snopro
Active VIP Member
SkiDoo needs to look at how they attach their lightweight hood. No long involved process to take the hood off like we have.
Polaris 2022 Release
- Thread starter dpolacik
- Start date
Caper11
Active VIP Member
Whats it weigh? This is just the push the industry needs. This is the first true factory turbo two stroke. Polaris claims a 10% increase in HP at sea level, doo does not. Unless doo marketing is keeping quiet on the doos actual HP numbers, they may have some catching up to do.
If Polaris has a excellent first year showing like doo did, than let the games begin.
If Polaris has a excellent first year showing like doo did, than let the games begin.
skegpro
Active VIP Member
Clutch is a nice evolution. Similar to the Cat Team. Hopefully built with better quality material. Only Doos will be sporting iceburgs at the back of the tunnel now. They didn't remove enough of the cooler to prevent the running board area from icing up though. The fuel tank is only 41 litres now. That's not ideal.
Heimie
Active VIP Member
Pricing seems to be very close to Ski Doo. I did find 4 year warranty on the site, but could not determine if that was across all models. Cool if it is, though. Also for everyone claiming it's a flop because it was a quick release to respond to Doo, Burandt claims he's been testing for 2 seasons now. Seems like this should be ok, right? Polaris claims they've been working on this turbo for 8 or 9 years. That's promising! And I have to look at the clutch again, but also I wonder where the 3" as well as the 174" options went? That's a little disappointing.
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Dawizman
Active VIP Member
Burandt says NA is 419 lbs. VOHK says 18 lbs extra for the turbo. So around 437lbs dry weight on the turbo.
greenthumb
Active VIP Member
website says 2 years on boost models
Their explanation is a little cryptic:
10% more power at sea level, 50% more at 10,000.
Next paragraph says it isn't altitude compensating. Also, all claims are "Based on internal polaris testing"
https://snowmobiles.polaris.com/en-ca/snowmobile-engines/850-patriot-boost-engine/
Dawizman
Active VIP Member
I suppose they are trying to say unlike BRP, it isn't strictly altitude compensating. It makes 10% more power at sea level, and 50% more at 10k. When you do the math for ~3% loss per 1k ft, the numbers are accurate. Marketing crap, but not a stretch.
greenthumb
Active VIP Member
I would agree considering they say that it is electronically controlled.
Interesting that they used reed valves in the intake tract as compared to an electronic actuator in the doo to bypass the turbo.
The video says different pistons for the boost. 9psi on 91. I wonder if they reduced compression.
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maxwell
Active VIP Member
but you have to manually change the map on the screen?
Dawizman
Active VIP Member
Only to find your buddies.
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Dawizman
Active VIP Member
When I first heard about the Doo turbo dual intake path last year, I figured it must use some sort of reed valve. I mean why not? It's so simple. Glad to know some engineer in Polaris land thought the same thing.
rightsideup
Active VIP Member
rightsideup
Active VIP Member
gopherchoker
Active member
Anyone heard what the warranty is going to be like. Dealer is offering 3year bumper to bumper on the doo turbos
o zone guy
Active VIP Member
i missed that part greenthumb ... makes it more interesting ..i crunch numbers .. be right back... for volumetric efficiency to perform properly ... take take 9 psi x 1.6 standard ratio on turboo set by BRP ... means there using a size 14.5 turboo .. so now take 14.5/9 = 1.61 ... now take 14.5 x 9 = 130.5 Hp .. i call bull siht all around the merry go round ... how low would compress have to be ... they sent u down a rabbiT hole ... if ya get a chance check out long hair freaks post about maxwell squealing like a pig go to #23 ozone talks about the hp numbers in more detail ... thanks .. a latte .. aloha !!!
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snopro
Active VIP Member
Someone on another thread on this said 2 years
ok ozone check my math:
assuming 3% hp drop per 1000 ft
assuming NA 850 is 165hp at sealevel
assuming linear boost increases from 10% at sea level to 50% at 10,000 feet:
NA HP: Boost % Boost HP:
sealevel - 165 10 181.5
1k - 160 14 182.4
2k - 155 18 182.9
3k - 150.5 22 183.61
4k - 146 26 186.88
5k - 141 30 183.3
6k - 137 34 183.58
7k - 133 38 183.54
8k - 129 42 183.18
9k - 125 46 182.5
10k - 121 50 181.5
Am i wrong?
assuming 3% hp drop per 1000 ft
assuming NA 850 is 165hp at sealevel
assuming linear boost increases from 10% at sea level to 50% at 10,000 feet:
NA HP: Boost % Boost HP:
sealevel - 165 10 181.5
1k - 160 14 182.4
2k - 155 18 182.9
3k - 150.5 22 183.61
4k - 146 26 186.88
5k - 141 30 183.3
6k - 137 34 183.58
7k - 133 38 183.54
8k - 129 42 183.18
9k - 125 46 182.5
10k - 121 50 181.5
Am i wrong?
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