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Author Topic: Exhaust Question  (Read 6727 times)

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Offline CSX-216

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Exhaust Question
« on: March 03, 2007, 09:42:23 pm »
Sorry if this is in the wrong section, but I was wondering what exactly goes into making a new exhaust for a mower. Can a simple steel pipe that is bent do the trick? Im looking for that piped snowmobile sound on the mower or something that just sounds good pretty much. Also when a new exhaust is put on does the jetting need work? Motor is a 1980 Kohler K341 16HP. Thanks
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Offline money89tractors

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Re: Exhaust Question
« Reply #1 on: March 03, 2007, 11:39:54 pm »
Search and you WILL receive.

-Phil
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..."I used that motto to keep going, keep pushing, keep digging to
find a way around, or through to find a hole, some kind of break that
would allow some space. Once something broke thru, I could be there to
take advantage. Then I would finish 7th instead of 10th." - Dubba G

Offline Squidd

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Re: Exhaust Question
« Reply #2 on: March 04, 2007, 12:11:25 am »
Actually....

It's gonna be hard to get a single cylinder, 4 stroke , 6000 rpm, lawnmower motor to sound like a multi cylinder, 2 stroke piped 9000 rpm snowmobile motor...

I don't care what kind of bent pipe you put on it...
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Randy Stys
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Offline CSX-216

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Re: Exhaust Question
« Reply #3 on: March 04, 2007, 09:16:12 am »
Yeah that would be a little rough, I didnt know if there was a way or not. And Im not very computer smart, thanks for pointing out the search option on the page.

One more question that I couldnt find: As far as a lenghth of pipe (Im giving up on the snowmobile part, just wanna fool around now). What would be a guess for a length for my Kohler? Same as what the other guys said 12" - 15" ?
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Offline Squidd

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Re: Exhaust Question
« Reply #4 on: March 04, 2007, 10:11:04 am »
That would be a "minimal" length (per cylinder) to keep enough back pressure to torque up and keep from burning the valves...around 1" in diameter....


Then "suggest" another foot or so of 1 1/2" pipe (again as part of "flow" equation) and then flair it out with a length of 2"+ for a rumbley sound or cut it there for a raspy poppy sound...
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Randy Stys
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Offline mightymowe

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Re: Exhaust Question
« Reply #5 on: March 04, 2007, 11:08:07 am »
A friend of mine actually made an expansion chamber fo his 5.5 hp Honda on his kart and said that it made a difference in power untill they banned it.
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David Peters

Offline 300xdeere

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Re: Exhaust Question
« Reply #6 on: March 06, 2007, 10:31:20 pm »
Well Squidd has most likely forgoten more then I know but I thought I could share with you what I did with my Kohler Magnum 17hp.

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