Modern day horsepower - Page 4 - HCS Snowmobile Forums

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Old 05-08-2019, 07:57 PM   #31 (permalink)
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https://m.youtube.com/watch?v=glxlaI19w5M

It seemed fitting to put this video here. Even though it was mostly wheel hop that broke this truck, the video shows the power upgrades available when an engine has forced breathing, (turbo or SC) vs a naturally aspirated engine of twice the displacement.
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Old 05-09-2019, 05:44 AM   #32 (permalink)
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Originally Posted by northstarrick View Post
it is actually very simple. and only added about ten pounds of weight. and this sled clutch set-up had about 10,000 test miles without one hiccup. but i would suspect cost is what's holing it back.
I'm thinking , to make a cost effective setup, one way would be to keep todays components , ie weights/springs/helix, and just use electronics to modify/tweak the shift curve as desired.

Also, this way, if the fancy shit breaks , there's still old school tech in the clutches to get you home
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Old 05-15-2019, 03:43 PM   #33 (permalink)
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Originally Posted by MR WEEZ View Post
Huda thunk it that this electronic doo-hicky is giving me more horsepower with a couple touches of a keyboard. I miss the old days installing pipes, reeds and jetting etc. trying to find that little edge over my buddies.
Get a Polaris problem solved they make the most hp an are easy to mod my buddys 800 blows the 850s doors off .

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Old 05-15-2019, 07:15 PM   #34 (permalink)
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Originally Posted by Tommcat View Post
no worries.
i've heard that yammie is trying closed loop for 2020, but only on the NA 1049 motor, which is pretty much the last place that needed it.
I always thought that closed loop was not desirable for a boosted application. I know when you go bigger power on a WRX many convert to speed density. Something with the MAF and boost and having to reroute the BOV back after the MAF or you get run problems.
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Old 05-15-2019, 08:14 PM   #35 (permalink)
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I always thought that closed loop was not desirable for a boosted application. I know when you go bigger power on a WRX many convert to speed density. Something with the MAF and boost and having to reroute the BOV back after the MAF or you get run problems.
Speed density is still closed loop, at least on any modern system.

And the reason those particular wrx guys remove the MAF is likely because they insist on using an atmosphere dump BOV because it sounds cool, but can't get it to work.

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Old 05-16-2019, 08:18 PM   #36 (permalink)
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Originally Posted by Fast DoO View Post
Get a Polaris problem solved they make the most hp an are easy to mod my buddys 800 blows the 850s doors off .

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What problem does he have that owning any Polaris would solve?
Making too much power? Going too fast? Easiest to make more power? Engine stays together too long?

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