858 Needs More Air!!

[Chewy22]

Since we are on that topic. After some time on my sled, I think the upper hood vents are the most critical. I have the other two sets installed still waiting for the hood kit. There is a ton of heat that wants to escape the top of the hood. In my opinion the goggle box gets too hot. Every time we stopped for a break, I would open the lid and it was crazy the heat that would come out. Those upper hood vents will release a ton of heat. After I get the hood vents installed I’m thinking about heat taping the holes in the box. I personally think it gets too hot. Or maybe a vent kit for the lid would work great.

 

[arcticridr]

Yea figured after I posted you were after more intake air not under hood air but those would help with the hot goggle box getting more cool air in the whole under hood area gotta help with clutches etc.

 

[Chewy22]

Was not aware there was intake vents here. Surprised how easily this sled gets choked out in over the hood snow.

 

[Vern]

Interesting, is everyone sure it’s 100% an intake bog? I only have one ride on mine without the best snow so have no actual experience to add, but in a lot of the videos I’ve watched it seems a lot of the bogs are happening with the right side of the sled buried. Could it be an exhaust bog, or are you guys getting the bog with the exhaust side out of the snow as well?

 

[Chewy22]

It was both for me. But if you kept the vents brushed off it would not exhaust bog as bad.

 

[turboless terry]

My 19 was bad in super deep snow. Almost unrideable one day. Wipe intakes and would go for a minute. My 20, in same snow, wouldn't bog at all. You tell me what the difference was.

 

[go-on-two]

After taking a very close look at the air-box (still attached to hood) i have no idea how this sled even breaths. From the intake location on the hood sides, it snakes through some very tight looking plenums and corners to eventually reach the lower air-box half. I sure hope someone comes up with an air-box that flows better then this stock one, its a rediculous design, and no wonder they choke for air when covered in the slightest bit of powder!!

 

[tuneman]

It's what you would call a "labyrinth intake". While not the most elegant design, it actually probably does more good than bad. Labyrinth intakes are to smooth the airflow, make it more laminar. Cat definitely could have done better though.

 

[go-on-two]

Has anyone split the intake in half to examine?? Or maybe somebody has modified it slightly to breath better? Could be it can't be improved as designed, not sure but was hoping peeps out there have tried something with measured success!!
With a bit more air and some clutching this sled could really be a beauty IMHO.

 

[Sage Crusher]

I used to cut the Mouse maze of columns in the Ascender intake track- and seemed to flow better but did increase intake noise, which didn't bother as I knew it was breathing.

 

[Chewy22]

I don’t think you should cut the inside of this one. It is designed to keep water out of the lower intake box. I split mine yesterday and surprised how much water was in it, but no water in the lower intake box. This was after sitting in the garage for a week.