I am running the Flip-Tie Mod, so im running the basic flat K&N filter, because the filter outside exposed to the elements.
Since the K&N doesnt filter as well as the paper filter, is there something I can put in front of the K&N to act as a prefilter to improve its dirt catching ability?
scotchbright?
Flat Foam ??

any idea's ? or research done?
thanks

 

With all due respect, I disagree with your statement that K&N doesn't filter as well. And if it gets dirty, the advantage is the ability to clean it repeatedly. You can clean it every weekend if you want. Every popular after market air intake assembly uses a oil/cotton gauze filter (VARARAM, HALLTECH "Venom", CALLAWAY "Honker", SLP "Blackwing", AIRAID, VORTEX "Rammer" to name a few). They're usually manufactured by K&N or S&B.

But, if that's your feeling why not just use an oem paper filter? When it gets dirty, replace it...every weekend if you want. Of coarse, it probably won't flow as well as an oil/cotton gauze filter.

If you put a "pre-filter" in front of the K&N, it'll defeat the free flowing ability of the K&N. So, what's the benefit then, anyway?

 

[QUOTE=hotwheels57;1572884788]I disagree with your statement that K&N doesn't filter as well. If it gets dirty, the advantage is the ability to clean it repeatedly. You can clean it every weekend if you want. But, if that's your feeling why not just use an oem paper filter.


Proven fact;
the paper filter filters much better than the K&N (search Bobistheoilguy , air filter tests) and the flowing differences are very minimal , almost none.

As I originally stated the only reason im running the K&N in the first place is because I am running the Flip Tie mod (for cold air intake), and the filter element may be exposed to damp air when it rains etc...

 

So, the K&N is good for filtering "damp air when it rains", but not cool dry air.

OK...

 

You might want to read this article:

http://www.bobistheoilguy.com/airfilter/airtest1.htm

.....in the article....
Certainly, there are many sides to this story. Let the arguments commence!

 

The safest way to go, then, would be to mimic a Z06's screened front end and larger-opening air box with a good paper filter. In the absence of that setup, an oil analysis here and there would verify whether excessive particulates are getting past the filter.

 

The Air Filtration and Flow Test was performed on a "1992 Mazda Miata with a bone stock engine"...

From the Air Filtration test " There are no definitive independent tests. Automotive enthusiasts have to rely on the claims of filter makers, which I feel are misleading."...misleading? Maybe self serving, but then what manufacturer is going to say their product is a poor performer.

From the Air Filtration Test Disclaimer "This is not a laboratory test, but a real world test."

 

so ditch the flip tie mod, (replace or repair radiator shroud)
flip it over and go to the zip tie, paper filter , and go to screens

If I do that, I may go to a blackwing.
any comparison tests done to the Blackwing vs. Zip tie Mod (paper filter)

thanks guys, I really appreciate your time

 

doesnt matter what it was tested on , filtration is filtration.

You being in the Desert have allot more to worry about than most of us.
Im sure there's allot more dust/dirt floating around out there.
You may want to consider switching back to a paper element if you plan on keeping the car, and wish to keep its oil clean and wear down to a minimum.

 

I'll stick to regular oil change analysis to determine engine wear...

 

Well, I installed a Halltech Stinger (Remay) filter and airbridge/smooth TB coupler, cut the area out underneath the filter, installed fine stanless steel mesh screen, and a polycarbonate (Staples wall pocket) air scoop. I do have to clean the filter every 6 months, but my throttle body seems to stay very clean.

The Z06-style opened-up fog light panel scheme would work well but I wanted to keep the front end untouched.

The Blackwing will raise RWHP by about 10 but without cold air ingress, that extra HP will wither away as underhood temps increase due to slow or stop&go driving.

Here's my procedure for the scoop CAI mod:

http://www.conceptualpolymer.com/Rad...op%20inst..pdf

 

Dave 68,

Your post about the radiator air scoop is very interesting and very professional.

I question one part of your modifications, that is cutting a part of the driver's side hood gasket. The base of the windshield is such a location that air might be drawn into the hood (note that is where the intake for the interior HVAC is located). Note that ZO6's have a complete hood gasket. I would leave it intact.

 

Thanks, Oldvetter,

This part of the mod was suggested by a guy who used to work for GM (not Evil Twin). He stated that a high pressure area will build up in that area if additional air is allowed to be pushed in (additional openings) as vehicle speed increases. While I have not tested this notion, I thought I'd give it a try. My engine bay does stay very cool, even on hot days - that I have established using a temperature data logger.

Dave

 

[QUOTE=grego37;1572884866]Are you for real? FIRST: Our local GM dealership has a K&N vs. paper air fiter test station in the parts area. You can switch the air flow to each filter and see how far the ball floats (showing air flow). You can clearly see the paper filter is by far the loser. SECOND: If the paper filter was a better option, why are the aftermarket companies not including a paper filter with their product? THIRD: On the Powerblock TV show, there was an episode that involved intake testing at Edlebrock. On the flow bench they tested your paper filter vs. K&N style filters (even dirty). The paper filter lost. When Edlebrock performs flow tests, a K&N style filter is used. I would really like to think that a multi-million dollar company that has been around for as long as they have, know what they are doing. Fourth: If you are that worried about air filter, maybe you should leave your car in the garage!

 

[QUOTE=c5blkvetteguy;1572891266]powerblock / the infomercial ?

paper filters better
gauze flows more and is re-usable

 

you couldnt have said it better

 

paper filters better
gauze flows more and is re-usable[/QUOTE]

you couldnt have said it better

 

[QUOTE=SJPD;1572891613]
That's it in a nutshell - what's your comfort level........

 

Very amusing thread........

 

Grego37 is right, K&N filters are crap.

Here is a link to an SAEJ726 test that compared K&N with standard paper element filters.

http://www.nicoclub.com/articles.php?id=180100

This is a real test, and not somebodys estimate with filter paper. Bottom line is that the difference in pressure loss is minimal, and even when clean the K&N passes a lot more crap into your engine. When they get diry they have more pressure loss and pass even more crap into your engine.

The pressure loss of a paper filter is on the order of 6 inches of water (.0.216 psi) or about 1.5% of power is lost in a paper filter. A K&N has a pressure loss of about 4 inches of water, about 0.144 psi, or about 1% of pressure loss. The difference is about 1/2 of one percent, or about 2 horsepower in a 400 hp engine.

Ask youself, is it really worth 2 horsepower to shorten the life of my engine?

Forget the "***** in the air test". That is simply a parlor trick. The ***** are the right weight to "float" with the air passing the K&N filter. They are using a small fan and the little bit more loss from the paper filter exaggerates the effect. It is a great tool for selling fiters. It means nothing relative to the sucking power of a V8. The other thing is that people say they "feel the difference". Well maybe the "hear" the difference and think they are making more power since most of these filter installations have more induction noise, but nobody is going to be able to feel a 2 hp difference. I guess that if you want to make a pass on the strip, you could use a K&N and gain a half a tenth of a second, but for that matter just take out your paper filter and make the pass and you will see twice again the advantage that the K&N gave you.

This subject comes up from time to time and the result is always the same. Lots of K&N proponents simply don't know the facts or haven't seen test results that show how bad these filters are.