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Ok, I have a couple of questions that I hope you guys could answer for me.

How does elevation of land relative to sea level affect Quarter mile times? Does it have something to do with the air?

As far as I know, bigger tires means more work for the engine, yet cars on drag strips sometimes use radial tires above 20"?

SRI is for high end power, wouldn't it make more sense for people owning EX/SI to get a SRI as opposed to CAI? I mean the range for the SRI gains is in the same range as our VTEC, so won't that enhance that power? Or do people want a CAI to balance the powerband more? So they have low end and high end power?

What exactly does NA stand for? I know NA means no turbo right? Does it stand for anything? Not available [IMG]i/expressions/face-icon-small-confused.gif[/IMG] So basically NA is the more expensive route in souping up a car, and it's all motor work? What type of mods would fall under NA? Are force inducted cars faster than NA?

Is engine braking bad for the car? I know there are some debates that engine braking will mitigate brake pads from wearing, how will it wear your engine?

That's all I can think of for now I tried searching, but some of the threads don't really have the answer I'm looking for.

 
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naturally aspirated, ie no nitrous, turbochargers or superchargers

 
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yoru altitude has everything to do with air. lets say u are at sea level and u run a 16.00 in the 1/4. then u go to denver with is a mile high. you would run around a 17.5 1/4. the reason is bc the high up u are from sea level the less air u have.

 
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i think i can answer some of these:



<< How does elevation of land relative to sea level affect Quarter mile times? Does it have something to do with the air? >>


you have a better time at sea level vs. higher elevations. yes this is due to the air. air is denser closer to the ground and thinner the higher up you go. its b/c of this new thing called gravity. oh yea denser air give more power b/c it has more oxygen in it.




<< As far as I know, bigger tires means more work for the engine, yet cars on drag strips sometimes use radial tires above 20"? >>


its basically gearing. they are geared for those big tires, plus they make alot of power everywhere so they need to get the most out of their rpm range.



<< What exactly does NA stand for? I know NA means no turbo right? Does it stand for anything? So basically NA is the more expensive route in souping up a car, and it's all motor work? What type of mods would fall under NA? Are force inducted cars faster than NA? >>



are u joking?!?! NA stands for naturally aspirated. its when the car has no method to force extra air into the engine other than the vacuum generated by a downstroke of piston. NA is more expensive and for the same amount of money a FI car will make power but NA is generally more reliable. NA mods include:changing pistons, shaving head, port polish, bbtb, stiffer valve springs, head work---stuff like that.



<< Is engine braking bad for the car? I know there are some debates that engine braking will mitigate brake pads from wearing, how will it wear your engine? >>



actually i had a post about that not too long ago! anywho from what i can tell engine braking isn't bad for the car, matter of fact it doesn't care. the rpms are going to drop if you take your foot off the gas anyway, its the drag created by the compression that slows you down during engine braking. no engine wear at all unless you go over redline downshifting to engine brake.

i hope i could help ya man!

 
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1) They are both right about that, just think about runners that train in higher elevations and compete at sea level, they work harder at the higher elevations so they can preform better closer to sea level.

2)You can't really compare drag tires to street tires as they are made for different purposes. And I belive SuziQ is right.

3)SuziQ right agian!!!!

4)Engine breaking is good, saves ur brakes if used properly, can imporve your stoping distance, and if you know how to do this right you are just a better all around driver. Plus its just so much fun messing with the people behind you when u start slowing down but your brake lights arent coming on. (OK maybe its not but its a funny joke! HAHAHA)

 
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another fun thing to do with brakes.. at a red light, pull up your E-brake while you have the brake pressed down.. now after you have the e-brake up, start tapping on the brake as fast as you can. point is to make your braking lights flash really fast.. i was doin that today and the lady behind me had the funniest face. its great[IMG]i/expressions/laugh2.gif[/IMG]

oh, seems like they answered your questions, so i wont post it agian. lol

 
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Engine braking is fine... to be considerate to the life of the engine, don't let the downshift start @ over 5,000RPMs +. Going from 4th to 3rd is easy, but look out going from 3rd to 2nd. I downshift all the time.

 
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if u wanted the fastest time.. go to a beach!!!!!!!!!!!!!! thats what the domestic people did back in the days[IMG]i/expressions/moon.gif[/IMG]

 
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Oooh, good answers, I knew I could count on you guys ( =

I hope some of my questions weren't too stupid, I mean at least it's not another thread about AEM or Injen, hehe

 
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I would answer your questions but they've already been answered. I can tell you that since I live at 7000 feet above sea level my car sucks up here. I love going to Phoenix where its 2 or 3K above because my car's ***** drop and it hauls.

 
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Same thing I live in Prescott now were like 5,100 and when I go down to Phoenix its incredible I have lots of power off the line.

Nick