air filter upgrade

GoldenMotor.com

Greg58

Well-Known Member
May 1, 2011
5,353
2,575
113
65
Newnan,Georgia
Now that I have my cns-2 carb. figured out I want to improve the air flow, can someone tell the mounting screw spacing on the washable type like are sold by sick bike parts? The screw spacing on the cns-2 is 1-5/8", I will make a base plate just need the info. Thanks
 

DaveC

Member
Jul 14, 2010
969
1
18
Boise, ID
I'm getting rid of the K&N style filter. These are so badly made that all the filtration takes place at the bottom of the fold, the rest of the surface blocks itself because it's of the way it's folded. They start with a nice "W" shape and when it's curved for a filter it's more like this, "\ll/". They have discovered they need a shallow wide spacing of the mesh for proper airflow. There are some expensive K&N filters that address this but $53+ shipping is a little high :p

Log On

What I'm going to is a foam filter ment for a gokart. My carb is the older CNS v.1 and I can use a screw clamp to hold the filter on. American Power Sports has adapters for bolt-on type filters and they could be easily modified to work on a v.2.

http://host0114.csmhosting.com/images/G1269.jpg
http://host0114.csmhosting.com/images/AP2236.jpg

APS also has real nice fairly inexpensive K&N type filters that are 3" x 4" or 3" x 3".

Wow, I'm sorry, it won't link up right :p

http://host0114.csmhosting.com/images/AP1641.jpg

I got that copied anyway. That's an example of the lower prices mesh filters. If you have room the bigger the better. That way you have way more accessible filtration. and not bad for way under $15 :)
 
Last edited:

Greg58

Well-Known Member
May 1, 2011
5,353
2,575
113
65
Newnan,Georgia
Thanks DaveC, for now I drilled 1/8" holes in the red cover. Turns out that the engine needs a-lot more air than the stock filter can supply, darn epa stuff!