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Sidewinder motor fixed...Sled blacklisted...your opinions needed

Discussion in 'SideWinder Trail Talk' started by kinger, Nov 20, 2020.


  1. kinger

    kinger VIP Member VIP Member

    Messages:
    6,569
    Location:
    Clear Lake, IA
    Many of you followed my saga with failing SW which was mainly overheating and going into limp mode.

    Quick recap:
    -Bought a crate 17 BTX SE in March of 2018 paid $12K IIRC
    Freak string of blizzards in Iowa in April every weekend 1' of snow and put 189 miles on it banging ditches and fields breaking it in as recommended, no issues.

    -Summer comes it goes to Ulmer for 280hp tune, EVO bullet exhaust flash, 4 wheel kit, flares, and dyno. Made great power closer to 295hp

    -Winter 18/19 comes excited for first ride put 100 miles on locally in crap snow doing maybe 10-20 miles a day no issues.

    -Changed to Sandale 2.5" stock muffler mod EVO was too loud
    Drove 6 hrs and put on 100 miles then OVERHEAT and it wouldn't stop. All available trailside tips, tricks wouldn't fix. Drag it back home disappointed, a day early, ruining my trip and wasting the other riders in my group putzing with it for the better part of 2 days.

    -Take to dealer March -July, Head is cracked from a defective casting, they ordered an entire new motor from Yamaha but had to reassemble on site, their first one. Yamaha wont sell long blocks. Asked if we upgrade to ARP head studs they agreed and installed.

    -No snow locally winter Jan 2020 drove 6 hrs ready to ride! Broke after 40 miles overheat. 1 day of futzing around with bleeding, etc no change. Drag back sled 2 days early disappointed as it may have been my last chance to ride with my 70 yr old Dad.

    -Back to dealer Jan-July - Assessed head gasket failed and that ARP head studs were the cause, Yamaha demanded go back to stock. New motor parts that are oil based that contacted coolant all replaced as a precaution. I think they didn't TQ them correctly and used the stock TTY process vs the one specific for head studs that I reviewed with the dealer ad nausium.

    -Sled is back with 588 miles on with "new" stock motor now.

    ---End recap---

    That brings me to today, clearly this was string a events not all related to yamaha, not all related to me, or anyone else. I don't want to debate. Yamaha has been good with fixing the machine, so its water under the bridge.

    Here is my question for the masses.... I went to trade the sled in, the only dealer that would take it offered me $4K for this sled PLUS $10,980 to get a 21 SW, to which I almost shat myself... I do have a 4 yr YES warranty on it but only a couple grand left until I get to the purchase price. Not sure if Yamaha would be sticklers on enforcing the "YES only good until repairs meet original purchase price" fine print or not. No other dealer would even take it after running the VIN. I can't in good conscience sell the sled privately until it can demonstrate some reliability miles after the new motor.

    So I am stuck with it....

    Would you either?
    A. Flash back to stock and barely ride it try to get to 1000 miles then try to sell private party as "reliable"?
    B. Keep the existing flash and ride it like I stole it again and see if 3rd time is a charm?
    C. SEND IT! Stop yamaha motor repairs, take motor apart, put in head studs correctly, mod the living wee out of it myself and shoot for 300+ hp like I wanted to in the beginning!

    Discuss! :beer:
     
    Last edited: Nov 20, 2020
  2.  

  3. Teamblue4

    Teamblue4 Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,079
    Location:
    Il.
    Take the $10,000 from the dealer.
     
  4. sideshowBob

    sideshowBob Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    941
    Location:
    North West Ontario
    I have been following your progress on this sled and issues...what a journey.
    Not sure what you meant on trade in deal?
    If the trade in deal is good I would let it go otherwise I would run it stock for this season, enjoy the sled, and if all is good flash it again and really enjoy!
     
  5. kinger

    kinger VIP Member VIP Member

    Messages:
    6,569
    Location:
    Clear Lake, IA
    No the dealer said MY SLED + $10,980 to get a 2021 SW. Essentially giving me less then 4K for mine after I paid $12k
     
  6. mario750

    mario750 Extreme

    Messages:
    75
    Location:
    New York
    Country:
    USA
    Snowmobile:
    LTX SE
    I would not accept less then 4 k on trade, I would probably fix / replace motor in sled on my own and ride it .
     
    kinger likes this.
  7. kinger

    kinger VIP Member VIP Member

    Messages:
    6,569
    Location:
    Clear Lake, IA
    Its 'fixed' right now. Ready to go with 0 miles. My problems seemed to start with the flash. Hence my questions.
     
