Custom Exhaust

[JoeMeg]

What is our mat'l of choice for fabricating an exhaust system for say,a 23hp Kohler. Thanks

Joe.

[Mike]

Joe, here is a post on what I used on Jennifer's Briggs' exhaust with some links to where I purchased pieces: http://www.6x6world.com/forums/max-a...html#post50025

[JoeMeg]

Thanks Mike, thats the type of info I was looking for. Probably wouldn't hurt to be a little more specific when posing a question though. Also need to "hone" my skills of using the search function. Thanks again.

Joe.

[JoeMeg]

So the tubing is basicly 1.25" O.D., 16 GA., 300 series stainless steel? Thanks.

Joe.

[Mike]

I used the 16 GA. mild steel. 1.25" O.D. from the engine into a 2 into 1 collector. Then 1.75" from there on out.

[lewis]

Ihttp://www.robertsonstorquetubes.com/

Joe here is one of the sources i used. They actually have a twin cylinder vangard pipe prefabed system for horizontal and vertical engines.

Kart Pipes - Briggs 10HP Go Kart Pipes
Here is a picture of their set up.

Hope this helps and they are very easy to work with.

[JoeMeg]

I used the 16 GA. mild steel. 1.25" O.D. from the engine into a 2 into 1 collector. Then 1.75" from there on out.

Thanks Mike, so you bent the 1.25" yourself?

Joe

[JoeMeg]

Thanks Lewis, thats more of what I'm looking for. I like the short sections, would think it gives more options of routing.

Joe.

[lewis]

Thanks Lewis, thats more of what I'm looking for. I like the short sections, would think it gives more options of routing.

Joe.

Correct, i wish i would have found them first for my engine exhaust.

[Mike]

Thanks Mike, so you bent the 1.25" yourself?

Joe

No, I bought the pieces pre-bent, and then cut them to get the routing I need and then tacked and welded them. I have a post somewhere telling what I did.

Here it is: http://www.6x6world.com/forums/max-a...html#post50025

[JoeMeg]

Thanks Mike, begining to remember bits and pieces of conversation you and I had I believe at Busco about the Max. I seem to remember you mentioning just butting the pipes up and welding around but didn't recall how the bends were done and what specific mat'l was used.

Joe.

[jpswift1]

Hey Joe, I got a brand new 23 Kohler Command for my Superchief too. I'm in the same boat as you are when it comes to exhaust. I'm contemplating a couple different options at this point. I'm probably going to have an opening on the engine cover like the Attex Tomahawk did and then route the exhaust out there. This way I can use my tracks too. We'll have to kick this idea around some more and think what we can come up with.

[JoeMeg]

Jeff, hows it goin? In the "Attex 6x6 Picture Thread", first post ,2nd pic. of ST/295. The engine cover on mine is very similar/identical to that. The rect.holes are cut out bigger yet. I vision setting up the exhaust to exit up thru the left side opening in a manner which will allow the cover to swing in its original hardware to open(again,vision). I see the right side opening being used for some type of oil cooler and compartment ventilation set up with the components mounted in a frame to remain stationary when the cover is raised(again,vision). Those dandy tube pieces Mike and Lewis turned us on to should make up for some lack talent,now I just gotta figure out how to do everything else lol.

Joe

[TripleTriple]

I'm almost done with an attempt at an exhaust. I'll post some pics if I'm happy with it... It's kinda an experiment ("mad scientist!") 3 chambers- the two out side chambers recieve the exhaust from each port on the engine. Then the exhaust is routed from each chamber directly to the center one via 3 pipes with holes all over them. Exhaust is scavanged from the center chamber through another larger pipe. It should have a little back pressure and retain enough heat to "pull" the gasses out. Should know tomarrow evening what it sounds like.

[jpswift1]

Jeff, hows it goin? In the "Attex 6x6 Picture Thread", first post ,2nd pic. of ST/295. The engine cover on mine is very similar/identical to that. The rect.holes are cut out bigger yet. I vision setting up the exhaust to exit up thru the left side opening in a manner which will allow the cover to swing in its original hardware to open(again,vision). I see the right side opening being used for some type of oil cooler and compartment ventilation set up with the components mounted in a frame to remain stationary when the cover is raised(again,vision). Those dandy tube pieces Mike and Lewis turned us on to should make up for some lack talent,now I just gotta figure out how to do everything else lol.

Joe

Joe, We'll have to share some ideas in person at Busco. I'm going to be finishing up this project this summer. I might even use a stock Kohler muffler like this one:

Kohler Engine Muffler fits Command 18-27hp twin - eBay (item 360333524131 end time Jan-11-11 09:35:44 PST)

By the way, I'm using a stock Max II wiring harness for the Kohler so that should really help to simplify things when it comes to the electronics.