:twitch: Is it safe to run the car without an intake filter? :twitch:

Information on the naturally-aspirated KA24E and KA24DE engines.
InsanityInc
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guyaverage wrote:The rest of your post was so good, but things got screwed up right about here. Your intake air is never that hot, except in a non-intercooled turbocharged application. But even then the turbocharged air is that hot because it is COMPRESSED, NOT because of its velocity. You can increase air velocity by heating it (i.e, a jet engine afterburner), but you will not heat air by increasing its velocity unless you COMPRESS it!
No, your intake air is actually that hot. You're making a number of mistakes.

First, you seem to have thrown friction out the window.

Second, you're assuming that the entire intake tract causes no pressure-causing restriction at all.

and third, for some strange reason you seem to think that the throttle body is acting as a venturi.


PandaS14
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running without one will not kill your engine immediately, but rather slowly. It'll just get slower and slower. If it's as easy as a $10 cone filter, do it.

end of story.

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Reno
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ive decided not to run my car at all :P

guyaverage
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InsanityInc wrote:
No, your intake air is actually that hot. You're making a number of mistakes.

First, you seem to have thrown friction out the window.

Second, you're assuming that the entire intake tract causes no pressure-causing restriction at all.

and third, for some strange reason you seem to think that the throttle body is acting as a venturi.
Holy crap, where do I even start...........

There is so much wrong in that post I dont even want to pursue it. You are so misinformed on this subject it would take me all day to set you straight.

If you think n/a engine intake air is that hot, you're out of your mind. If you think friction is a heating factor in automotive intakes, I am laughing out loud. And if you dont think a thottle body has venturi effect, I give up. Go back to school, or at least learn how to "google". At least type in "turbocharger intake air temperature" and start reading. I give up.

The guy bought a filter, thats all that matters.


DjPantsSpecR
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uh oh guy, you just opened up a can of worms

not only are you extremely incorrect, you're bashing someone who is actually knowledgable on the subject

my thermodynamics engineering professor would be quite "heated" if i didnt point that out, i just know it

alright worst joke ever, but seriously, maybe depend a little less on google and hit those books...

InsanityInc
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guyaverage wrote:If you think n/a engine intake air is that hot, you're out of your mind.
Not really. Look up intake air temperature sensor readings. 300 is probably high, but say 240+degrees isn't out of line.

Quote »If you think friction is a heating factor in automotive intakes, I am laughing out loud.[/quote]Friction is a massive factor in most any kind of pipe. Something that seems smooth to the touch isn't really all that smooth to a stray gas molecule. Why do you think air in the center of a pipe travels faster than the air on the walls of the pipe?

Quote »And if you dont think a thottle body has venturi effect, I give up.[/quote]Any venturi effect created by the throttle plate being partially open is going to be negated by the extreme flow turbulence around it.

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Red coupe
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a little late on this one but DO NOT PUT A DAMN SOCK OVER THE INTAKE!!!!sucking all that lint into the engine would probaly be worse then running without a filter....Fire CAN come out but it probably wont...But dust getting sucked in an sticking on cylinder walls is bad....how can you affored 30 bucks a tank of gas, insurance, registration, preformance aftermarket parts ect and you can't afford a cheap filter....

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Reno
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Red coupe wrote:a little late on this one but DO NOT PUT A DAMN SOCK OVER THE INTAKE!!!!sucking all that lint into the engine would probaly be worse then running without a filter....Fire CAN come out but it probably wont...But dust getting sucked in an sticking on cylinder walls is bad....how can you affored 30 bucks a tank of gas, insurance, registration, preformance aftermarket parts ect and you can't afford a cheap filter....
1. its a nylon pantyhose sock (No lint)2. my tank of gas can only hold 10 gallons.. roughly $22 in gas... MAX3. insurance is another story.. im not going to talk about it here.4. registration... comes once a year.....5. i dont buy
Red coupe wrote:preformance aftermarket parts ect.
6. i dont spend money where is not needed.... but in order to spend some cash i must work... which i am doing very well thank you. so in the meantime im levaing this p.o.s. inside a garage. while i build up cash or sell it.... dunno yet..

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surfwax95
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It's your car, do whatever the hell you want to do.

You know the facts and consequences.


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