  8. ClutchMaster

    ClutchMaster HUGE Member VIP Member

    Messages:
    2,997
    Location:
    tomahawk
    Country:
    USA
    Snowmobile:
    2015 Viper 270 hurricane,
    2002 Viper W/162 A.C. skid, SRX pipes &CDI, 780 BB
    LOCATION:
    Wisconsin
    Fu€ that its fine.

    SEND IT!
    Put those head studs in and let her rip! Do the studs yourself, if you want it done right do it yourself. Go over the sled with a fine tooth comb. Check everything from hose clamps, intake boots, chassis bolts Ect. The sled will be fine, it’s brand new, human error has caused you all your pain.

    Total BS they have Blacklisted the sled BTW
     
    Frozenstiff and kinger like this.
  9. mario750

    mario750 Extreme

    Messages:
    75
    Location:
    New York
    Country:
    USA
    Snowmobile:
    LTX SE
    I would keep it flashed and ride it then. I think that tune is problem. Mine just blow up from detonation in middle cylinder
     
  10. kinger

    kinger VIP Member VIP Member

    Messages:
    6,569
    Location:
    Clear Lake, IA
    3 SW with similar tunes all blew up. Mine didn't actually 'blow' like no mechanical parts broke except the defective head.

    I'm leaning towards stock flash and see if it holds together. I suppose I need to worry about driveshaft bearings and other crap now letting loose, I have been focused on the motor haven't even looked at my own list I wrote in the stickies.
     
  11. SledFreak

    SledFreak TY 4 Stroke God

    Messages:
    5,059
    Location:
    Ontario. Canada
    Country:
    Canada
    Snowmobile:
    Current 2020 ThunderCat, 2017 ZR 6000 Roger Skime, gone is the 2016 ZR 4000 RR, 2012 MXZ 1200 Renegade, 2010 MXZ 1200, 2009 Nytro XTX, 2006 Apex GT, 2003 MXZx 800 REV, etc..
    This story is always a reminder of what COULD happen when modding sleds. You took the chance to play with the motor and LOST. Even though 95-99% of the time, most would never have issues, with these flashes. IMO, I am surprised Yamaha even warrantied it!! I am not blaming you, because I have modded many sleds. Most have worked out, some have not. If it was me, I would leave it stock and ride it for the year, trying to put alot of miles on it (1500+) to ensure there is nothing wrong with it. Sell next season.. The biggest question, I would like to know is what does Ulmer think happened?

    If its the tunes, then their is one supplier, that has not done enough testing. It sounds like the head lifted, from an over boost, (cause by boost leak) but I am no expert!!!

    One think is for sure, is that tune would be gone!!
     
    Last edited: Nov 20, 2020
    MrSled likes this.
  12. mario750

    mario750 Extreme

    Messages:
    75
    Location:
    New York
    Country:
    USA
    Snowmobile:
    LTX SE
    I think that you may have a defective motor/ parts from start and whoever worked on sled didn’t do any good in diagnosing or fixing it properly. Change a tune from different vendors if you’re thinking that’s problem.
     
  13. mario750

    mario750 Extreme

    Messages:
    75
    Location:
    New York
    Country:
    USA
    Snowmobile:
    LTX SE
    Like he said you were lucky that Yamaha covered warranty work on tuned sled. They refused to do so on my sled.
     
  14. Alsim

    Alsim Expert

    Messages:
    374
    Country:
    Canada
    Snowmobile:
    LTX SE 2018
    Flash back to stock, run it this winter and sell it next year to a particular with ramaining waranty. It will be prouve the reliability of the new engine and you will save money this winter for your next trade
     
    kinger, Yamajon1, STAIN and 1 other person like this.
  15. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    19,364
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2020 Sidewinder SRX
    I would remove the flash, you can easily sell that for more then 4g, there are a lot of wrenches that would love to take it off your hands..
     
    staggs65 and kinger like this.
  16. STAIN

    STAIN Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    2,682
    Location:
    Vermont
    Country:
    USA
    LOCATION:
    Vermont
    I totally agree with this!!!!! If it was "fixed" by an authorized Yamaha dealer than that dealer network should have no problem with taking it in trade. If they don't want it because of the tune than that's another story. Did you offer the sled in trade totally stock? would it be any different?
    I would run it stock for a bit to make sure it is right then mod it.

    Man, I have never heard of a vehicle being "blackballed" after warranty work. That is what the warranty is for.....B.S!!!!!!!
     
    Turboflash, yamamarc and ClutchMaster like this.

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