car runs faster at cold temp....why??
09-20-2006, 12:13 AM
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car runs faster at cold temp....why??
ok ive notice that my car runs a little faster when its cold....when the car reaches its regular temp the car itsa little bit slower....why is that??? ohh my car is a 97 GS
09-20-2006, 04:22 AM
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Re: car runs faster at cold temp....why?? (aquito)
Colder air molecules are smaller. Therefor you can fit more into your combustion chamber opposed to hot. Hot air molecules are more expanded so you can't fit as much.
09-20-2006, 06:03 AM
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Re: car runs faster at cold temp....why?? (integ401)
Yeah that's normal, it's a small hp difference, but when u rev and race ur motor when it's cold it puts more wear on ur motor so I wouldn't reccomend doing all ur racing when ur engine's cold.
09-20-2006, 08:49 AM
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Re: car runs faster at cold temp....why?? (JasonST)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JasonST »</TD></TR><TR><TD CLASS="quote">Yeah that's normal, it's a small hp difference, but when u rev and race ur motor when it's cold it puts more wear on ur motor so I wouldn't reccomend doing all ur racing when ur engine's cold.</TD></TR></TABLE>
i dont think he means when the engines cold. hes talking about when its cold as in the the weather
i kinda wana feel how it is when i rip mine in the winter
i dont think he means when the engines cold. hes talking about when its cold as in the the weather
i kinda wana feel how it is when i rip mine in the winter
09-20-2006, 09:48 AM
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Re: car runs faster at cold temp....why?? (LoseRPunKx182)
ok if u mean when the engine is cold it revs higher... tahts normal your car will hold a higher idle until the engine is completely warmed up
if you mean it seems faster or has more "pep" then that is because the cold air basically "crams" more air into your engine and your engine dumps more fuel in
hence the idea behind a cold air intake or using an intercooler to cool the air from a turbo setup
if you mean it seems faster or has more "pep" then that is because the cold air basically "crams" more air into your engine and your engine dumps more fuel in
hence the idea behind a cold air intake or using an intercooler to cool the air from a turbo setup
09-20-2006, 10:01 AM
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Re: car runs faster at cold temp....why?? (JRTegman)
umm no an intercooler has a slightly different concept...purpose of an intercooler is to bring the pressurized hot air, (when you put something under pressure the temperature can go up drastically, which can lead to detonation) to ambient temperatures, this way your IAT remains safe
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09-20-2006, 10:04 AM
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Re: car runs faster at cold temp....why?? (aquito)
if you want a more technical explanation, the air molecules dont get smaller.....
At almost any given temperature all gasses, liquids and even solid's molecules have movement. The more they move and bump into one another, the hotter the substance gets. Once it reaches a certain level of activity, or kenitic energy generated heat, it will change states. The less movement they have, the 'colder' it gets.
For example, imagine a 2x2 foot square drawn on your floor. Space several tennis ***** about 4 inches apart from each other in any direction inside the square. This is what the air looks like when its hot, the molecules are spaced far apart and there is a lot of empty space. Now, move all the tennis ***** to where they are touching each other, and you end up with alot of extra space to add more *****, or in our case more air.
So, in a way integ401 was right, but its not the actual molecules that are changing in size, but the rate of movement that allows the air charge to become more dense, and as we all know more air=potentially more power.
At almost any given temperature all gasses, liquids and even solid's molecules have movement. The more they move and bump into one another, the hotter the substance gets. Once it reaches a certain level of activity, or kenitic energy generated heat, it will change states. The less movement they have, the 'colder' it gets.
For example, imagine a 2x2 foot square drawn on your floor. Space several tennis ***** about 4 inches apart from each other in any direction inside the square. This is what the air looks like when its hot, the molecules are spaced far apart and there is a lot of empty space. Now, move all the tennis ***** to where they are touching each other, and you end up with alot of extra space to add more *****, or in our case more air.
So, in a way integ401 was right, but its not the actual molecules that are changing in size, but the rate of movement that allows the air charge to become more dense, and as we all know more air=potentially more power.
09-20-2006, 10:10 AM
#9
your cars automatic choke is causing it to idle higher because it is allowing more fuel than air into your engine, when the engine warms up the choke opens and the engine will run as normal
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09-20-2006, 10:25 AM
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Re: car runs faster at cold temp....why?? (integ401)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integ401 »</TD></TR><TR><TD CLASS="quote">Colder air molecules are smaller. Therefor you can fit more into your combustion chamber opposed to hot. Hot air molecules are more expanded so you can't fit as much. </TD></TR></TABLE>
pretty much. colder air is more condense is what it comes down to
pretty much. colder air is more condense is what it comes down to
09-20-2006, 11:07 AM
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Re: (ichbinsobose)
i don't feel this? when my car is cold and warming up (granted i always let it warm up before even driving above 3k rpm's) its very un-responsive. then it warms up and feels good.
09-20-2006, 12:07 PM
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Re: (ichbinsobose)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ichbinsobose »</TD></TR><TR><TD CLASS="quote">the important thing is too race your car to redline while its still nice and cool on winter mornings</TD></TR></TABLE>
that stupid. first of all you shouldnt be racing on public roads, thats why the import world has such a bad rep. becuase stupid kids like to race and indanger others.
and second, its not good to rev you car to the redline when its cold like that. when the car first starts like that, oil hasnt reached the head and not everything is properly lubricated. keeping your temp down is okay, dont get my wrong, but to start you car first thing in the morning and then go screaming down the street is a HORRIBLE idea.
that stupid. first of all you shouldnt be racing on public roads, thats why the import world has such a bad rep. becuase stupid kids like to race and indanger others.
and second, its not good to rev you car to the redline when its cold like that. when the car first starts like that, oil hasnt reached the head and not everything is properly lubricated. keeping your temp down is okay, dont get my wrong, but to start you car first thing in the morning and then go screaming down the street is a HORRIBLE idea.
