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HydroHarold

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Discussion starter · #1 · (Edited)
Stinky exhaust from your Kawi riccocheting off your front tire making you sick? Well folks, gag no more! Using 1 1/4" chromed brass sink traps you too can make a nifty muffler extension that gets all the hot gasses (engine gasses only) away from your right front wheel.

Remove the expanded section of "J" bend to reduce diameter of pipe to 1 1/8", slip over current muffler outlet "stub". Allowing for front axle upward movement and wheel steering angle for left turns mark outside of bend. Cut chrome pipe in a neat scarfed angle, clean up rough edges. Cut four (4) 3/4" long slits for clamping in muffler end of extension. Install on muffler with "Made in U.S.A." stainless worm gear clamp.

Enjoy cleaner air and classy look all in one half hour of pleasant home fabricated tractor modification.
 
Discussion starter · #2 · (Edited)
One more view of finished product showing worm gear clamp and one of what should be left over from original "J" bend.

Editorial comment directed toward John Deere design engineer who thought original muffler outlet design was "a good thing"! :fing20:

:bananapow
 
#4 ·
I like it! I might try it!
 
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#5 ·
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Discussion starter · #6 ·
Believe me, I tried everything I could to get a vertical stack setup... there's just not enough room from front wheel. I jacked the front up so I could move the axle up and down and turn the wheel and no matter where it would go the wheel would hit it. I was pleasantly surprised at how well the chrome stood the heat. It's holding up very well.

(...now maybe if I "limit" the up and down axle travel..... and put a limit stop on the steering linkage.... ) :ROF
 
#7 ·
Ok, I'm not a GX335 owner or even an operator, but I peeked anyways. Very nice cost effective easy to do solution. And it should be useable in a similar fashion on LOTS of different tractors.
 
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Discussion starter · #8 ·
Right you are Joe! I didn't mention other makes models as I didn't want to be responsible for an improper purchase of the wrong size piping. But good ol' plumbing supply aisles are a treasure trove of exhaust pipes for small engines. My Gravely "L's"
had vacuum cleaner wand stacks for a while but the chrome over steel couldn't take the heat. Dang cheap Hoovers! :ROF
 
#10 ·
I peeked, now I've got another item on the to do list. I'm sure the outlet on my Kohler CV15 is smaller. But it just dawned on me I could cut "fingers" in the pipe to clamp to the muffler outlet tube.

If that all works out maybe I'll get really brave and mount the small lights I've had laying in the cabinet over the deck on each side and one in back. I think I'm going to run the back light through the RIO switch so it is only on when I back up. Might as well use the switch for something. (I think it's a normally open switch on mine, but I have a 12 Volt relay ready just in case it turns out otherwise.)
 
#11 ·
Thankyou Uncle Hydro!

Turns out my muffler outlet was only a hair under 1 1/8" dia. The heat shield and bumper mount made for some work getting the clamp connected together behind them. But after doing some yoga stretches and using a few persuasive words it is goodntight. I did cut notches to help it tighten using my die grinder with a cutoff wheel. I made the first cut (end with the notches) with the hacksaw and the final outside cut with the cutoff wheel. Being as I was too lazy to look for my sharpie I just eyeballed it. Using the cut off wheel actually worked better than the hacksaw for a neat cut.

Image


Definitely a tight spot. The only way I see to do a vertical would be to go toward the front and side then up. I also had the wild idea of plumbing it into the front bumper and turning it so the curved ends pointed up. Then could attach vertical extensions to that. But until I get a welder either way looks to be un-doable for now.

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Fortunately there was already a label on the bumper frame to warn me the area is hot to the touch.

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I mowed for about an hour and touched the area that I'm not supposed to. I could hold my fingers there for several seconds so the paint should not get toasted too bad. It's hard to see from the picture, I cut it to throw the exhaust slightly away from the label area but not so far as to hit the tire. The best part was I no longer have one hot foot out of the four. I always figured that tire would be the one if any to dry rot and blow out at some point. Also keeping that heat and fumes away from me is good too.
 
#12 ·
hello

this is truely why M.T.F. is one or the better sites , we all think alike (good or bad) !!!! and we share

silver hair
 
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Mark / Ohio
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