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Antique Gas Engine Discussion

How do you build a muffler?

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Old 06-09-2005, 10:28:05 PM
JHFoster JHFoster is offline
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Default How do you build a muffler?

I have a 7 hp Herc on a grist mill. I do grind for the public and do quiet a few "educational" events with the rig. The problem is that the old muff is about gone. Even the ones that are in good shape give a loud bark, at least the ones I have seen. Any tips on building a muffler for the old gal? thanks to all.
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Old 06-10-2005, 11:45:35 AM
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Elden DuRand Elden DuRand is offline
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Default Re: How do you build a muffler?

If you don't want the original muffler and bark, you could use a modern auto muffler. What I use on my Hoyt-Clagwell is what I think is called a "Racket Buster". Available from JC Whitney and probably most auto parts stores.

All they are is fibergalss filled tailpipe tips ;that are supposed to make a louder than legal exhaust legal. See the photo below. I found mine at a swap meet. I cut off the clamp-on end and welded a pipe coupling where it went. It sure is mellower than the original muffler.

Take care - Elden
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Old 06-10-2005, 11:52:47 AM
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PistonRing PistonRing is offline
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Default Re: How do you build a muffler?

Since the original muffler on your engine was heavy cast iron, you have a trip to the foundry in store if you want it kept authentic. You can save a lot of time by getting one ready to install from Harry's sponsor Starbolt Engine Supplies. They are not cheap but are first quality. Contact Bill or Linda at " ". They can fix you up.
Thank you,
Dave Reed
Otto Gas Engine Works
2167 Blue Ball Road
Elkton MD 21921-3330
phone 410-398-7340
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Old 06-10-2005, 04:02:54 PM
Andrew Mackey Andrew Mackey is offline
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Default Re: How do you build a muffler?

I just put in a post on how to build one last week.
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Old 06-10-2005, 11:07:45 PM
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Jim Sherman Jim Sherman is offline
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Default Re: How do you build a muffler?

I think these guy's at IHC knew how to make them.....look closely there are stacks of them.
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