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Old 11-28-2012, 02:54 AM   #126
10splaya22
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Quote:
Originally Posted by spotter29
i get out of bed and start the car, take a shower and get ready for work.. let it idle for about 30 minutes on average. yeah its overkill but im sure as hell not running outside in a towel in the middle of winter to start the car for 10 minutes. she's ready to rip by the time i am
This is a horrible idea unless you like to throw money away. If you do you can send some my way
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Old 11-28-2012, 07:50 AM   #127
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Quote:
Originally Posted by Dusten View Post

You don't race your wrx? My Lightning built motor will last me 100k and I don't wait for oil temps to be "normal"
Doubt it
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Old 11-28-2012, 08:00 AM   #128
HonduhPowa
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I let mine warm up for 10 minutes before i drive it, i also have remote start and live in Michigan (which is currently cold as balls) so it works out well.
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Old 11-28-2012, 08:04 AM   #129
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10 min... Then when I get in her she is nice and warm
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Old 11-28-2012, 09:47 AM   #130
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Quote:
Originally Posted by spotter29 View Post
i get out of bed and start the car, take a shower and get ready for work.. let it idle for about 30 minutes on average. yeah its overkill but im sure as hell not running outside in a towel in the middle of winter to start the car for 10 minutes. she's ready to rip by the time i am
Quote:
Warming up the vehicle means more than warming the engine. The tires‚ transmission‚ wheel bearings, catalytic converter and other moving parts also need to be warmed up for the vehicle to perform well. Most of these parts don't begin to warm up until you drive the vehicle.
Idling Facts and Myths
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Old 11-28-2012, 09:59 AM   #131
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Originally Posted by HonduhPowa View Post
I let mine warm up for 10 minutes before i drive it, i also have remote start and live in Michigan (which is currently cold as balls) so it works out well.
I never understood why people say that. Balls are pretty warm XD
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Old 11-28-2012, 11:14 AM   #132
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I just wait until the blue temp light on the dash goes away and the the revs drop to normal idle usually. I have a 2012 Impreza Premium sedan.
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Old 11-28-2012, 11:16 AM   #133
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About 90 seconds when its cold outside, this is usually when the needle drops from ~2000 RPM to ~1550 RPM. Then I drive really pokey until the blue temp light on the dash goes out.

2012 Impreza w/CVT.
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Old 11-28-2012, 11:20 AM   #134
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10-15 minutes.

I live close to work. It's -20C and below in the mornings now. I like to at least get my car to operating temp before i arrive at work.
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Old 11-28-2012, 01:18 PM   #135
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Originally Posted by J-hop View Post
Well this thread isn't about drag cars. Second, most serious drag cars aren't expected to last 200k miles on the same engine.

I honestly fail to see how comparing drag racing to daily driving applies to this thread
Most people don't drag race when it's 20 degrees out either. Plus, by the time you wait in line and make it to the actual staging area, your car is plenty warm.

I don't warm my car up. I try to keep it at 2K RPMs or less before it's fully warmed up, but other than that, no.
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Old 11-28-2012, 01:40 PM   #136
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You have heard of flat foot shifting? Well I do flat foot starting. Pedal to the floor then drop the clutch when it starts.

Seriously... any more than 15 seconds when its above freezing is too long. When it is -20 I would recommend at least 2-3 minutes.
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Old 11-28-2012, 02:27 PM   #137
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Originally Posted by easterbran View Post
I never understood why people say that. Balls are pretty warm XD
Hahaha very true.
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Old 11-28-2012, 06:23 PM   #138
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Well I Warm my car for about 10 to 15 Minutes .
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Old 11-28-2012, 11:05 PM   #139
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Funny I just took a National Safety Council defensive driving course today, they clearly state not to idle at all; even in the coldest winter days. Just drive it slow out of your neighborhood. Cold idling actually harms your engine. Look up the link posted above by SWP n GOLD.
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Old 11-29-2012, 08:21 AM   #140
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Originally Posted by flk View Post
Cold idling actually harms your engine. Look up the link posted above by SWP n GOLD.
That is honestly the dumbest thing I've ever heard anybody say. If "cold idling" hurts your car, then how would driving at 3k RPM under load cold not? Especially for us built motor folks, letting our motors reach operating temps is crucial. Forged pistons take significantly longer to warm up and expand compared to hypercast, which is why you often hear piston slap in built motors.
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Old 11-29-2012, 08:51 AM   #141
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30 seconds at most then one of the ways I go in the morning starts with the first 3 miles downhill and ten of the first fifteen are all down, the other way there's a short downhill and then a 1/2 mile steep uphill. On cold mornings I try to go the first way and coast the majority of the dh distance. I've found that my cars really like this but rolling like that with no load on the drivetrain the car takes forever to warm up inside but I know it's the best way for the tranny, etc. to come up to temp.
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Old 11-29-2012, 06:26 PM   #142
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Im from sweden and right now its -2 degrees outside normaly i let it idle for 30 secs and then i go , never reving over 2500 when oil temp is outside the 60+ degrees range and never run full before 85-90 Been working with all my cars even my previous Nissans with highly tuned engines! And if it work on a Nissan engine it should work on any as their bearings are really squishy so to speak
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Old 11-29-2012, 07:14 PM   #143
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7 minutes
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Old 11-29-2012, 07:15 PM   #144
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longer if under 25
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Old 11-29-2012, 07:59 PM   #145
peterbradshaw
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This morning I let it idle for about 3 mins before I got in and drove off....just long enough to scrape all the ice off my windows. Was under 30 this morning in Joisey!
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Old 11-29-2012, 08:02 PM   #146
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depends if im late which is kinda usual
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Old 11-29-2012, 10:44 PM   #147
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I don't warm her up. I started her on the first day we met at the dealership and she's been running ever since.
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Old 11-29-2012, 11:10 PM   #148
blueninja85
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I personally just start and go. Of course I keep the revs low until the car is at the appropriate operating temperature. But I don't really like to let the car sit to warm up, because during that time period, it's burning fuel, which equals a waste of money.
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Old 11-29-2012, 11:30 PM   #149
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Quote:
Originally Posted by mackeymx View Post
That is honestly the dumbest thing I've ever heard anybody say. If "cold idling" hurts your car, then how would driving at 3k RPM under load cold not? Especially for us built motor folks, letting our motors reach operating temps is crucial. Forged pistons take significantly longer to warm up and expand compared to hypercast, which is why you often hear piston slap in built motors.
Hi, no one is debating that you need to have your engine warm up. What is bad is cold idling to warm up vs. driving it right away.

