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Winter weather

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Old Oct 24, 2006 | 07:52 PM
  #1  
z28 NyC's Avatar
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From: Queens, Ny
Car: 1986 Camaro z28
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Transmission: 700r4/ B&M mega shifter
Winter weather

I havent been running a carb setup for long but I hear that they hate the cold. Iam I gonna have trouble starting my car up every morning ?
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Old Oct 24, 2006 | 08:50 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No, when properly set up and adjusted, they do just fine in the winter. I drive mine year round.
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Old Oct 24, 2006 | 09:15 PM
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z28 NyC's Avatar
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From: Queens, Ny
Car: 1986 Camaro z28
Engine: 305 tpi/light mods
Transmission: 700r4/ B&M mega shifter
Cool, iam glad to hear. That I was afraid of somthing they call "iceing" that supposed to have a bad affect on carbs in the winter.
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Old Oct 24, 2006 | 09:24 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The stock factory air cleaners have a snorkel with a vacuum operated, temperature controlled valve to bring warm air up from the exhaust manifold when needed. People who have problems with carb icing have, in their infinate wisdom, eliminated that system. The problem is further reduced with the 10% ethanol gas we've got these days.
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Old Oct 24, 2006 | 10:28 PM
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Tim, you drive your 300+ HP camaro in COLORADO in the winter? hooboy, you are a brave man. Sand bags and studded tires?

Just make sure you have a choke, and it's setup correctly. The thermac that 57 was talking about is a nifty feature which makes life considerably better, but if you have a good working choke, you can just crank up the idle speed and let it idle before driving it, and try and plug in the car when it's REAL cold.
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Old Oct 24, 2006 | 11:22 PM
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
I have a dual feed Holley, electric choke, and a open air cleaner with no heat to it. Even an Air Gap intake, lol. Its never had any problems starting at -50*C last winter and warming up just fine, and I don't see it being much different this winter.

Five7 is right... an air cleaner with heat provisions, like the factory ones have, is better in cold weather, but it isn't totally necessary. Like I said, I've never had a problem. I do plug my car in when it gets below -15*C at night though, and my fast idle is around 1200 ice cold, and about 1600-ish once its got a bit of heat in it.
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Old Oct 25, 2006 | 12:51 AM
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From: Northern CA.
Car: '82 Z28
Engine: 350
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Axle/Gears: Currie 9", 4.56 gears
Oh no! cold weather and a carb! What do you think people had before fuel injection came out?
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Old Oct 25, 2006 | 02:00 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally Posted by Sonix
Tim, you drive your 300+ HP camaro in COLORADO in the winter? hooboy, you are a brave man. Sand bags and studded tires?

Just make sure you have a choke, and it's setup correctly. The thermac that 57 was talking about is a nifty feature which makes life considerably better, but if you have a good working choke, you can just crank up the idle speed and let it idle before driving it, and try and plug in the car when it's REAL cold.
Drive it year-round in Colorado - yes. Brave, not really. Studded tires, yes. Studded tires on right now, no, but a storm is coming in tonight so they might be on tomorrow morning.

The choke isn't a cure-all for no thermovac. An off-idle dead spot is very common with q-jets without the thermovac in cold weather after the choke is open.

Last edited by five7kid; Oct 25, 2006 at 02:03 PM.
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Old Oct 25, 2006 | 08:01 PM
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
An off-idle dead spot is very common with q-jets without the thermovac in cold weather after the choke is open.
Interesting.... Wouldn't that be like using a cold air intake though? Cold air in a relatively warmed up engine?
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Old Oct 26, 2006 | 12:04 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If the cold-air inlet(s) goes past a thermovac system, you're going to get the warm air to the carb.
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Old Oct 27, 2006 | 01:55 PM
  #11  
z28 NyC's Avatar
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From: Queens, Ny
Car: 1986 Camaro z28
Engine: 305 tpi/light mods
Transmission: 700r4/ B&M mega shifter
Iam i have no emmision on my engine its just the carb with a air fiter, soo guess the cold air is doing more good then harm. . . . ? I do hear guys talking about how cool days at the track are the best, what do you guys think ?
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Old Oct 27, 2006 | 02:31 PM
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five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I assume you're talking about an open-element type air cleaner. They are good for the amount of air they flow, but are bad in just about every other way.

When the weather is cold, the lack of the warm air system will produce the dead spot I was talking about. It can be severe, especially when the engine is partially warm so that the choke is off or mostly off, but the engine isn't warm enough yet to properly vaporize the fuel in the intake manifold.

When the weather is warm, the lack of a snorkel to get cool air from outside of the engine compartment causes the engine to injest warm under-hood air, the opposite of what you are saying is a good thing.

So, open element air cleaners cause more problems than they solve, especially in our cars with their hot under-hood temperatures and emissions-oriented carb tuning.
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Old Sep 9, 2008 | 10:19 PM
  #13  
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Re: Winter weather

What should I do, I have headers and an open element. I am planning on getting a block heater for sure,,, I have a 750CFM holly with elec, choke.
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Old Sep 10, 2008 | 05:31 PM
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Winter weather

Originally Posted by Jammin'Trey
What should I do, I have headers and an open element. I am planning on getting a block heater for sure,,, I have a 750CFM holly with elec, choke.
See my post above.
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