SuzukiSavage.com - New Air Filter(sock) surface area solution

Jim_R

Ex Member

New Air Filter(sock) surface area solution
10/13/05 at 19:51:33

I got this kewl 60mm air filter/sock from ebay.

It was a real tight fit but it sure works alot better than my other pod/car tuner filter. I believe its because of what Greg650 said. The air has short distance to travel and its a straighter shot. I noticed a big difference and it was the best 14.99 i spent (with shippin) off ebay.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=45790312...
ebay ad

http://www.geocities.com/jimruggiero/newfilter.jpg

here is a pic on my bike.

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Savage_Rob Serious Thumper Alliance Member Offline Mechanically Inclined Amateur Posts: 6972 Texas (Dallas area) Gender:	Pod Style Air Filter Reply #1 - 10/14/05 at 06:01:09 Yeah, they sell those for $9 (before S/H) at Cycle-Re-Cycle. I'm not sure the largest they have will fit though. It's a 54mm and I think the carb needs a 57mm or 58mm to fit properly. This site has some pretty decent prices on several things... like springer seats.
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Savage_Greg Serious Thumper Alliance Member Offline Don't go around your ass to reach your elbow... Posts: 7844 SW Washington State Gender:	Re: New Air Filter(sock) Reply #2 - 10/14/05 at 09:08:04 Looks like a good fit, and it appears to be shorter than my K&N, too.
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Savage_Rob Serious Thumper Alliance Member Offline Mechanically Inclined Amateur Posts: 6972 Texas (Dallas area) Gender:	Re: New Air Filter(sock) Reply #3 - 10/14/05 at 12:52:54 Speaking of the length of the K&N filter, I found this interesting idea on changing that.
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Savage_Greg

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Re: New Air Filter(sock)
Reply #4 - 10/14/05 at 13:14:45

Savage_Rob wrote on 12/31/69 at 16:00:10:

Speaking of the length of the K&N filter, I found this interesting idea on changing that.

And that is the correct filter for the Savage too. I had also thought about fitting a tubing fitting in the chrome end of the filter for the crankcase breather hose....but I changed my mind in favor of using a separate filter.

As for shortening it...is it a good idea? When you cut it, the diameter will be bigger than the original end in the chrome cap. Therefore you have to squeeze the pleats in the filter together to refit them in the cap. Right? And if you do that, will it make the filter material denser and restrict airflow more than it was?

Just a thought....

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Curz YaBB Newbies 2005 No Login Offline Posts: 34 Waterloo, Ontario, Canada Gender:	Re: New Air Filter(sock) Reply #5 - 10/14/05 at 14:19:23 You've already reduced its flow by cutting away surface area, whats a little more by compacting? ???
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Savage_Rob Serious Thumper Alliance Member Offline Mechanically Inclined Amateur Posts: 6972 Texas (Dallas area) Gender:	Re: New Air Filter(sock) Reply #6 - 10/14/05 at 14:27:33 I've kinda wondered about that anyway. It seems like the pod has a lot less surface area than the drop-in K&N I have now. The only caveat there is the bottleneck at the snorkel under the seat. That's really my primary restriction now and the shortened K&N pod may still be more than that _ I don't know.
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SavageDude

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Re: New Air Filter(sock)
Reply #7 - 10/14/05 at 19:40:38

Savage_Rob wrote on 12/31/69 at 16:00:10:

I've kinda wondered about that anyway. It seems like the pod has a lot less surface area than the drop-in K&N I have now. The only caveat there is the bottleneck at the snorkel under the seat. That's really my primary restriction now and the shortened K&N pod may still be more than that _ I don't know.

Is there any ill effect on the engine if the side plastic cover for the air filter is removed completely. I still have have stock filter and stock muffler with 1/2 white spacer along with 155 main jet?
I felt that the engine accelerates much better than with that plastic cover on the air filter housing.
Inputs please ??? ???

