Very interesting study! Should I keep my KN air filter in my engine? 
)
http://www.pceo.com/StudyinSandArticle.pdf
Enjoy..
)http://www.pceo.com/StudyinSandArticle.pdf
Enjoy..
Last edited:
The damage done by dust
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I run an oiled gauze air filter on my Harley with good results.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
Originally Posted By: Roadkingnc
I run an oiled gauze air filter on my Harley with good results.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
What does "good results" mean? You have run a UOA and found low silicon?
I would dump the K&N air filter.
Even OPE that uses oiled prefilter, normally has a media filter as the main filter.
I run an oiled gauze air filter on my Harley with good results.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
What does "good results" mean? You have run a UOA and found low silicon?
I would dump the K&N air filter.
Even OPE that uses oiled prefilter, normally has a media filter as the main filter.
Originally Posted By: Roadkingnc
I run an oiled gauze air filter on my Harley with good results.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
cummins for example/ easy way to test when engine is disassembled is the dust and debris would sharpen the rings and you could cut paper with them.
I run an oiled gauze air filter on my Harley with good results.
But I have also seen diesel engines damaged and the warranty voided by the manufacturer due to dusting of the turbo and cylinder walls. The cylinder walls were highly polished, almost chrome like. The turbochargers had damaged impeller fins caused by the impact of the dust at highrpm.
cummins for example/ easy way to test when engine is disassembled is the dust and debris would sharpen the rings and you could cut paper with them.
To me.
Hi-performance or drag car = K&N type oiled gauze filter.
Every day cars/trucks = OEM or OEM replacement filter, i.e., Wix, Fram, Purolator etc.
Hi-performance or drag car = K&N type oiled gauze filter.
Every day cars/trucks = OEM or OEM replacement filter, i.e., Wix, Fram, Purolator etc.
I ran a K&N on a turbo saab and the silicon in a UOA was way high. I'll never buy a car if I see one. Might as well just run without an air filter if it's not religiously maintained.
I've seen dusted diesel equipment. It's sad to see an engine fail due to negligence.
I've seen dusted diesel equipment. It's sad to see an engine fail due to negligence.
Originally Posted By: mclasser
I never understood why people get these filters. They seem to be more problematic than good. Putting it in a 94 Civic suddenly isn't going to make you Speed Racer.
Well not unless the whole car is pasted with stickers of brands that the car isn't actually fitted with,I think they improve the aerodynamics.
I never understood why people get these filters. They seem to be more problematic than good. Putting it in a 94 Civic suddenly isn't going to make you Speed Racer.
Well not unless the whole car is pasted with stickers of brands that the car isn't actually fitted with,I think they improve the aerodynamics.
Quote:
The study was carried out in the United Arab Emirates, a country known for its arid environment and difficult operating conditions. Road- side samples were taken to determine what sand and dust particles were present in the ambient environment.
I'll keep that in mind the next time I go driving my car in the United Arab Emirates.
The study was carried out in the United Arab Emirates, a country known for its arid environment and difficult operating conditions. Road- side samples were taken to determine what sand and dust particles were present in the ambient environment.
I'll keep that in mind the next time I go driving my car in the United Arab Emirates.
I guess the entire community of modified performance car owners are subject to engine failure?
Originally Posted By: hardcore302
I guess the entire community of modified performance car owners are subject to engine failure?
That's true, regardless of air filters!
I guess the entire community of modified performance car owners are subject to engine failure?
That's true, regardless of air filters!
Originally Posted By: oldhp
To me.
Hi-performance or drag car = K&N type oiled gauze filter.
Every day cars/trucks = OEM or OEM replacement filter, i.e., Wix, Fram, Purolator etc.
+1
I've run K&N on a car I sold to a friend at 152K, he sold it at 177K - the engine did not grenade. On a motorcycle I've run one for over 15 years - the engine did not grenade. I have zero doubt that a K&N causes increased wear vs. a better filtering air filter. The trade-off is simple: the potential for quicker RPM spin-up/increased HP in some cases in exchange for reduced fine particle filtering. If the stock set-up provides a restriction to air flow the K&N will generally help ET but if the stock set-up does not provide an air flow restriction the K&N generally won't do anything but pass more dirt into the engine. Currently I don't consider either of my passenger cars to be high performance or to have restrictive air cleaner/filter assemblies so I don't run a K&N in either but I still run a K&N in two of my three bikes strictly for the slight performance advantage and knowing full well that they don't filter as well as a "normal" filter. Decide which is more important: potential flow or filtering ability and buy accordingly.
To me.
Hi-performance or drag car = K&N type oiled gauze filter.
Every day cars/trucks = OEM or OEM replacement filter, i.e., Wix, Fram, Purolator etc.
+1
I've run K&N on a car I sold to a friend at 152K, he sold it at 177K - the engine did not grenade. On a motorcycle I've run one for over 15 years - the engine did not grenade. I have zero doubt that a K&N causes increased wear vs. a better filtering air filter. The trade-off is simple: the potential for quicker RPM spin-up/increased HP in some cases in exchange for reduced fine particle filtering. If the stock set-up provides a restriction to air flow the K&N will generally help ET but if the stock set-up does not provide an air flow restriction the K&N generally won't do anything but pass more dirt into the engine. Currently I don't consider either of my passenger cars to be high performance or to have restrictive air cleaner/filter assemblies so I don't run a K&N in either but I still run a K&N in two of my three bikes strictly for the slight performance advantage and knowing full well that they don't filter as well as a "normal" filter. Decide which is more important: potential flow or filtering ability and buy accordingly.
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