Exhaust recommendations please!

[josephbruce11212@gmail.co 262]

Hello,

 

Currently working on a 605. I have the tractor apart in the process of cleaning and repainting. I want to replace the current exhaust on my Tecumseh 6HP. Looking for ideas and recommendations. I was thinking maybe a flapper or maybe a salt n pepper....just don't know. Thanks!! Pictures appreciated!!!

[ebinmaine 74,526]

I'll start by asking... what it is specifically that you do or don't like about the current setup? 

[WHX?? 52,896]

Not sure what you mean by flapper style but I like the smaller pepper pots on smaller motors. Ones in 3/4 size are abundant and affordable. 

[josephbruce11212@gmail.co 262]

26 minutes ago, ebinmaine said:

I'll start by asking... what it is specifically that you do or don't like about the current setup? 

I actually do not mind the current setup. I'm not opposed to replacing new as is.

[josephbruce11212@gmail.co 262]

27 minutes ago, WHX?? said:

Not sure what you mean by flapper style but I like the smaller pepper pots on smaller motors. Ones in 3/4 size are abundant and affordable. 

Flapper, like the one in your profile pic

[Rob J. 1,942]

My question for the old salts here is do these motors have to have a “muffler” to run properly or can a “straight” pipe be ok? Basically a stack like on a tractor or ran underneath like a truck “straight” exhaust. I’d like to do a custom exhaust from the block with a stack and flapper but don’t want to ruin a motor to do so. My intuition says it would be fine as long as the pipe was long enough.?.?

[josephbruce11212@gmail.co 262]

@Rob J.

I was thinking of a stack and flapper set up also. Ive seen plenty of them setup, and like em!!

[WHX?? 52,896]

Ahhh OK.. stack you mean then. Far as those go only three types I would go with.

One is one of Jim Kemps... member here & 1st & 2nd pic. His are 1 inch but you talk to him bet he could make one 3/4 thd if asked or use a reducer coupling and leave a strait pipe for a tink tink.

Second is make my own. I have a bromance with @Achto  that has a baffle press. 

Close third is a Cub stack. All over fleabay, affordable and have a nice mellow tone but need to cut off a mounting tab. Here again would need to bush down to 3/4. ... 3rd pic. 

The one on my avatar got round filed .... It just didn't fit the look. Store bought and a bit loud and tall. Same tractor with one of JK's and happy as a clam. 4th pic. 

[WHX?? 52,896]

Plenty of guys run a strait pipe Rob with no issues. I find they just give a wap wap sound I don't care for. Maybe fine for a puller but not for a putt around or worker. 

Edited August 2, 2022 by WHX??

[953 nut 62,133]

 

@jimkemp makes a great muffler, I have one on a 953 and love the mellow tone. I used a 1" X 1/2" X 1" black iron pipe "Tee" with a 1/2" pipe plug drilled out to 1/4-20 to support that muffler. Another 953 I had a Harley muffler on, it is a bit heavier and slips over a 1 1/4" pipe, very mellow and looks good. My GT-14 has a Tractor Supply IH muffler (one inch) with a rain cap on it, when you throttle down it backfires, sort of cool for an old hotrodder like me.

[Heatingman 971]

1 hour ago, 953 nut said:

 

@jimkemp makes a great muffler, I have one on a 953 and love the mellow tone. I used a 1" X 1/2" X 1" black iron pipe "Tee" with a 1/2" pipe plug drilled out to 1/4-20 to support that muffler. Another 953 I had a Harley muffler on, it is a bit heavier and slips over a 1 1/4" pipe, very mellow and looks good. My GT-14 has a Tractor Supply IH muffler (one inch) with a rain cap on it, when you throttle down it backfires, sort of cool for an old hotrodder like me.

I like that burgundy type color on the horse in the top photo. Was that a repaint many years ago, or how it came? 

 

 

[Achto 29,798]

11 hours ago, WHX?? said:

Plenty of guys run a strait pipe Rob with no issues.

 

Strait pipes are only beneficial when running wide open throttle. Something that a small engine rarely does under normal operation. Turbulence in the exhaust pipe benefits the performance of an engine through 95% of the operating range

 

Below is a pic of the baffle for the stack that I made for one of my tractors.

.   

 

Looking down the end of the pipe shows the louvers that causes the exhaust turbulence  

 

 

Finished product installed. Yes it's tall, keeps the fumes out of my face.

Edited August 3, 2022 by Achto

[ebinmaine 74,526]

6 hours ago, Achto said:

Finished product installed. Yes it's tall, keeps the fumes out of my face.

 

Love the look, and the practicality.  

[Pullstart 68,164]

4th option Uncle Jim… is a Cherry Bomb of course!

 

 

[953 nut 62,133]

10 hours ago, Heatingman said:

I like that burgundy type color on the horse in the top photo. Was that a repaint many years ago, or how it came? 

 

 

I don't think it had been repainted, just a mix of RED paint and surface rust. If allowed to age to perfection this is the color it will eventually achieve.            

[The Freightliner Guy 1,363]

I was going to say you should make an exhaust like pullstarts putt putt has but he beat me to it 

[Wild Bill 633 885]

I have always wanted to try a Supertrapp on a small engine. They make a 3/4" NPT threaded adapter, P/N 3S-0750T and you add 1 diffuser disc per 3HP.