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Summitstef
Member
I was reading on a thread in here that a 800R air box will give you more HP??How?? In doing this , doe it decrease the reliability of you sled?? WIll it work on a '04 800 Rev??
what is the difference between air boxes??
- Thread starter Summitstef
- Start date
The round intake hole that connects the outter and inner boxes together is bigger allowing more air. For some reason you have to jet down. Won't change reliability, good mod for cheap...$90 for both inner and outter boxes..2-3hp do some searching on here and Dootalk been talked about a lot.
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Summitstef
Member
How many jet sizes??
How many jet sizes?? I'm assuming mains.
How many jet sizes?? I'm assuming mains.
The 2004 800HO needs a few things first...like new chrome rings or my Trail Torquer kit..then the R air box will be worthwhile...call for exact details...BJ
LOL - is there dyno sheets to back that up? I would love to see something that supports that claim. More than likely the increase in HP (if there is any) comes from jetting down.
Air box primary function is a flame arrestor in the event of a backfire and is mandatory by law.
Airbox's...if designed properly can do alot more....http://www.snowtechmagazine.com/articles/2000/pipetemp/pipetemp.php
As a matter of FACT I DOO...back/back testing was 2 hp...fueling went a little rich from the icreased air flow (less velocity thru the carb) dropped 1 main and picked up another horese...3 total with near equal fuel numbers...but there I go verifying things....BJ
FYI- DOO made the box for there 150+ hp 800R...one would think it was a little better than the old box...and by josh it was...LOL
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Summitstef
Member
I thought chrome rings is a big no no on a nikasil lined bore?? I bought new OEM updated rings. What is this trail torquer kit you speak of Big John??
Chrome rings on a Crome cylinder = not so good...chrome rings on a NicaSil cylinder = OK
I came up with the TT- kit back in 2004...the 800HO suffered from a POOR tune IMHO...so new chrome rings (replace flaky moly rings), thinner base gasket, thinner reed spacers stiffer rave springs, new jets and new plugs...all togather = a 4-5 hp gain and 4-5 tq...its the perfect MOD for the guy that wants a good running stocker...than you can add the air box...BJ
LOL! no worries BJ, glad to see someone that actually went through the efforts! I appreciate that you actually verified this and that it wasn't just someone's wild claim (which seems to happen on here from time to time
). Good on you for shutting me up.
LOL! no worries BJ, glad to see someone that actually went through the efforts! I appreciate that you actually verified this and that it wasn't just someone's wild claim (which seems to happen on here from time to time
it aint bragging if you can back it up.....BJ
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Rob1334
ACCOUNT CLOSED
Just wondering what the dif. is on these from the years. Like I know for the polaris boxes we pull all the extra plastics out of the box to increase the air flow, is that about the same as these? And I didn't think an air box mod would add power to it in that way, like they said could it just be the jetting leaning the engine out? Sorry for not knowing on this one, was just a poo guy wondering...
Having had both.....the 800R airbox has (and someone correct me if I am wrong) a larger diameter throat where the inner/outer boxes converge....this being the biggest restriction.
On the Polaris (at least the Edge, can't speak about the newer chassis), the intake throat is bigger than the velocity tubes in the airbox, so in some cases removing the "guts" can allow more flow and then you can also enlarge the intake hole on the top for even more. To me it seemed unless you add at least a pipe(s) and porting that the stock airbox works the best. Altitude will also have alot to do with what works and what doesn't.
The small stock airbox from a HP point of view is a power restrictor.....Most folks that run BigBores myself included run K&N's.
Air + Fuel = HP.
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Air + Fuel = HP.
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HPJUNKIE
Active member
K&N's don't belong on the snow, especially when you are sucking in warm underhood air (pre-heated air + fuel = HP Loss !) A "properly designed" airbox/air intake system utilizing cooler air is the way to go! (cooler air + fuel = more power!) A "properly designed" air box will also not have the "drone" typically associated with pod type filters. (allows you to better hear the pipes/silencer of your choice) l.o.l....
I can assure you that a properly vented hood or even a mesh hood or even no hood and the K&N's will not have issues with under the hood engine heat.
The biggest trouble with most airbox's is there restricted size due to the limited space in a very tight engine compartment.
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What exactly is your trail Torquer kit? Your website doesn't say much.
What he said^^^^ Mesh hood and velocity stacks with filters in the cold air stream on my sled runs wayyy better than the stock air box ever did. Search "cold air intakes" on here or PM me for pics of my setup.
You have to know how to tune them in order to get the most out of pods/K&N's. Too many people just throw them on and expect them to work. And they don't work great on all sleds either, some sleds prefer the airbox.
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