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Ski-Doo: TURBO Turbo discussion for Ski-Doo aftermarket turbo sleds
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  #1  
Old 01-25-2019, 06:14 PM
utah_sledder utah_sledder is offline
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Default 850 Boosted failures and issues

Iím looking for actual info from the boost community on 850 boost related failures. This isnít a post trying to bash anyone but rather to gather some knowledge that might help us make some good decisions.

I have a boosted 850. Its really fun. Brand doesnít matter. It runs really well...buttttt I get nervous.

Talking to the big bore manufacturers and they will tell ya that every boosted 850 ever created has burned down....so go buy a big bore.

The turbo guys will tell you. Nope never heard of a single 850 burning down or melting a piston on boost.

How have your boosted 850ís been holding up? Can they handle long (really long) full throttle pulls without heat soaking or melting a piston?
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Old 01-25-2019, 09:21 PM
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Out of three Boondockers that local dealer has sold/installed, two have burned down within 100 miles. One was a 19 850, one was a 17 as I recall. Boondocker refuses to address it.
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Old 01-28-2019, 01:33 PM
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MPIís kits are full of electrical gremlins. I would definitely avoid anything from MPI
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Old 01-28-2019, 02:09 PM
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and the cost to fix this 850 engine will give u nightmares lol
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Old 01-28-2019, 04:58 PM
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Quote:
Originally Posted by Flydanner View Post
MPIís kits are full of electrical gremlins. I would definitely avoid anything from MPI
That's a really productive first post. I'm sure being it is your first post and all, everyone on Snowest is going to take your advice and never touch anything MPI. Do you happen to be Silber's new web guy, since their last one got his feeling hurt in the Axys forum and hasn't been seen on here since?
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Old 01-28-2019, 08:34 PM
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Chalk one up in his favor because a buddy put an mpi on his 19 and it came home on a rope. All he told me was something electrical. Fixed now and as chadly says, it runs flawless now. I don't know if it was sled woes or turbo kit woes.
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Old 01-29-2019, 12:30 AM
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Get use to it that the big bore shops like to bitch about the turbo kits. Been down that road with two ďhighly respectedĒ big bore guys on the old 800 etec. One told me I better have a back up sled and tow rope for my new turbo etec.....this was back in 2012 mind you and I am still riding the same sled without any type of engine failure. Other guy said his BB would out perform a turbo in technical riding any day and he just didnít care to mess with them.....few years later he was selling MPI kits....hmmmm.

I will be installing a turbo on a 850 for next season. The course followed with the old 800 Etec turbo remains the same. Fuel the engine with sufficient octane for boost and elevation. Dial in fuel map for the best AFR. Load engine properly with correct clutching and gearing.
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Old 01-29-2019, 04:22 PM
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Question Silber 850

Ive got about 600 miles on an 18 silber 850 at 7lbs,(shr adjustable ramps loaded full @ 8k to 11k feet) for the most part its been awesome, sometimes it'll sputter on top end, but can usually be fixed with a clicker adjustment, but now ive got a low end sputter thinking maybe reeds,but when running right its comes on fast , smoothest turbo ive ran.


update, it was reeds, put in force turbo reeds, 200 miles so far so good. also did the grip n rip alignment, every 850 should do it, so much better, tried a couple 45 second to minute long pulls and belt was fine, love this setup!!!!

Last edited by turbom1000; 03-10-2019 at 02:47 PM.
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Old 01-29-2019, 06:01 PM
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Quote:
Originally Posted by Chadly View Post
That's a really productive first post. I'm sure being it is your first post and all, everyone on Snowest is going to take your advice and never touch anything MPI. Do you happen to be Silber's new web guy, since their last one got his feeling hurt in the Axys forum and hasn't been seen on here since?
No itís coming from the last 850 with an MPI kit on it that typicaly rides with us has had to be towed out 3 of the last 6 days riding. Itís ate 3 coils and one TPS. Yet MPI just say I donít know not our fault. The only real help we have been able to find is from Big John. If you werenít such a keyboard warrior and actually spent some time on the mountain talking to other riders youíll see that weíre not to only ones facing these problems. So calm down little man, I know being behind the keyboard gives you the courage to say what ever you want with out getting you teeth knocked out.
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Old 01-29-2019, 06:33 PM
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Old 01-29-2019, 07:33 PM
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Old 01-29-2019, 09:00 PM
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Old 01-29-2019, 09:27 PM
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Old 01-29-2019, 10:00 PM
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Old 01-29-2019, 10:57 PM
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Old 01-30-2019, 09:45 AM
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Old 01-30-2019, 10:36 AM
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Old 01-30-2019, 10:42 AM
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Old 01-30-2019, 10:47 AM
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Old 01-30-2019, 08:24 PM
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Old 01-30-2019, 08:40 PM
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Old 01-30-2019, 09:02 PM
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Old 02-01-2019, 05:00 PM
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Old 02-01-2019, 06:16 PM
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