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What in the world!?! Exhaust fail

Discussion in 'FX Nytro General Talk' started by Kurt J, Jun 15, 2019.


  1. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    I bought a 2008 Nytro recently with lots of aftermarket upgrades, and the owner claimed it had "a pipe". There was an MBRP decal on the tunnel, but the muffler appeared original. Didn't matter to me, so I bought it anyway.

    Now I'm going through the entire sled verifying it's ready for next winter and find the entire exhaust is a complete scrap pile. The muffler has been opened, and welded back pretty well, which looks like a Schmidt Brother's job, but the baffle inside is detached now.

    The header pipe WAS aftermarket, looking vaguely like the Aaen pipe, but it obviously failed in some way, and was reworked at a muffler shop by a child in the dark on meth. It's falling apart, again.

    One flex pipe is broke, and the bolts to remove it and all three clamps snapped. FML, right? The donuts were mostly toast, too.

    Now the job of removing the engine to remove the broken bolts in the cylinder head. Just great.

    At least there's a good note. I bought replacement flex pipe, clamps, copper donuts (from China on eBay) and stock header pipe. For the muffler, I sourced an appropriately sized stainless steel muffler, and made a welding fixture to attach mounting points for it to bolt in just like the original, with the stock muffler shrouds. Crossing my fingers that it will run well and be quiet enough to be legal in Michigan.

    Any suggestions on splitting the Nytro in half to remove the broken bolts?

    Anyone have experience with using a car muffler? I have a chambered 4×9 muffler with 14" long body.
     

    Attached Files:

  2.  
  3. Brotherdan

    Brotherdan Pro

    Messages:
    170
    Location:
    Belmont,maine
    Country:
    USA
    Snowmobile:
    2003 rx1er 136"mono 2 rear suspension conversion,muffin works extension, apex seat,apex bars,8"lake effect riser,gytr frontshocks,yamaheater,rocks ridelite,1987 enticer 340ltr 2100miles,1984 enticer 340,1996 wolverine 350,big wheel kit,winch,racks,cai
    Do you have any pics of the bolts that are broken off in the head?many options to try before I would pull the engine
     
  4. TrueBlue

    TrueBlue Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    457
    Location:
    Franklin Park, IL
    Hope you got a real good deal on that pile of scrap.
     
  5. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    There's about 5-6mm of bolt sticking out. Barely enough to grab with vice grips. No room to drill with the tunnel in the way.
     
  6. cannondale27

    cannondale27 Moderator Staff Member Moderator Vendor Lifetime VIP Member VIP Member

    Messages:
    18,636
    Location:
    Manitowoc,WI
    Weld a nut on the broke studs
     
    jimbur and Kurt J like this.
  7. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    The price was right. It came with Skinz arms, Float 2's, Fox Zero Pro, 1.5" track, bars/riser, skid plate, Powder Pro's, Powermadd handguards with gauntlets, a bunch of Schmidt Brother's stuff, and a newer model subframe. Somebody spent some money on this sled.
    I'm selling the powder pro's, bars, riser, and handguards. Already have C&A race skis installed, new composite handguards, and new stainless steel handlebars on new risers. Replaced the short windshield with a mid height with side deflectors, and added a windshield bag and small bag mounted to the tank shroud. Among other things, I built custom bumpers for the front and rear. Also added a heating element to the seat, and wired the sled for my heated boots. It's going to be a nice sled when I get done with it. Screenshot_20190616-212108.png Screenshot_20190616-212042.png
     
  8. Brotherdan

    Brotherdan Pro

    Messages:
    170
    Location:
    Belmont,maine
    Country:
    USA
    Snowmobile:
    2003 rx1er 136"mono 2 rear suspension conversion,muffin works extension, apex seat,apex bars,8"lake effect riser,gytr frontshocks,yamaheater,rocks ridelite,1987 enticer 340ltr 2100miles,1984 enticer 340,1996 wolverine 350,big wheel kit,winch,racks,cai
    If you have room or don't have a welder these work awesome!need to use a good brand such as the irwin.the cheaper versions don't work as well.
     

    Attached Files:

  9. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    Time for an update. I've replaced the entire exhaust, with original flex pipes, Chinese "copper"(yellow brass) donuts, original header pipe, and home built stainless muffler. It sounds great, and fits like OEM. I purchased an automotive muffler off eBay, and welded stainless mounting brackets in place to use all the original mounting and hardware. With the rear plastics in place, it looks 100% stock.
    This sled is getting some serious love. It's been torn down to nearly a bare chassis, engine removed, new arm bushings, completely rebuilding the skid, cleaning, lots of stainless fasteners, beefing up weak points, replaced track clips, and much more. I also added a heated seat and brake lever. It's a shame I don't plan on keeping it, and have my eye on a SR Viper already. It's going to be a superb trail machine.
     
    yamadoo likes this.
  10. jimbur

    jimbur Pro

    Messages:
    183
    Location:
    Bernville Pa
    Country:
    USA
    Snowmobile:
    09 NYTRO XTX
    08 NYTRO RTX
    09 FX NYTRO
    07 PHAZER
    LOCATION:
    Pa.
    A couple of rides and you'll be keeping it. That's my guess.
     
  11. yamadoo

    yamadoo Yamadoo is a snowmobile ' aholic'. Lifetime VIP Member VIP Member

    Messages:
    3,140
    Location:
    SE MN work North shore Superior play
    Country:
    USA
    Snowmobile:
    15 Viper STX DX red/white
    13 Apex XTX 45 anniversary RED/WHITE/BLACK
    10 Vector LTX Blue
    11 Venture Gt
    86 SnoScoot(2) for grand kids
    Hope you absolutely love it. It is essentially your work that made it a great sled!
     
  12. AftonJay

    AftonJay Extreme

    Messages:
    72
    Location:
    Northern Michigan
    Country:
    USA
    Snowmobile:
    2005 Warrior, 2009 Nytro XTX and Arctic cat puma for the kids
    LOCATION:
    Afton Mi
    what seat kit did you use?
     
  13. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    The heater mat is OEM for a car. I operate a modeling lab for an automotive seating company, and help develop the seats. It's nice to have access to a lot of specialized components, like massage inserts, cooling systems, etc.
     
  14. Hooray!

    Hooray! TY 4 Stroke Junkie

    Messages:
    617
    Location:
    Maine USA
    Country:
    USA
    Snowmobile:
    2009 Yamaha FX Nytro XTX
    1998 Yamaha VMAX 700 XTC
    So massaging heated (cooling) Nytro seats could be in our future?! Nice...
     
  15. Kurt J

    Kurt J Newbie

    Messages:
    24
    Location:
    Michigan
    Country:
    USA
    Snowmobile:
    Nytro
    Nope, just in MY future
     
  16. Hooray!

    Hooray! TY 4 Stroke Junkie

    Messages:
    617
    Location:
    Maine USA
    Country:
    USA
    Snowmobile:
    2009 Yamaha FX Nytro XTX
    1998 Yamaha VMAX 700 XTC
    Lol! What happened to sharing!
     

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