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2005 S40, debadged, Tkat FB, saddle bags, sissy bar, HD Sporter muff, Fly screen, white spacer mod, 150 main jet.....and sssslowly upgrading

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Jim_R

Ex Member

Re: New Air Filter(sock)
Reply #8 - 10/15/05 at 01:05:01

I have heard it runs alot better with it cracked at the very least. The only ill effect I could see is that if more air is rushing thru ur filter might get dirtier quicker.
With a 155 main jet I think that you might want to get a k&n replacement filter at the very least. But that is only my opinion.

I went with a sock because its faster and I like the look.
I miss my side covers a tad but it was worth it to me.

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Savage_Greg

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Re: New Air Filter(sock)
Reply #9 - 10/15/05 at 07:55:32

Can I ask a dumb question? It may be that I've been without my airbox for a while, but I gotta ask anyway....

If you open the door on the airbox where you access the filter, how does that allow air to go through the filter anyway? Doesn't opening the door allow air to bypass the filter? Isn't that defeating the purpose of the filter?

It seems to me, that if you want more flow, it would simpler to just remove #10.

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Jim_R Ex Member	Re: New Air Filter(sock) Reply #10 - 10/15/05 at 08:01:06 Although I havent cracked the filter box, i guess when the bike is moving, the air is channeled into the box since the crack is facing the direction in which the air is flowing. I honestly havent tried it and loves the pod idea but the sock I think is the best option I have tried yet.
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Savage_Greg

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Re: New Air Filter(sock)
Reply #11 - 10/15/05 at 08:01:53

Jim_R wrote on 12/31/69 at 16:00:10:

I have heard it runs alot better with it cracked at the very least. The only ill effect I could see is that if more air is rushing thru ur filter might get dirtier quicker.
With a 155 main jet I think that you might want to get a k&n replacement filter at the very least. But that is only my opinion.

I went with a sock because its faster and I like the look.
I miss my side covers a tad but it was worth it to me.

Anyone considered the fact that a K&N filter is reusable/cleanable? If you try to clean a stock filter it comes apart....at least mine did.

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slavy Serious Thumper Offline smart cars for stupid people Posts: 710 Phoenix, Arizona Gender:	Re: New Air Filter(sock) Reply #12 - 10/15/05 at 08:20:16 Removing the #10 is "step 1". If You want more air , in addition to step 1 You can drill as many holes in the air filter door , as You wish. Step 3 is to remove the door completely. There should be no air leak around the filter. For added security put waterproof grease around the filter.
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Savage_Greg

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Re: New Air Filter(sock)
Reply #13 - 10/15/05 at 08:45:04

Savage_Rob wrote on 12/31/69 at 16:00:10:

I've kinda wondered about that anyway. It seems like the pod has a lot less surface area than the drop-in K&N I have now. The only caveat there is the bottleneck at the snorkel under the seat. That's really my primary restriction now and the shortened K&N pod may still be more than that _ I don't know.

Geez this is gonna take a minute.....this discussion is all about surface area, and I'm pretty certain that my pod filter has more than a stock filter.

First, let me insert this link for my K&N filter. This gives all the relative dimensions, too.
RC-1250

It states that my pod filter has a top diameter of 2", a base diameter of 3.5" and a length of 4"....

I think that it might be time for a little math, but unfortunately, I'm a little rusty. It involves some area calculations, and I can't remember exactly how to figure the surface area of a cone....a little research would help, but I'm also a little lazy....

Anyway, if someone has the time, could they take their old stock filter and roll it into a tube and tell us the diameter of that tube?

Or simply multiply the length and width and give us the surface area of the filter element alone (don't count the edges)?

I'm betting that the K&N pod has more surface area than a flat stock filter....

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Savage_Greg

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Re: New Air Filter(sock)
Reply #14 - 10/15/05 at 08:49:06

slavy wrote on 12/31/69 at 16:00:10:

Removing the #10 is "step 1". If You want more air , in addition to step 1 You can drill as many holes in the air filter door , as You wish. Step 3 is to remove the door completely.
There should be no air leak around the filter. For added security put waterproof grease around the filter.

I'm gonna photograph my airbox today for the Marketplace section and I'll look at the door again.

Are you saying that with the door open, the carb side of the filter is still sealed? The diagram at the top kinda shows the door to be needed for that....

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