09-20-2006, 12:24 PM
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Re: (97gsrjames)
that stupid. first of all you shouldnt be racing on public roads, thats why the import world has such a bad rep. becuase stupid kids like to race and indanger others.
and second, its not good to rev you car to the redline when its cold like that. when the car first starts like that, oil hasnt reached the head and not everything is properly lubricated. keeping your temp down is okay, dont get my wrong, but to start you car first thing in the morning and then go screaming down the street is a HORRIBLE idea.
lol
youre pathetic, kill yourself
"racing" gving the scene a shitty reputation...no fuckhole, its morons like you. learn to read, and i think you should race your car to the redline on winter mornings too. its common honda-tech knowledge that cold engines perform better.
thanks for making an *** of yourself, ****
and second, its not good to rev you car to the redline when its cold like that. when the car first starts like that, oil hasnt reached the head and not everything is properly lubricated. keeping your temp down is okay, dont get my wrong, but to start you car first thing in the morning and then go screaming down the street is a HORRIBLE idea.
lol
youre pathetic, kill yourself
"racing" gving the scene a shitty reputation...no fuckhole, its morons like you. learn to read, and i think you should race your car to the redline on winter mornings too. its common honda-tech knowledge that cold engines perform better.
thanks for making an *** of yourself, ****
09-20-2006, 12:31 PM
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lol alright. go ask mom for some gas money. cold engines run better, but why the expletive would you race your car on a winter morning, and when you had just started the car. if you think thats best for your car, you need to buy a clue, not a car.
im afraid that you ARE the kinda kid that give us a bad rep, and i think anyone here would agree. "its important to race your car to redline on winter mornings" nothing more needs to be said. you already made a total *** of yourself.
i honestly think you need to watch the way you talk. calling me obsured names isnt getting you anywhere. all it did was make you look like an jurk.
im afraid that you ARE the kinda kid that give us a bad rep, and i think anyone here would agree. "its important to race your car to redline on winter mornings" nothing more needs to be said. you already made a total *** of yourself.
i honestly think you need to watch the way you talk. calling me obsured names isnt getting you anywhere. all it did was make you look like an jurk.
09-20-2006, 12:42 PM
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Re: (97gsrjames)
need some vagicil? you dont belong in a tech forum, along with 85% of the posts in it.
OP
cold engine running = good
engine started cold with out warmup and raped = bad
cold by honda standards yet still good is close to 200*
cai doesnt actually intake coldair
cold days will actually reduce your performance occasionally becuase stock ecus have difficulty compensating for this, but it will lean/rich it out a bit so it will feel a little better
OP
cold engine running = good
engine started cold with out warmup and raped = bad
cold by honda standards yet still good is close to 200*
cai doesnt actually intake coldair
cold days will actually reduce your performance occasionally becuase stock ecus have difficulty compensating for this, but it will lean/rich it out a bit so it will feel a little better
09-20-2006, 01:22 PM
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Re: (ichbinsobose)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ichbinsobose »</TD></TR><TR><TD CLASS="quote">need some vagicil? you dont belong in a tech forum, along with 85% of the posts in it.
OP
cold engine running = good
engine started cold with out warmup and raped = bad
cold by honda standards yet still good is close to 200*
cai doesnt actually intake coldair
cold days will actually reduce your performance occasionally becuase stock ecus have difficulty compensating for this, but it will lean/rich it out a bit so it will feel a little better</TD></TR></TABLE>
Que?
OP
cold engine running = good
engine started cold with out warmup and raped = bad
cold by honda standards yet still good is close to 200*
cai doesnt actually intake coldair
cold days will actually reduce your performance occasionally becuase stock ecus have difficulty compensating for this, but it will lean/rich it out a bit so it will feel a little better</TD></TR></TABLE>
Que?
09-20-2006, 07:09 PM
#23
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Re: (97gsrjames)
Dude it's better to wait till ur engine is warmed up to rev it to redline, that's why Honda made all their Vtec engines wait till the engine's warm to have vtec engage and rev to redline, it's not totally lubricated and puts more wear on the engine if it's cold and u rev it really high. Ichbinsobose don't be such a bich to other people, even if u know u're right and they're wrong, keep doing it and get kicked off of H-T. Keep the language and needless accusations down.
09-20-2006, 07:21 PM
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Re: (JasonST)
ok ok ok..enough everyone...the OP is not asking if its cool to run your car when barley started like mornings and not warming up, he's asking why the car feels better (faster) when the wheather is cold...
im not 100% shure why this happens, but i can tell you that YES, it does fell better, it maybe the molicule, and all that chemical stuff, and another reason why i feel that the engine feels better may be becuase the clutch is cold and grabs better
EDIT: oh GOD!!. i just revised the OP and yes!, he thinks that its faster when the CAR is cold....well....then again its in the mornings so its cold, nontheless, its stupid haulin *** before the engine reaches the normal temprature
just forget why i said
im not 100% shure why this happens, but i can tell you that YES, it does fell better, it maybe the molicule, and all that chemical stuff, and another reason why i feel that the engine feels better may be becuase the clutch is cold and grabs better
EDIT: oh GOD!!. i just revised the OP and yes!, he thinks that its faster when the CAR is cold....well....then again its in the mornings so its cold, nontheless, its stupid haulin *** before the engine reaches the normal temprature
just forget why i said