Mechanical question, about the cars

B

Betsy

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Please do not speculate!! I need the true answer to solve an argument... I do not give a damn what YOU use!
I am on the edge of an argument about air cleaner filters. It seems there is a type of air cleaner that requires itself to be OILED frequently. The conversation got around to NASCAR and some in the argument think one way and others think the opposite..
Who knows about the intake air in the NASCAR engines? Not any stickers PLEASE? Stickers mean nothing.
But really is the air cleaned at all? If so with WHAT?
I am sure someone here knows the PURE TRUTH of this question.
Betsy :katts:
 
Betsy,

The type of air filter which needs to be cleaned an oiled is the foam element type, used for the most part on things like lawn and garden equipment.

Most of the racers use the same type of dry cloth-paper air filter common to the auto industry today.
The racing filters usually are designed to offer better filtration without as much restriction as the cheaper filters found at your dealer or auto supply store.

A lot of work has been done on the design of the air filter housing, the location of the air inlet and the shape of the housing base to promote better airflow into the carburetor.

I can remember when nearly all racers used nothing more than a velocity stack, just a straight piece of tubing cut off at an angle, that extended up from the top of the carb, or nothing at all. Other guys might wrap some fine wire mesh around the carb top to keep out the big chunks, but that was about all.
Needless to say, all the dirt and dust ingested into the engine did not do much for longevity.

With the advent of the low restriction cloth-paper elements nearly all classes of racers have adapted their use. The cost of the elements is returned many times over in the savings in wear on expensive engine internal parts.

Hope this helps.
 
Betsy,

I may have led you astray here. I just checked the K&N filter page and find that they indeed do offer a cleanable filter element, along with a special cleaning kit which includes an oil spray to apply after cleaning.

This may be used by some teams and is possibly what your friends are talking about. It could well be that both sides of the argument are correct this time.

Sorry I misled you with the previous post. Old man suffered a brain cramp I guess.
boB
 
Yeah Bob I have em too! My question was directed directly at the K&N filters.. Big arguement here about them and air cleaners in general. Fists clenched and all that.
I really need to KNOW from the horses mouth just what IS USED by the teams.. Even is there a RULE? Maybe's and might's ain't gonna end this fight.
Honey did write a question on DW's site but I do not expect an answer.
Betsy
 
Betsy,

I didn't have the answer for you as I haven't been involved in the garage for a few years, so I made a phone call to a friend who is. Being in the business, he's pretty much up to date on the rules.
According to him, all teams are required to run the dry filters. He isn't sure if it is in the rule book or if it was one of the many technical bulletins issued by NASCAR, but he is sure that the K&N oiled filters are not allowed in any of the top divisions currently.
 
This is probably not what you are looking for but WIX Filters becomes the Officially Licensed Filter of NASCAR in 1996.

And, for the NASCAR Super Late Model Rules:
Only a round dry type paper air filter element maintaining a minimum of 12 inches and a maximum of 14 inches in diameter will be permitted. The air filter element must maintain a minimum of 1-1/2 inches and a maximum of 4 inches in height. All air must be filtered through the element. The air filter elements must not be sprayed or soaked with any type of chemicals or liquids.
Click to expand...
 
There ya go Betsy.

Barelypure confirmed what my source told me.
My latest copy of the rule book is from 2003 and only makes mention of the dimensions of the filter element, nothing about spraying it with any chemical substances.
Thanks for the update Bp.

Just got a phone call from the fellow i talked to earlier. He confirms that the rulebook requires a dry type paper element.
 
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