WO CARBURETOR HEADS UP

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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Ben Dover
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WO CARBURETOR HEADS UP

Post by Ben Dover » Wed Dec 05, 2018 3:34 pm

Take a good look when buying those hard to find WO Carter WWII JEEP Carburetors, not all of them are made for JEEP, The Carter WO Carburers made for the PE-95 will not work on a JEEP. The bore of the throttle body is much too small among other differences that make its' components unuseable on Jeep It is made to run either at idle or governed 1800 PE-95 RPM. I can remember when these were offered NOS by the hundreds thru DRMO 50 years ago and bought unseen by dealers only to discover the error the hard way.
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Scoutpilot
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Re: WO CARBURETOR HEADS UP

Post by Scoutpilot » Thu Dec 06, 2018 4:25 am

What he said. What I say...When in doubt, ask someone. Pride can be an expensive waste.
'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: WO CARBURETOR HEADS UP

Post by Wolfman » Thu Dec 06, 2018 7:33 am

Interesting. Would one of these PE-95 carbs happen to have an idle and a full throttle stop screw ??
That is what is on my CJ. I bought the jeep and eventually plan to restore it, but it is "my project" and my stuff is always last thing in the shop.
One thing I noticed was the additional "High Speed stop screw". I drive the jeep around the farm and up & down the runway and I have noticed a lack of high speed power. Runs great up to about 35 MPH. Won't do 40. My nephew can out run me on his 4 wheeler. :evil:
Now you have me wondering ??
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Ben Dover
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Re: WO CARBURETOR HEADS UP

Post by Ben Dover » Thu Dec 06, 2018 8:48 am

I don't have a PE-95 Carburetor here to go by, but the PE-95 Intake manifold bore is also a lot smaller than the A-1166 for the JEEP and the throat of the throtle body is about the size of a Quarter which is much smaller than the JEEP version.
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tamnalan
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Re: WO CARBURETOR HEADS UP

Post by tamnalan » Thu Dec 06, 2018 10:09 am

So would a PE95 carburetor come with a "407" stamped throttle body?

In other words, do "407" throttle bodies come with different venturi diameters? :shock:
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Ben Dover
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Re: WO CARBURETOR HEADS UP

Post by Ben Dover » Thu Dec 06, 2018 10:11 am

Different diameter, different number. The range of the throttle control is different as it is controlled by the Governor.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Re: WO CARBURETOR HEADS UP

Post by Adam » Thu Dec 06, 2018 10:30 am

Soooooo, get the genset carb, change the base to a 407 or a 6xx base with the correct bore, rejet the whole carb. You will end up with a ww2 float bowl with the correct patent numbers. correct float bowl top with the circle c and no other numbers, take the airhorn, pull out the goofy choke parts, and replace them with a post war shaft and ww2 or civi cable clamp assembly. The link from base to acc pump might be the right one with the cap and spring for a shaft lock. What did I miss?



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Ben Dover
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Re: WO CARBURETOR HEADS UP

Post by Ben Dover » Thu Dec 06, 2018 11:01 am

Believe PRE-95 is a 567S or 572S Carburetor. Throttle Body is 427 with 3/4 Bore.
539S has a 1" Bore. What did Adam miss? Good question. At least many of you will be aware that the PE-95 Carburetor is very different.
Good job, Adam. :wink: :wink:
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
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Re: WO CARBURETOR HEADS UP

Post by Chuck Lutz » Thu Dec 06, 2018 11:10 am

The correct flange is 407...any other number isn't correct for a G503 in WWII. The 505 is for a WO 636 which is a CJ carb. I think Scoutpilot can comment on the internals, that's above my pay grade as have only sought out 100% correct WO 539s carbs or ones with enough of the CORRECT parts at a reasonable price to use to make up a correct 539 from a jumble of carbs with mixed up parts I had accumulated over the years until he started doing his high-quality rebuilds. I still have some parts left over from all the carbs I had awhile ago that Scoutpilot rebuilt for me. Unfortunately most of the left overs are not correct for a 539.

Carter parts charts do not indicate a part number for the BOWL, which means it was not available for a replacement. The flanges ended up with worn-out, leaking throttle shaft bores so over the years carbs for the G503 and some CJs were rebuilt using the same method....use what ya got. They were so interchangable for the most part that this method sufficed.
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Scoutpilot
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Re: WO CARBURETOR HEADS UP

Post by Scoutpilot » Thu Dec 06, 2018 11:56 am

correct float bowl top with the circle c and no other numbers
Only if has the rounded tower and two vent holes on the face.

With that in mind, pictures of what you are starting with would be helpful.
'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

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Re: WO CARBURETOR HEADS UP

Post by Ben Dover » Thu Dec 06, 2018 1:06 pm

Looky, they are all coming out of the woodwork, thanks.

I did this on the run and did not have time to check any other manuals other than TM9-1826A ORDNANCE MAINTENANCE Carburetors (CARTER) December 1952.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO

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