threading the exterior of the engine nipple.