custom exhaust

[eljefino]

So my new old snowblower has a design option of bathing the operator in warm yet stinky exhaust fumes, with a rear facing muffler. It also shot blue flames & backfires at the user's gloved hand when he was adjusting the discharge crank. I can dress for the weather, and snowblowing is actually still significant exercise... handling the positraction bugger. So I hit home depot's plumbing section and got a "nipple" (3/4" ID pipe with male threads on both ends) and elbow with female threads on both ends. Clearanced the beauty cover and now she looks awesome... like the snowblower from the movie "Duel", if it were filmed further north...

 

[Drew99GT]

Nice. I would have gone for a really long stack with the metal flap on top. ting ting ta ta ting ting

 

[Camu Mahubah]

Yeah, can we get a flapper on top? And a video of the beast in action. How much snow did you get recently? We got 18 inches last week. Pain in the arse. Thinking of moving to Hawaii or Tahiti.

 

[Drew99GT]

Originally Posted By: Camu Mahubah
Hawaii


Does BNSF run freight out there?

 

[JTK]

Hey good idea! That was not a user friendly OEM exhaust on that beast. It might have had a deflector on the outlet of the original muffler that shot it out the side, but who knows. Your custom job is better!

Joel

 

[eljefino]

There was a round hole in the beauty cover so the original exhaust was at least the style that's on there presently... maybe it had a little stamped deflector doodad on the output end, maybe not.

I would love a little anti-rain flap, I do have a welder, so let's see...

 

[oilboy123]

I did not know the threads out of the engine are NPT.

 

[eljefino]

On briggses they are! 7-8hp = 3/4", 3.5 hp lawnmowers I'm pretty sure are 1/2".

One could conjure up some wacky stuff, but too long a pipe would stress out the mount on the motor from the vibrations.

 

[sciphi]

Backpressure to power through the tough stuff, my friend. Backpressure.

LOL I don't know, just saying that 'cause it sounds cool!

 

[JTK]

Originally Posted By: eljefino
..I would love a little anti-rain flap, I do have a welder, so let's see...


Rain cap is the 'book' term for them. Dunno if you can get one smaller in dia than this: http://cgi.ebay.com/Exhaust-Pipe-Rain-Ca...1QQcmdZViewItem

Joel

 

[Papa Bear]

That thing is screaming for a straight pipe ....

Better yet, a megaphone.

 

[eljefino]

Regrettably, it sounds like every other briggs ever made. I was hoping the longer pipe would tune/mellow it somehow. However, it doesn't blow smoke on my lap anymore so it was worth it!

 

[Brett Miller]

Here's a trick for you....punch out the plug that is in the center of the muffler. It then becomes straight thru and has a sweet sound. I also still have a few headers laying around from my racing days if you'd like.

 

[GMBoy]

Do the fumes now blow in your face? Just looks like it went from one bad location to another. I wouldn't want to walk behind that thing with fumes blowing up to my face.