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Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

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Old 08-10-2003, 11:46 PM   #1
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jetting an edelbrock 600cfm carb.

i bought the edelbrock 600cfm carb. (part # 1406) and i have know clue how to adjust it, so i just threw it on the car and it runs but really rich. how can i lean it out?
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Old 08-11-2003, 10:05 AM   #2
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swap the primary jetting and secondary jetting.

this will be a step in the right direction.
By swaping the .098 primary jets for the .095" stock secondary jets you will lean down the low speed and cruise "jetting by 12% and lean down the primary full power jetting by 4%
Secondary jetting will be richened 4%
for more tuning you'll need to buy a tuning kit
consisting of jets, metering rods, power step springs etc.

you can read all about tuning edelbrock carbs here

http://www.telusplanet.net/public/gi...delbrock_1.htm

read it, know it, there will be a test.
edelbrock carb do not like too much fuel pressure.
How much fuel pressure do you have at idle.
Should be 6 psi.
While you have the top off the carb swapping jets you can check the float height setting.

Last edited by F-BIRD'88; 08-11-2003 at 10:22 AM.
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Old 08-11-2003, 10:34 AM   #3
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How rich is it? and how do you know it's rich?
what symptoms do you observe?
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Old 08-11-2003, 04:42 PM   #4
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i can just smell the unburned fuel, i have alot of dirtbikes and i have jetted them i just didn't know really where to start with this. Thanks for the website F-BIRD'88 it helped alot. I haven't checked the fuel pressure yet so thats were i think i will start. Thanks again
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Old 08-11-2003, 04:42 PM
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