Carter 539s

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Peller
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Carter 539s

Post by Peller » Sun Feb 18, 2018 2:02 am



"Hi Jeepers ! 
I have here a Carter carb which is a mix of several models. The flange 
and cover are from a 539S but I have a doubt about the bowl which has an 
idle screw, see picture. What do you think ?" 



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Peller
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Re: Carter 539s

Post by Peller » Sun Feb 18, 2018 2:06 am

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Scoutpilot
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Re: Carter 539s

Post by Scoutpilot » Sun Feb 18, 2018 2:38 am

1. The Choke Housing is standard Post-war Carter. Typically, WO636SA.
2. The Bowl Cover is from a 539S.
3. The Bowl/Main Body is from a WO831S. Foreign export only.
4. The Flange is a 407 from a 539.
'70-'71 'A' Batt., 377th FA, 101AB
(Slicks and LOH's)(Col's LOH Pilot)
'71-72 CHARLIE TROOP,
16TH AIR CAV, 1ST AVN BDE (AEROSCOUTS)
LOW LEVEL HELL.
'46 CJ2A
'47 CJ2A
'48 CJ2A
'48 B1PW126
'69 CJ5

Wolfman
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Re: Carter 539s

Post by Wolfman » Sun Feb 18, 2018 5:59 am

Don't recall ever seeing an adjusting screw on the side of a WO carb. bowl.
I know what my first guess would be, but
What does it adjust ??
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB

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Scoutpilot
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Re: Carter 539s

Post by Scoutpilot » Sun Feb 18, 2018 6:41 am

It is a secondary mixture control. It was for foreign export only. I have a couple of worn out units. I hope to find more as I believe they might be useful at elevations above 5K MSL.
'70-'71 'A' Batt., 377th FA, 101AB
(Slicks and LOH's)(Col's LOH Pilot)
'71-72 CHARLIE TROOP,
16TH AIR CAV, 1ST AVN BDE (AEROSCOUTS)
LOW LEVEL HELL.
'46 CJ2A
'47 CJ2A
'48 CJ2A
'48 B1PW126
'69 CJ5

Wolfman
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Posts: 6863
Joined: Sat Jan 12, 2008 5:25 am
Location: Tipton,In.

Re: Carter 539s

Post by Wolfman » Mon Feb 19, 2018 4:50 am

Still a little fuzzy around the edges, S.P.
Secondary to me means another venturi, like the secondary on a four barrel carb.
WO has an idle and a main jet circuit, with one throat and venturi so, ( here comes that word ), I assume the extra adjustment screw works in conjunction with the main jet circuit ??
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB

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Scoutpilot
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Re: Carter 539s

Post by Scoutpilot » Mon Feb 19, 2018 4:56 am

Yes. The second mixture adjustment does directly affect the fuel flow through the metering rod jet.
'70-'71 'A' Batt., 377th FA, 101AB
(Slicks and LOH's)(Col's LOH Pilot)
'71-72 CHARLIE TROOP,
16TH AIR CAV, 1ST AVN BDE (AEROSCOUTS)
LOW LEVEL HELL.
'46 CJ2A
'47 CJ2A
'48 CJ2A
'48 B1PW126
'69 CJ5

Wolfman
G-Lieutenant General
G-Lieutenant General
Posts: 6863
Joined: Sat Jan 12, 2008 5:25 am
Location: Tipton,In.

Re: Carter 539s

Post by Wolfman » Mon Feb 19, 2018 5:03 am

Got it !
Thanks !!
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB


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