C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Air Filter Mod. Question

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Old Jun 7, 2007 | 10:34 AM
  #21  
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I don't think I understand those. By cowl air filter do you mean the screen that goes across the vents in front of the windshield? Mine hasn't been getting leaves, etc, in there so I haven't used it. For the K&N it should have a rubber surround like a stock paper filter, this rubber edge is very durable it won't just break off. Is that the part you mean?
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Old Jun 7, 2007 | 10:55 AM
  #22  
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I coat my K&N with Slick 50 (w/ teflon) for the best performance. But sometimes it fouls up the blades on my turbonator.

Any suggestions?


Originally Posted by ModifiedLT1
Yeah I guess if you guys have a hard time spending $20 a year to put a good air filter in your car, maybe you cant aford a Corvette and should move to something cheaper.
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Old Jun 7, 2007 | 11:07 AM
  #23  
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
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Originally Posted by Fuzzy Dice
you buy a K & N for longevity and WILL save money in the long run...if you are dumb enough to over oil it you deserve MAS problems...you show me how they are overpriced or junk compared to paper filters over time and I'll buy you your next paper filter...once again a bunch of pure speculation without a shred of evidence other than over oiling causes MAS problems...well..DUH!!!
How do you quantify the extra amount of dirt entering the engine? And the cylinder wall wear (through the intake) and contamination of the oil and bearing wear (through the pcv vent)? Also the polyurethane surrounds don't seal to the filter housing for sh** compared to the paper filters.

Are we supposed to pay for and run 10 test engines in a controlled environment to see which is cheaper?

I've seen that they pass more dirt. I've seen that they flow marginally better when dirty and no better when new.

K&N also claims that oil won't affect the MAF. They go onto say the K&N can not deposit oil on a MAF, and that the MAFs are being contaminated by blowby, amongst other things. WTF, didn't they just say oil wasn't an issue? Do they have any claims that aren't bogus?


Sounds like the burden of proof is on the K&N users that are claiming all these benefits, not the other way around.
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Old Jun 7, 2007 | 11:09 AM
  #24  
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
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Originally Posted by Aardwolf
Time, PCV, and EGR, will put more dirt in an engine then a K&N will.


Tell me again where 100% of that dirt enters the engine in the first place? (Hint: There is only one opening.)
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Old Jun 7, 2007 | 12:35 PM
  #25  
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Yes, the cowl air filter goes over the screen that goes across the vents in front of the windshield. I see them used by people at car shows to filter the air and was wondering if this is any good. My gasket
for my K & N is like a foam tape. This is why I was wondering from the heat would the gasket break apart and get in the Engine?
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Old Jun 7, 2007 | 12:53 PM
  #26  
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Originally Posted by MY93TOY
Yes, the cowl air filter goes over the screen that goes across the vents in front of the windshield. I see them used by people at car shows to filter the air and was wondering if this is any good. My gasket
for my K & N is like a foam tape. This is why I was wondering from the heat would the gasket break apart and get in the Engine?
The air filter is pretty far away from engine heat, don't worry about it. The cowl filter that I think you are speaking of is to keep debris out not filter the air. It has nothing to do with air going into the engine. Quite awhile ago I lived at a place with no garage and there was always leaves in there.
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Old Jun 7, 2007 | 01:35 PM
  #27  
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This is how Ecklers has it listed

Corvette Cowl Air Vent Filter, 1984-1996

Filters Out Pollutants
Every Corvette should have one! It keeps pollutants out of the cockpit and prevents foreign debris from fouling heating or cooling components. This pre-cut foam filter installs in seconds and can be cleaned whenever necessary.
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Old Jun 7, 2007 | 01:52 PM
  #28  
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I see, not the debris screen that goes under the windshield then, try it if you like. It seems the new cars all have removeable filters for the cabin, I see them in the glovebox.
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Old Jun 7, 2007 | 02:10 PM
  #29  
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
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Originally Posted by MY93TOY
Every Corvette should have one! It keeps pollutants out of the cockpit...
Does it come with a miniature catalytic converter?
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Old Jun 7, 2007 | 02:28 PM
  #30  
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Why yes, Central Coaster. I have a suggestion. Buy an electric supercharger. Hell, buy 8 of them. That should take care of your problems!!!!! Maybe I'll try coating my standard paper air filter with slick 50 and see how it works.
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Old Jun 7, 2007 | 02:55 PM
  #31  
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I tried a K&N several years back. To me the only difference was the increase in intake noise. Went back to the stock Delco filter, it appears the better built of all the paper filters I've seen. Cost is not an issue for me as I don't drive the car much, 40,000 miles in 11 years, so I change air filters around 2 years or when the mood stirkes.
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