Quote:
When an engine idles it is not running at its optimum operating temperature and condition. This results in the incomplete combustion of gasoline that can leave fuel residues on the spark plugs, the cylinder walls, and other engine parts. These residues can corrode the engine parts, thereby shortening the life of the system, and can impair fuel efficiency when driving by as much as 4 to 5%. When we idle we are neither protecting our car engines nor saving fuel. Rather, we are degrading the engineís ability to operate smoothly and efficiently while actually wasting gasoline.

[...]Thus, the best way to warm up a car is to drive it moderately for several miles within 10 seconds of starting the engine. Once the car is warmed up, any non-active traffic pause of more than 10 seconds will result in wasted gasoline, needless pollution, and possibly degradation of the carís performance and mileage.
Hinkle Anti-Idling Primer

Quote:
It's important to drive away as soon as possible after a cold startā while avoiding high speeds and rapid acceleration for the first five kilometres. This allows the whole vehicle to reach peak operating temperature as quickly as possible without paying a fuel penalty.

Temperature tests on engine coolant conducted by the Ontario Ministry of Transportation investigated whether idling was an effective way to warm up engines in cold weather. The tests measured the amount of time needed to raise the coolant temperature from -100C to its normal operating temperature of 800C. By driving the vehicle just after start-up (when the oil pressure is up), the coolant temperature rose to 800C in just 12 minutes. By contrast, it took 30 minutes to raise the coolant temperature to that level while idling the vehicle. Driving away after start-up also gets the drive train working, warms up the differential oil and transmission oil, and warms up the tires so they can roll better. Idling can't do any of this, no matter how long you wait.
DADA Canada

Quote:
Myth #1: The engine should be warmed up before driving.
Reality: Idling is not an effective way to warm up your vehicle, even in cold weather. The best way to do this is to drive the vehicle. With today's modern engines, you need no more than 30 seconds of idling on winter days before driving away.
Consumer Energy Center

Quote:
Lets get some*thing straight. Car engines DONíT ben*e*fit at all from being warmed up before dri*ving. Youíre actu*ally hurt*ing your engine and pol*lut*ing the envi*ron*ment the most by let*ting your cold engine idle.

The best thing to do is to turn the engine on and imme*di*ately start dri*ving it lightly. That way you are warming up the engine to itís opti*mal tem*per*a*ture as fast as possible.

[...]This is a ter*ri*ble habit because your engine strug*gles to warm up in sub freez*ing tem*per*a*tures, and until it does, it may take up to 15 min*utes and all the while it is expe*ri*enc*ing extreme wear and tear. So please warm your car up by dri*ving it off the moment you turn the engine on.
Antranik
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Old 11-30-2012, 08:55 AM   #150
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Originally Posted by mackeymx View Post
That is honestly the dumbest thing I've ever heard anybody say. If "cold idling" hurts your car, then how would driving at 3k RPM under load cold not? Especially for us built motor folks, letting our motors reach operating temps is crucial. Forged pistons take significantly longer to warm up and expand compared to hypercast, which is why you often hear piston slap in built motors.

So not sure if this applies in cars or not, but at least in the snowmobile (and to some extent, PWC's) world, you have to let engines with forged pistons warm up until the heat exchangers have some heat. If you start it and then get on the throttle too much, the pistons expand faster than the cylinders, and you get an instant cold seizure!
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