Re: whats the coldest temp you'd start your car at?
[Re: Dart 340]
#189852
01/12/09 10:31 PM
01/12/09 10:31 PM
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Joined: Aug 2006
Posts: 247 DuPont, Washington
DZJim
enthusiast
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enthusiast
Joined: Aug 2006
Posts: 247
DuPont, Washington
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Quote:
Quote:
wind chill only affects warm blooded people/animals. It can drop the temp of an object faster than it would drop if there was no wind but it doesn't drop it below the ambient temp.
Right on RR
Also guys keep in mind the clearances between things are a lot different at cold temps vs hot temps. I'd freak out more trying to run a hot engine with no oil pressure at start up vs a cold one.
Hmmm; I'm no expert, but seem to me like there is zero clearance until an oil film is established; and the lesser viscosity lubricant will be pumped to the surfaces sooner than the thicker stuff. Just my $0.02
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Re: whats the coldest temp you'd start your car at?
[Re: DZJim]
#189853
01/12/09 10:56 PM
01/12/09 10:56 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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That's why I use my accusump religiously, a quarter turn flip of the handle, in 6 seconds the psi is up. It's not reaching all of the rods due to the crank position/oiling holes with my half groove main bearings but it's much better than not using one.
live every 24 hour block of time like it's your last day on earth
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Re: whats the coldest temp you'd start your car at?
[Re: DZJim]
#189854
01/13/09 09:32 AM
01/13/09 09:32 AM
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Joined: Apr 2008
Posts: 1,195 Snowing in the north!
Dart 340
moparts member
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moparts member
Joined: Apr 2008
Posts: 1,195
Snowing in the north!
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Quote:
Quote:
Quote:
wind chill only affects warm blooded people/animals. It can drop the temp of an object faster than it would drop if there was no wind but it doesn't drop it below the ambient temp.
Right on RR
Also guys keep in mind the clearances between things are a lot different at cold temps vs hot temps. I'd freak out more trying to run a hot engine with no oil pressure at start up vs a cold one.
Hmmm; I'm no expert, but seem to me like there is zero clearance until an oil film is established; and the lesser viscosity lubricant will be pumped to the surfaces sooner than the thicker stuff. Just my $0.02
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Re: whats the coldest temp you'd start your car at?
[Re: Dart 340]
#189857
01/13/09 10:30 AM
01/13/09 10:30 AM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Quote:
Quote:
Quote:
wind chill only affects warm blooded people/animals. It can drop the temp of an object faster than it would drop if there was no wind but it doesn't drop it below the ambient temp.
Right on RR
Also guys keep in mind the clearances between things are a lot different at cold temps vs hot temps. I'd freak out more trying to run a hot engine with no oil pressure at start up vs a cold one.
Hmmm; I'm no expert, but seem to me like there is zero clearance until an oil film is established; and the lesser viscosity lubricant will be pumped to the surfaces sooner than the thicker stuff. Just my $0.02
There is a residual oil film maintained and the mains and rod bearings will receive oil before slightly before the gauge shows pressure. Off topic but ever when a lifter pops out of the bore and the oil pressure drops to 0 because of a large flowage at the lifter bore the mains and rod bearings should still be oiling as they are first in line for oiling and the oil flows from them to the cam and lifters and the pressure line is in teh line above the bottom end bearings.
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Re: whats the coldest temp you'd start your car at?
[Re: buildanother]
#189866
01/14/09 10:28 PM
01/14/09 10:28 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
Joined: Jul 2006
Posts: 4,179
California
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back in the day my hemi gtx was my daily driver. lived in colorado, and used to fire it up almost every day. i'm sure there were a few times when it wouldn't start, but i don't specifically remember. one time, driving down a snow packed road, i thought hmmmm.... put it in 4th gear, dumped the clutch, and buried the 150mph speedometer, all while doing about 5 mph
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Re: whats the coldest temp you'd start your car at?
[Re: MoparforLife]
#189868
01/14/09 11:48 PM
01/14/09 11:48 PM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
8:30PM now and -26 and dropping. Vehicles will be going in the morning.
I guess that answers the original question!
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