Effect on engine run without air cleaner
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Racer
Joined: Sep 2006
Posts: 484
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From: McComb Ms.
i've seen them in www.summitracing.com or www.jegs.com..... search airfilters and you will see them, i have found one to give you an idea of what to look for but this isn't the one you want i don't imagine. look at them all and find the one that fits your needs http://www.jegs.com/webapp/wcs/store...0002_753737_-1
Race Director
Joined: Nov 2002
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From: Taylor Michigan
I run one on most of my cars but I took this one`s off in 1964 and only put it back on one time for the Detroit Autorama. 
I`m not advising to not run one, but I have never had any trouble with out it. 
I dont live in a desert however
.
I`m not advising to not run one, but I have never had any trouble with out it. I dont live in a desert however
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Race Director
Joined: Mar 2006
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From: Florida
See some oil analysis reports for your answers to that one. They consistantly say increased engine wear with no filter.
In fact, I have seen several tests that show K&N filters allow more wear particles into the oil than a factory filter because of the increased air flow capability.
Instructor
Joined: Aug 2004
Posts: 155
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From: SF Bay Area CA
Call me stupid, but could you explain why this type of filter could catch fire upon backfire, whereas other type does not ?
Racer
Joined: Sep 2005
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From: Shoemakersville Pa
The filter element it made of foam which is flamable. I had one of these on a 69 camaro and the carb backfired. Had to remove the carb and clean out all the half burned foam that dropped down in the carb.
Race Director
Joined: May 2005
Posts: 10,674
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From: Millington Illinois
St. Jude Donor '08-'09
Me too, except my burnt foam all got sucked through my engine. One of these came on my 63.
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Race Director
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Race Director
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From: In Dreams There Is Truth Ohio
do you have a cold chamber hood? if yes, use the L-88 filter, seal, flame arestor, and, drop down base. If you don't have the cold air chamber, then use, as many have suggested, the drop down base..I'm not sure if the L-88 has a longer drop than the aftermarket...but you can get an element and top that will fit under your hood. If the carb stud is too long, trim it.
Team Owner
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From: central America
St. Jude Donor '08-'09
Safety Car
Joined: May 2001
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From: Surrey
I've got a shelf at home that is full of pistons from bikes that have been run without air filters ("makes it go faster, dunnit mate"). Take a new piston & a piece of 120 grade wet-or-dry & rub the wet-or-dry up & down the piston all around the skirt (or just use a fine file!). That's what it will look like after it's been run without an air filter. Damage will also be done to the bore & I don't even want to think about where all the metal shavings & grit that caused them went after it got out of the bores.
Race Director
Joined: Feb 2005
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I've got a shelf at home that is full of pistons from bikes that have been run without air filters ("makes it go faster, dunnit mate"). Take a new piston & a piece of 120 grade wet-or-dry & rub the wet-or-dry up & down the piston all around the skirt (or just use a fine file!). That's what it will look like after it's been run without an air filter. Damage will also be done to the bore & I don't even want to think about where all the metal shavings & grit that caused them went after it got out of the bores.
My son on my old 74 CZ 400...
Rich
Burning Brakes
Joined: Sep 2006
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From: Palm City, FL
Race Director
Joined: Mar 2006
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From: Florida
It said if it increased airflow and was a stock replacement size it allowed more damaging particles by.
I used to use the socks on bikes years ago too.
I guess do your own tests to be sure.
One oil analysis with K&N
Another with stock filter
Le Mans Master
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Racer
Joined: Jan 2007
Posts: 325
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From: Ocala FL
I spent 13 years working for a filter company. K&N makes an excellent clean oil and reuse filter, but it isn't just thin piece of foam like in the Edlebrock or Weiand traingle.
K&N's filter let's about 10% more stuff through than Purolator. Lower pressure drop is factor of two criteria. Surface area and the base restriction per square inch of filter media.
The k&n (dry) has lower pressure drop than Purolator. K&N (oiled) has a higher pressure drop per sqaure inch.
Look closely at a stock element and a K&N you'll see the K&N has more pleats. They have about 15% more surface area than a stock unit.
K&N's filter let's about 10% more stuff through than Purolator. Lower pressure drop is factor of two criteria. Surface area and the base restriction per square inch of filter media.
The k&n (dry) has lower pressure drop than Purolator. K&N (oiled) has a higher pressure drop per sqaure inch.
Look closely at a stock element and a K&N you'll see the K&N has more pleats. They have about 15% more surface area than a stock unit.
Racer
Joined: Apr 1999
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From: libby mt.
Years ago, we would get dune buggies into the volkswagon shop I worked at with a complaint of no power. The owners had left the old oil bath filters on and had sucked so much sand through the engine there was no longer any compression at all.