Boost 850

[Dynamo^Joe]

Hiya Gents.
Does the Boost compensate for elevation like the skidoo factory turbo does?
or
Does that engine too, lose 5hp for every 1000 feet increase?

 

[Sheetmetalfab]

Hiya Gents.
Does the Boost compensate for elevation like the skidoo factory turbo does?
or
Does that engine too, lose 5hp for every 1000 feet increase?

It compensates.
up to 10-12000' i think.

 

[Dynamo^Joe]

What I read last year was up to 10k feet.
I looked around Polaris again and found the video.
Puts 10% more power than the Natural at Sea level, then maintains that horsepower to 10k feet.

https://www.polaris.com/en-ca/snowmobiles/innovation/snowmobile-engines/850-patriot-boost-engine/

Over a few years, I made a clutch kit for the 850 boost and tested with guys 200~260 pounds.
Im making a new setting sheet, following the way Polaris makes their clutching sheets. With that power info, now i figured out clutch weight for a guy at 330# pounds.

 

[Ultrasauras]

how about a 9 r kit?

 

[Sheetmetalfab]

What I read last year was up to 10k feet.
I looked around Polaris again and found the video.
Puts 10% more power than the Natural at Sea level, then maintains that horsepower to 10k feet.

https://www.polaris.com/en-ca/snowmobiles/innovation/snowmobile-engines/850-patriot-boost-engine/

Over a few years, I made a clutch kit for the 850 boost and tested with guys 200~260 pounds.
Im making a new setting sheet, following the way Polaris makes their clutching sheets. With that power info, now i figured out clutch weight for a guy at 330# pounds.

Nice!

 

[ullose272]

how about a 9 r kit?

no. The boost compensates by making its own atmosphere using a turbo. 9R just is naturally aspirated, so it has to use what mother nature gives it. Like all fuel injected vehicles, it does adjust A/F ratio for altitude.

 

[Ultrasauras]

I meant Joey should make a clutch kit for a 9r to

 

[newfrank]

What I read last year was up to 10k feet.
I looked around Polaris again and found the video.
Puts 10% more power than the Natural at Sea level, then maintains that horsepower to 10k feet.

https://www.polaris.com/en-ca/snowmobiles/innovation/snowmobile-engines/850-patriot-boost-engine/

Over a few years, I made a clutch kit for the 850 boost and tested with guys 200~260 pounds.
Im making a new setting sheet, following the way Polaris makes their clutching sheets. With that power info, now i figured out clutch weight for a guy at 330# pounds.

I always liked your clutch kits on my skidoo sleds! Would be pretty cool to have one in my boost. Gonna follow this one!

 

[Dynamo^Joe]

how about a 9 r kit?

Sorry for late reply. Yes, have a 9R kit. its the same as the turbo, but lighter weight package.

 

[Dynamo^Joe]

no. The boost compensates by making its own atmosphere using a turbo. 9R just is naturally aspirated, so it has to use what mother nature gives it. Like all fuel injected vehicles, it does adjust A/F ratio for altitude.

Ya for the 9R i have a setting sheet to set the grams for a 2000ft range to play in and be in the +/- 150 rpms.

 

[JH@CM]

@Dynamo^Joe is a class act and makes great stuff. I had two of his kits on doos. Glad to see him with offerings on the poo side!