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11-28-2002, 12:44 PM
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#1 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,748
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tuning questions
So how do you adjust the carb for weather changes? I THOUGHT it was you needed richer as it got colder out. As the weather gets colder, it contains more oxygen. Therfor you need more fuel to compliment the larger amounts of oxygen. So I went from a 73/42 rod in my carb to a 70/42. It started blowing white smoke, too rich! Went back to the 73/42 and all was good. Did I go the wrong way?
Second, I finally found a edelbrock TV bracket. The only adjustable part on it is where the cable housing clicks into the bracket. At this point the bracket can be slid fowards and backwards. A generic bracket from checker can do this! Is that all that is supposed to adjust?
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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11-28-2002, 09:55 PM
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#2 |
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My other Love
Join Date: Aug 2001
Location: Castlegar B.C. Canada
Posts: 4,085
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With carbs you dont really have to adjust them for colder weather. Thats what a choke is for. What kind of 700r4 bracket is it. Is it from www.700r4.com?
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 Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life |
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11-29-2002, 11:56 AM
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#3 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,748
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There is no choke!
 Well it there, but its manual and its wired full open all the time.As for the bracket, I REFUSE to pay $90 for a bracket when it seems a checker $20 one works perfect. Its for a 2004R.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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11-29-2002, 12:07 PM
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#4 |
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Registered User
Join Date: Oct 2002
Location: Ontario, canada
Posts: 138
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You are right about the cold air containing more oxygen. 2-stroke engines require tuning for weather changes but 4-strokes are far more forgiving. Unless you were tuning for peak performance at a specific temperature you're best just to leave it the way it was. Like Hooter said, that's the job of the choke.
Ken I've have lived in a climate that varied between 95F in the summer and -30F in the winter, no carb changes were needed on a properly setup carburetor. What you do need though is an electric block heater........I'm sure anyone from Northern Manitoba or Northern Alberta can relate to this. |
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11-29-2002, 11:34 PM
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#5 |
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Dino burner
Join Date: Nov 2002
Location: Calgary, Alberta, Canada
Posts: 602
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I *LOVE* Canada!!!
.... and battery blankets and interior car warmers, too, Kopper!!
And Kopper's right about carbs being very forgiving. Temperature changes don't affect most of us. On my drag car, I'm constantly changing the jets in my Holley, but I'm racing at tracks of different altitude, and I'm running it much closer to "the edge" than any of my street engines. DJS |
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