Interesting air filter tests

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I like the purolator. I saw a dyno test with an old k + n down 90 horse, the cotton fibers get matted down. Another dyno test the best was Green filter
 
toolmanmike said:
Wow, My head is scrambling.That guy packs a lot of info into a short video. Good information though. Thanks for the link
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Thats how youtube videos of comparison testing should be done. No bs blathering about irrelevant nonsense as if the narrater is some legend in their own mind youtube wanna be star. Get to the info with good fast paced editing. Viewer gets in and gets out with the knowledge! Very refreshing after having to suffer way to many of the aforementioned videos:thumbsup:
 
You can’t test any air flow not using a standard test pressure. His Mickey Mouse test rig can’t flow enough air to even give repeatable test results, let alone move enough air.


If he used an actual flow bench for the testing and picked a test pressure of at a minimum of 10 inches the results would be different. Then he could have tested at higher test pressures and recorded the results.

Poor testing capabilities gives inaccurate results. You can bet the engineers who design and test these filters move way more air through them at much higher test pressures than he did.
 
yellow rose said:
You can’t test any air flow not using a standard test pressure. His Mickey Mouse test rig can’t flow enough air to even give repeatable test results, let alone move enough air.


If he used an actual flow bench for the testing and picked a test pressure of at a minimum of 10 inches the results would be different. Then he could have tested at higher test pressures and recorded the results.

Poor testing capabilities gives inaccurate results. You can bet the engineers who design and test these filters move way more air through them at much higher test pressures than he did.
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Higher test pressures would only make all of them leak more air----------------
 
yellow rose said:
You can’t test any air flow not using a standard test pressure. His Mickey Mouse test rig can’t flow enough air to even give repeatable test results, let alone move enough air.


If he used an actual flow bench for the testing and picked a test pressure of at a minimum of 10 inches the results would be different. Then he could have tested at higher test pressures and recorded the results.

Poor testing capabilities gives inaccurate results. You can bet the engineers who design and test these filters move way more air through them at much higher test pressures than he did.
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Do I dare disagree with the great yellow rose?? Na I will wait for @j par to do it! Haha I think that setup is acceptable for a demonstration like that. I may be wrong but not usally! :lol:
 
dartfreak75 said:
Do I dare disagree with the great yellow rose?? Na I will wait for @j par to do it! Haha I think that setup is acceptable for a demonstration like that. I may be wrong but not usally! :lol:
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Wtf you disagreeing with me for? You are supposed to disagree with him! Haha
 
famous bob said:
Higher test pressures would only make all of them leak more air----------------
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So doing a test with a system that can’t even come close to moving air like an engine (even a flow bench can’t duplicate that but his little vacuum or whatever is ridiculous) and isn’t even close to what the filter sees when running.

The interesting thing about changing test pressures and using as much depression as you can (or...reducing the depression when sorting out flow issues) is air doesn’t behave the way one would think it does most of the time. It behaves like a liquid, except it’s compressible!

So yeah, no air volume and very low depression means his test is meaningless for the most part.
 
Well, You can have Your cake & eat it too, if You're willing to make room for it. It's called increasing the size of the filter, & it's the only way to maximize protection & flow together,....period.
 
increasing and varying the size of the filter and material and height of can and etc. is very cool for horsepower. search some dyno tests for interesting info. an air filter and can increase power +10 over
 
yellow rose said:
So doing a test with a system that can’t even come close to moving air like an engine (even a flow bench can’t duplicate that but his little vacuum or whatever is ridiculous) and isn’t even close to what the filter sees when running.

The interesting thing about changing test pressures and using as much depression as you can (or...reducing the depression when sorting out flow issues) is air doesn’t behave the way one would think it does most of the time. It behaves like a liquid, except it’s compressible!

So yeah, no air volume and very low depression means his test is meaningless for the most part.
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HECK , i AINT EVEN RUNNING ONE .
 
It's like most of us have known all along. K&N sucks dead rotten monkey balls for filtering.
 
I have a k & n of a 454 chevy pickup from pick a part on my dakota
butn with a green foam wraper
 
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Mopar Tim said:
I do not care. I still will use K and N, I mean how clean does the air going in an engine really have to be? IMO this test is not real life testing....
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Drive around town with your windows down all day and see how much dust is on your dash. That is lapping compound eating your piston rings and bearings. Yeah I used to think that way when I was young and ignorant.
 
So, a little late to the discussion, but here is another test done be Engine Masters on air filters and affects on horsepower.

 
famous bob said:
Interesting; I rode a 500 quadzilla and 250 quadracers out in the desert for 4 yrs., running K-N air filters, no foam over them, the secret to them is ''almost dripping'' w/ oil/trans fluid .' Never found sand in the intake or engine , the highly modifyed air box always had sand in them ---------
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Does keeping them almost dripping restrict the air flow ?
 
Excellent @DrEamer , i was gonna mention that test, but you posted it! It does an great job of testing the air cleaner housing as well as the element.
For reference, i bought a K&N for my runner years ago. The throwaway fram was $35, the lifetime K&N was $50. No brainer! (A 14x3 round fram was about five bucks at the time.) I have had no complaints with the K&N, but i use up my stock of paper filters on everything else.
The correct "throwaway fram" repop is now $125.
Edit: that air filter test was one of my two favorite engine masters episodes!
 
On the dyno for the last 2 pulls. We put my 14x3 drop base with K&N filter on. We lost 10 lb feet of torque at 2900. Leaned it out 2 sizes, and gained 12 back on the next pull.
 
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