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  Adjusting carter carb.

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Author Topic:   Adjusting carter carb.
66bluefb
Gearhead

Posts: 467
From: Okla.City,Okla.
Registered: May 2002

posted 12-21-2002 10:03 PM     Click Here to See the Profile for 66bluefb   Click Here to Email 66bluefb     Edit/Delete Message   Reply w/Quote
I have a 625 carter carb. and it bogs a little when I take of in first gear. I have changed the spark plug wires and reset the timing but it still bogs. It still runs great after the bog. When I first put the 302 in my car in August I got on it pretty good and when I hit 2nd it started missing for a minute. I have a cheap electric carter fuel pump and I figured I just run it dry. How do I adjust the screws on the front of carb?Anything else I should look at? Thanks, Tony

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http://ourworld.cs.com/blagintony/myhomepage/auto.html
86-302 HO bored .030 over crank .010 under
B-303 cam ,harland sharp roller rockers
performer rpm intake, 625 carter
66-289 heads, ported with 160-194 valves, 3 angle valve job
4 speed toploader
pony seats

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V8 Thumper
Gearhead

Posts: 3603
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 12-21-2002 10:48 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
The two screws at the front of the carb are the idle circuit adjusters... most accurately tuned with a vaccum gauge (you can do it by 'ear' too ). Turn one screw in at a time until the rpm's come up as high as they will. Keep turning until the motor starts to stumble, and then back it out 1/2 to 3/4 turn. Repeat for the other screw. I think there's an accelerator pump adjustment too... the rod can seat into one of two different holes. You might try the other hole, see if it improves your off-idle response/performance

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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Moneymaker
Administrator

Posts: 19964
From: Lyons, IL, USA
Registered: May 99

posted 12-22-2002 12:45 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
How to adjust a Jimmy Carter carb for best results by Alex:

1) Remove carb
2) Throw it as far as you can, or launch it with a catapult, or, mount on garage wall as a target for pistol shooting practice.
3) Replace with Holley or Autolite 4100 of
your choice.
4)Enjoy trouble free high performance driving

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

[This message has been edited by Moneymaker (edited 12-22-2002).]

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rm302 boss
Moderator

Posts: 649
From: Austin Texas
Registered: Dec 2002

posted 12-22-2002 09:21 AM     Click Here to See the Profile for rm302 boss   Click Here to Email rm302 boss     Edit/Delete Message   Reply w/Quote
Are there jet's (like in a Holley) that you can up size and down size on these? I have a freind that has one on a Cobra kit car that is way over fueled... I can not get it to lean out. i had to kick the timming up just to keep it from loading up. the best i can get on the vac guage is 15".... thats sad... I can get at least 21 on my boss at 600 rpm with a holley.
Rene

[This message has been edited by rm302 boss (edited 12-22-2002).]

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V8 Thumper
Gearhead

Posts: 3603
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 12-22-2002 10:02 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
They too have screw in jets for big changes; smaller changes can be made by swapping metering rods and step-up springs

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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66bluefb
Gearhead

Posts: 467
From: Okla.City,Okla.
Registered: May 2002

posted 12-22-2002 11:08 AM     Click Here to See the Profile for 66bluefb   Click Here to Email 66bluefb     Edit/Delete Message   Reply w/Quote
Hey Alex, Is Jimmy Carter carbs. in the same category as Billy beer?

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Moneymaker
Administrator

Posts: 19964
From: Lyons, IL, USA
Registered: May 99

posted 12-22-2002 11:27 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Yes, they both let you down and make you want to puke.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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rm302 boss
Moderator

Posts: 649
From: Austin Texas
Registered: Dec 2002

posted 12-22-2002 09:35 PM     Click Here to See the Profile for rm302 boss   Click Here to Email rm302 boss     Edit/Delete Message   Reply w/Quote
Lol lol...

Rene

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Fastymz
Moderator

Posts: 12673
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 12-24-2002 05:25 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Tony I used a carter 625 for over 4 years.It never ran right no matter what I did.
I leaned the choke all the way.And that seemed to help my carb.
When I put the used a Holley 600cfm on.My car runs better then ever gets better gas milage,and runs stronger.

SCOOP

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oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

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