Summitizer
Active VIP Member
Just looking to see who is still dealing with the over rev issue on the 2021 turbo.
Over reving on the 850T
- Thread starter Summitizer
- Start date
snopro
Active VIP Member
Honestly can't say here. I put a Dynamo clutch kit in at new. I did ask my dealer and he told me only one complaint in their fleet?
Teth-Air
Active VIP Member
Jim has the same kit as you and had to add a bunch more weight over the initial recommendation. Maybe yours isn't making power?
snopro
Active VIP Member
Well first off I don't have a house on the hill so Jim's sled is almost miled out and I'm sill on breakin. I honestly haven't had an opportunity to really work it hard in my 2 day trips as snow was not optimum to say the least. From watching Jims vids you guys are in blower pow every trip.
Teth-Air
Active VIP Member
Fair enough. I believe Jim's next ride will be day 29. Lucky that blower snow is only a few km's up and not a 30 km trail ride in or he would need 2 sleds per season.
snoflake
Active VIP Member
WTF is everyone whining about the doo turbo over revving. Just add some clutch weight like you do to every other sled that needs a little clutching. If it was a Polaris or arctic cat someone would be bragging about how they got a sled with a peppy motor and had to add weight.
SnowJunkie82
Active VIP Member
I would buy this statement on a NA sled, but a sled built and advertised to maintain HP from 0 to 8000 feet to have the clutch weight as far out as it was is a head scratcher. The aftermarket clutch guys must have paid off the Doo assembly line workers to slip in some lighter weights to bolster their sales! That said I would highly recommend Dynamo Joe’s clutch kit to anyone looking for a change. Couldn’t be happier with change in performance. Whine Over!
canuck5
Active VIP Member
Gotta time your trips with snow fall today’s forecasting tools and elevation forecasts are pretty unreal. I realize is may not work with some people’s timing but we literally never have bad snow doing this
MK4TDI
Active VIP Member
Hahaha. And why would one expect any different from all the other sleds they've purchased ?
Doesnt surprise me one bit, been doo's track record for years, there is always gains to be had from stock clutching, my 14 XM needed to be fine tuned as did my sidewinder, I budget it un when I buy.
Same with buying a $50k pickup with garbage lighting, it meets the minimum "specs" but is still chit, I shouldnt have to spend $500 fixing the lights on an $80k msrp truck, but I did it anyways because rely on that truck do get me where I need to go. Sled is the same thing.
Honestly it's kinda like relying on the government to be efficient.... you know uts bot gonna happen, so may as well take care of it yourself.
maxwell
Active VIP Member
The difference is BRP didn’t leave any adjustment on the table. Years past you could be 200rpm high and drop to clicker 2 and Cary on with life. This year they have left customers with no solution and no adjustability. Sure it’s a simple fix but the parts to do so should have been included with the snowmobile. Not all of them are doing this but they should all come with both sets of bolts.
There is also nothing wrong with the factory calibration, it works, it gets great belt life.
There is also nothing wrong with the factory calibration, it works, it gets great belt life.
Pedaling pete
Active VIP Member
Id gear it up a tooth.
Mine only over revs at around 5500-6500 ft elevation. Once i get higher up on the mountain then it's bang on. I'm gonna add weight with those bolts, simple fix. When it starts over reving i just have to modulate the throttle a bit and just not pin it everywhere. I'm not sure on the whole gear down thing, wouldn't that slow your track speeds down? This thing is pretty much perfect except for a bit of ever rev.
Teth-Air
Active VIP Member
Why would this be happening if the HP is the same at all elevations below 8000 ft? This can only mean that the mapping is off for this elevation? Maxy I'm sure you have an answer?
Pedaling pete
Active VIP Member
I said gear up, not gear down. If you gear down you'll really be over revving! Lol
If you gear up it will load the engine more and you wont have to mess with clutching.
But hey what ever works for you
If you gear up it will load the engine more and you wont have to mess with clutching.
But hey what ever works for you
oler1234
Active VIP Member
Does anyone commenting in this thread actually own a 850T... further to that actually provide the post a sensible response. **** your guys just need to get out and ride!
984 Ramps and 2mm bushing setup here. 8000rpm all day. Clutch temps at 45-50c in headlight deep.
984 Ramps and 2mm bushing setup here. 8000rpm all day. Clutch temps at 45-50c in headlight deep.
Pedaling pete
Active VIP Member
Yeah fk just ride, bounce it off the rev limiter all day and drink a case of bush! Lmao
turboetech
Active VIP Member
Brownstar is 100% correct gear it up one tooth on top gear and you will notice a huge difference in track speed....works for me...
turboetech
Active VIP Member
Or spend another 500$$ for a clutch kit and make someone else rich.....simple fix
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