anyone figure out if stock muffler will work???
errol
Expert
One of my friend try to put the stock muffler under the tunnel and it does NOT work!
The track did hit the muffler!
The track did hit the muffler!
good to know!!!
otis
Expert
Why would anyone want to reattach that boat anchor?
Otis
Otis
$$$$$$$$$$$$$$$$$$ already put a ton of money into this thing trying not to put a ton more....otis said:
otis
Expert
Ebay a used motorcycle exhaust. Light and cheap. If you spend the time to reweld the exhaust for an undertunnel mount do it right the first time.
Once you weight the the stocker compared to a lighter cycle exhaust versus the time spent re-attaching it you'd never want to bother doing it twice.
Otis
Once you weight the the stocker compared to a lighter cycle exhaust versus the time spent re-attaching it you'd never want to bother doing it twice.
Otis
any suggestions as to which one?
Sledboy04
Extreme
Under Tunnel Exhaust
Here's my under tunnel exhaust that I pulled together with a 2Brothers and $40.00 stock exhaust manifold off e-bay. The exhaust came off a Honda Hawk GT647. It has a 2" inlet and exhaust ID.
All I had to do was have my muffler shop make me a reducer from 1.625" to 2" to fit the inlet ($5) and I welded a bracket to the reducer( or expander?) to bolt it to bracket next to where the seat pads sit on the tunnel. I machined a aluminum bracket to bolt to the back tunnel support with 2 bolts and is held in place with a stainless U bolt. Very simple and clean.
I also powder coated the manifold with a titanium heat coating ($35) to help with any heat issues.
I've only been out for 2 trips so far, about 76 miles total. Everyone I ride with likes the sound and compliments how deep and throaty the sled sounds. In the parking lot, one 2stroker came up to me and said that that's how a real snowmobile should sound like. So far it's been a positive MOD. I have a lot more power and there has been no clearance issues- when totally bottoming out the skid, I have about 3-3 1/2" before the track would touch the outlet. I'm still dialing in the PCIII.
Here's my under tunnel exhaust that I pulled together with a 2Brothers and $40.00 stock exhaust manifold off e-bay. The exhaust came off a Honda Hawk GT647. It has a 2" inlet and exhaust ID.
All I had to do was have my muffler shop make me a reducer from 1.625" to 2" to fit the inlet ($5) and I welded a bracket to the reducer( or expander?) to bolt it to bracket next to where the seat pads sit on the tunnel. I machined a aluminum bracket to bolt to the back tunnel support with 2 bolts and is held in place with a stainless U bolt. Very simple and clean.
I also powder coated the manifold with a titanium heat coating ($35) to help with any heat issues.
I've only been out for 2 trips so far, about 76 miles total. Everyone I ride with likes the sound and compliments how deep and throaty the sled sounds. In the parking lot, one 2stroker came up to me and said that that's how a real snowmobile should sound like. So far it's been a positive MOD. I have a lot more power and there has been no clearance issues- when totally bottoming out the skid, I have about 3-3 1/2" before the track would touch the outlet. I'm still dialing in the PCIII.
Attachments
Snowman269
Lifetime Member
- Joined
- Dec 2, 2004
- Messages
- 222
- Location
- Baraga, MI
- Country
- USA
- Snowmobile
- 06' Apex
14' KTM 500 EXC "SnowBike" fitted w/ 15' Timbersled LT
07' Phazer
Anybody figure out how to make a rear mount Turbo quieter. I have an Ulmer rear mount, & I have to wear earplugs.
I either need to make this quieter, or sell it and start over.
Love the performance though, but it's a matter of time before MN, WI, or MI DNR ticket me. Colorado, don't care...
I either need to make this quieter, or sell it and start over.
Love the performance though, but it's a matter of time before MN, WI, or MI DNR ticket me. Colorado, don't care...
murph
Extreme
Stock muffler DOES work under tunnel
Saw a 2008 Nytro today with a stock muffler mounted under tunnel. The exhaust was lengthened and the stock muffler was st the very end of the tunnel with a 90 degree bend in it.
The owner told me it had been on for three hundred miles and I looked for `track contact marks.... There are none.
Saw a 2008 Nytro today with a stock muffler mounted under tunnel. The exhaust was lengthened and the stock muffler was st the very end of the tunnel with a 90 degree bend in it.
The owner told me it had been on for three hundred miles and I looked for `track contact marks.... There are none.
ruffryder
TY 4 Stroke Junkie
Would it be possible to give me some ID measurements of the quiet insert? I have a jardine muffler that I am trying to quiet down. Thanksotis said:
So Far I am not seeing any truth to the snow pack thing, Mine dumps like 2/3 back the tunnel straight out and rode yesterday in the heavy est bottomless cement like trenching snow I have rode in and it never missed a beat. I'm running a Excell header cut off right after the collector going right into my 2" in/out 3.5" OD muffler made by Coast Mfg in CA. Sounds good but it louder than stock for sure. And the muffler weighs 3.5 pounds. will try to get some pics when I have time.
verry dumb question .but what is the benefit to undertunnel exhaust? Just the ice issue???
usafracer
Extreme
I did mine so I can haul stuff with out melting it.
I did mine to clean up the tunnel. Didn't like the exhaust sticking out there and it is very nice to be able to haul a gas can right up against my Skinz seat since Im not very good at Not jumping when I have 5 gallons on back.
