 Carbs vs Altitude, When does it start to be felt? |
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| Allan |
 Dec 3 2005, 10:30 AM
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#1
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Teenerless Weenie  Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California  |
I know it's really not that important to me right know being that my car is sitting in someone else's garage but WHEN I get it back and completely dialed in, at what altitude do carbs start complaining?
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| SLITS |
Dec 3 2005, 10:35 AM
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#2
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
They don't complain....they jes get fat
And I doubt that you are going to stop and change jets to run above 5000' On second thought, you could install a mixture control knob like on aircraft with some "minor" modifications to your Webers (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) Or maybe you could borrow Britt's Barometric compensator (IMG:http://www.914world.com/bbs2/html/emoticons/lol2.gif) Hi Allan & Good Morning |
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| Allan |
Dec 3 2005, 10:37 AM
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#3
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
So 5000' is the number?
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| SLITS |
Dec 3 2005, 10:42 AM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Each 1000' of altitude will induce minor varations.....5000' is a good number to me as the varations are cumulative.
When taking off from a high altitude airport, it was common to run the mixture control for max power...... Now that that's said.....altitude is not the only factor...temperature, humidity, etc are also factors |
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| SpecialK |
Dec 3 2005, 11:15 AM
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#5
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aircraft surgeon Group: Benefactors Posts: 3,211 Joined: 15-March 04 From: Pacific, MO Member No.: 1,797 |
I remember driving from San Diego, to Denver. Car (not a porsche) got progressively worse, but "hit a wall" at around 8000'. Felt like I was pulling a 5th-wheel!
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| Gint |
Dec 3 2005, 04:03 PM
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#6
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Mike Ginter Group: Admin Posts: 16,075 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
This I can speak to from experience. I've driven my fair share of cars (carbuerated mostly) from the west coast to Denver. With carb'd cars, I always can feel a noticeable difference as soon as I hit 4000 feet. Around 10k+ you don't want to stop 'cause some cars can be a PITA to get the car started again. They will start, but takes some cranking. When I have to stop at that kind of altitude, I like to park downhill so I can roll start if need be. Now all of that is moot if you rejet as soon as you get to altitude.
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| Flat VW |
Dec 3 2005, 04:18 PM
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#7
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Illegal Soapbox Derby Racecar Group: Members Posts: 1,692 Joined: 13-November 04 From: Phoenix, AZ Member No.: 3,105 |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) The other variable for me on the way to the Fall Foliage Classic ,at least, was that the car was packed to the gills. I bet the car gained 300 lbs. in just cargo, plus a full tank of gas, etc. I "pulled" my first mountian at about 4000' elevation, and I thought I might just cry, the power was so diminished. (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) Once I got to approx. 2,000' elevation, it was not near as noticable. John |
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