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Author
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Topic: Carb jetting for high humidity
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67Coupster
Gearhead Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001
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posted 04-15-2002 06:47 AM
   
Don't you jet down for high humidity conditions? When I was at the track yesterday it was very humid and a racer said to me I needed to richen it up because it was so humid. I thought when you have conditions like that you jet down to compensate for the lesser amout of air that the motor is taking in. Just checking  ------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'
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steve'66
Gearhead Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-15-2002 06:47 PM
James,I don't know about changing jetting just for a humidity change. Density altitude is much more important, and humidity is a factor in D/A but not all of the puzzle. SteveW
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67Coupster
Gearhead Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001
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posted 04-15-2002 09:02 PM
quote:
Originally posted by steve'66:
James,I don't know about changing jetting just for a humidity change. Density altitude is much more important, and humidity is a factor in D/A but not all of the puzzle. SteveW
Thanks Steve, I've got a lot to learn about carb tuning. Been playing with fuel injection too long, it makes it easy. ------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'
IP: Logged |
steve'66
Gearhead Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-15-2002 09:22 PM
James,I hope others chime in and educate both of us. I'm still trying to learn how to equate weather to predicted et's. I wouldn't try to re-tune for weather changes, just like to know what their effect is on the dial in. SteveW
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jsracingbbf
Gearhead Posts: 2954
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 04-15-2002 09:51 PM
Hey guys I learned a little bit about Air Density and weather stations by reading articles on them. I am by no means an expert. I can however give you a link to a great explanation on the subject. It really helped me allot. I printed a copy out to refer to in the trailer. Hope this helps! http://www.staginglight.com/guide/air.html
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Jerry Smith
69 Pro ET Mustang
514 cid Alcohol/ Enderle injection
5.60's@ 119 MPH 1/8th
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steve'66
Gearhead Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-15-2002 10:06 PM
Thanks Jerry,That article is what I meant to say. 
SteveW
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67Coupster
Gearhead Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001
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posted 04-16-2002 07:08 AM
Great article Jerry, thanks!------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'
IP: Logged |
jsracingbbf
Gearhead Posts: 2954
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 04-16-2002 08:48 PM
Any time guys, maybe I'm good for something after all Happy racing and kick some Camaro butt it will make your day!
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