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General Category >> Rubber Side Down! >> Air Filter Brainstorming
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Message started by Iceman4193 on 07/26/15 at 14:55:48

Title: Air Filter Brainstorming
Post by Iceman4193 on 07/26/15 at 14:55:48

So I was wondering some input on air filters.
There are dozens of options and lots of different opinions so scouring the forum for a bit I found some things that seem like most people agree on (Cone filter directly on carb causes issues for most for example).
I am trying to figure out what filter and intake setup I want to do so if one of you had a general consensus on some things to keep in mind as far as pro's and cons of different set ups that would be great.

I am considering changing for my new setup I will be doing with a 97mm Wiseco, 36mm VM Mikuni, S3 Cam, 1.5" Header so sufficient airflow is gonna be important. Also the custom ascetic is nice.

So far the options I am considering are:
1 - Keep it stock
2 - Cone Filter either straight back like this
http://i8.photobucket.com/albums/a16/Iceman4193/DSC02411_zpsfllw6loh.jpg
(from 88Pagan)
3 - Cone filter that feeds into airbox
4 - 90 degree bend to the right or left and throw on a Halrey Style filter

Some questions I was wondering:
1 - Bigger filter = better airflow?
2 - Is area between the filter and the carb better than straight mounted?
3 - Is a static air area between the filter and outside air a good idea?

Any info is appreciated 8-)

Title: Re: Air Filter Brainstorming
Post by Serowbot on 07/26/15 at 16:23:14

Yes, yes, and yes...

Title: Re: Air Filter Brainstorming
Post by Neilap on 07/26/15 at 16:44:24

The hose between a filter and and is pretty important. Everything iv messed with loses a considerable amount of power by doing this. I want to say it messes with the venturi effect and fuel atomization into the air. If i am using the right terms lol.

Title: Re: Air Filter Brainstorming
Post by LANCER on 07/27/15 at 13:17:40

A 90 degree turn from filter to carb will not mess with the venturi effect to any appreciable degree as long as the inside is smooth.

Going from carb to stock filter unit would require some work since the VM36 carb is larger than the stock carb. If you wanted to do this then the stock filter would probably be ok for air supply.
For convenience most just go with a K&N or similar filter.

Title: Re: Air Filter Brainstorming
Post by Iceman4193 on 07/28/15 at 15:23:17

Would my theory of using a 90 degree pipe and a harley type circular filter with a cover for water be sound or would that cause an issue somewhere?

Title: Re: Air Filter Brainstorming
Post by JutMan on 07/28/15 at 19:47:10

That space looks really open in the picture. If you want maxing air flow, maybe put a T where the filter is now and have a cone filter on each end. You would enough air for sure and from each side you would see the top of the cone filter.