where to get a carb

Nov. 18, 1941 - MB100001 thru Mar. 6, 1942 - MB125809 NO EBAY or COMMERCIAL SALES.
rustfarm
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where to get a carb

Post by rustfarm » Fri Jul 21, 2006 2:38 pm

I need a carb for both my jeeps.
The 12-4-41 needs a rare carb I am told, but the 12-24-41, I am not sure what type it needs.
On the 12-24-41 I would settle for a regular war time carb. Any one know where to get a regular wartime production NOS or rebuilt or nice take off carb?

Anyone know where to get the hard to find early carb that My 12-4-41 should have?

Please PM me if you have a sorce.
Thanks,
Brennon
MB 12-4-41
MB 12-24-41

PS Still looking for an early bell housing, and early 12-1941 transmission case


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Sean
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Post by Sean » Fri Jul 21, 2006 10:44 pm

Brennon wrote:I need a carb for both my jeeps.
The 12-4-41 needs a rare carb I am told, but the 12-24-41, I am not sure what type it needs.


Both carbs you need are the same model....539S. The so called rare one is simply a 539S with the MA throttle plate as pictured below. If you are any good at metal fabrication you can make a MA style plate and peen it onto the throttle shaft.

Image
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carb

Post by rustfarm » Sat Jul 22, 2006 10:46 am

Okay, so where do I get one of these carbs?
If they are impossible to find, I would settle for a regular war time carb.(what ever that is called)

I currently have no carb on one of my jeeps and the other jeep has a postwar carter carb I have been told.
So, I am not really sure what I should be looking for, even if I choose to get a regular war time carb for now.
Anyone have a photo of a regular war time carb?

Thanks,
Brennon
MB 12-4-41
MB12-24-41

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Todd Paisley
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Post by Todd Paisley » Sat Jul 22, 2006 3:00 pm

The plate Sean is talking about was used on the Willys Model 440 carb (which was a Carter 450S). I snagged a nice one on eBay a month ago. Here is the Carter 450S:

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I hope to cannibalize this one to use the parts to make the early MB one from a regular 539S.
Todd Paisley

1941 MB - 100063 - X12? - Willys Factory Test Mule
1942 MB - 123136 - Earliest Documented "Civilian" Test Jeep
1944 CJ2-12 - X36
1944 CJ2-16 - X40
1945 CJ2-37 - X61
1945 CJ2A-10012

Wanted: serial # for GPW with hood # 2058856.

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Sean
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Post by Sean » Sat Jul 22, 2006 5:18 pm

Brennon wrote:Okay, so where do I get one of these carbs?
If they are impossible to find, I would settle for a regular war time carb.(what ever that is called)
Brennon, the regular wartime carb is the 539S (see three pictured below) You can convert one to the early Slat carb by changing the throttle plate and shaft to the MA one as Todd is doing or make one yourself.
Todd wrote:The plate Sean is talking about was used on the Willys Model 440 carb (which was a Carter 450S). I snagged a nice one on eBay a month ago. Here is the Carter 450S:
Nice score Todd. I had some regular 539S throttle plates lasercut out and bent up by a sheet metal shop and drilled and tapped for the screws. I then had a machine shop lathe up the shafts to rebuild the carbs pictured below.

Maybe you could look into having the throttle plate and shaft off the 450S copied and a few made up to help out the other guys with early slat grills. I had ten 539S ones done and they cost me around $30 ea. I peened the plates onto the shafts myself.

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Chris Fourroux
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Post by Chris Fourroux » Sat Jul 22, 2006 8:43 pm

Pardon me, but I don't believe the throttle shaft assembly from a 450S was used on early 539S carbs.

Here is an excerpt from Carter Carburetor Corporation's Form 4638D
"U.S. ARMY TRUCK - 539S"
"February, 1942"
"Reprinted September, 1943"
This document is included in it's entireity in "All American Wonder Volume I"

Image

As you can see throttle assembly , part 3-463S, which was used on the first 4000 539S carbs,
resembles part 3-465S , which was used on 539S after the first 4000,a lot more than it does part 3-359S which was used on the the 450S carb.
you can see the parts list for a 450S here.
http://www.old-carburetors.com/Willys/p ... ys-016.htm

The other difference in the early Slat Grill carb was the throttle cable clip. part 62-131S. the 450S carb used part 62-110S but I suspect with a small amount of modification it could be used successfuly.
Chris Fourroux

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Post by Sean » Sun Jul 23, 2006 1:30 am

Chris wrote:Pardon me, but I don't believe the throttle shaft assembly from a 450S was used on early 539S carbs.


Image You are right Chris. I had a brain block and totally forgot about that info in AAW1. I actually modified a standard plate years ago for my Slat and thought how easy it was to do after reading that in AAW1. It is simply a matter of cutting part of the arm off and rounding it up. I still need to make a correct throttle clip for it.

The Carb I posted as the slat one was sold on Ebay years ago by Darcy Miller as a slat carb and for some reason I keep referring to it.... :oops: and that MA throttle plate. It's one of those things that just sticks in your head even though it's incorrect.

Thanks for the correction and jogging my failing memory... :shock:
Sean Elliott
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Todd Paisley
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Post by Todd Paisley » Sun Jul 23, 2006 8:00 am

Hi Chris. You are right as far as this reference is concerned. I posted a few months ago on the early carb and a couple people said it used 450S parts. I haven't done anything with it yet so I haven't run into the real truth.

http://www.g503.com/forums/viewtopic.php?t=37041

I know a guy who son has laser cutting business. If someone can lend me the specific parts, I can have them reproduced.
Todd Paisley

1941 MB - 100063 - X12? - Willys Factory Test Mule
1942 MB - 123136 - Earliest Documented "Civilian" Test Jeep
1944 CJ2-12 - X36
1944 CJ2-16 - X40
1945 CJ2-37 - X61
1945 CJ2A-10012

Wanted: serial # for GPW with hood # 2058856.

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carb

Post by rustfarm » Wed Jul 26, 2006 2:11 pm

Okay guys,
So, where can I get a 539S to start with. I have called several suppliers and most have imported carbs or have postwar carbs or have carbs but the supplier doesnt know the differences and cant say that it is or isnt a war time carb.

It is hard for me to tell what I am looking at. If I look at a photo on ebay, I still have a problem telling the difference.
If I order from a supplier, I have to rely on them to know the difference.
So, Does anyone have a 539S for sale or know where I can get a rebuilt one? I can start with that and them modify it to be correct for my slatgill.

Thanks again,
Brennon

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Post by geoff bull » Wed Jul 26, 2006 3:00 pm

Hi Chris,
There appears to be one other part that is different that being the body flange,early are shown as 1-408S whereas later are shown as 1-412S any idea what may be the difference between those ?

Geoff
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42 slat # 115116
42 slat # 113424
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Post by Chris Fourroux » Wed Jul 26, 2006 6:02 pm

I'm pretty sure after reading through a bunch of Carter parts lists that part 1-408S is the assembly part number for the throttle body with the throttle lever and shaft 3-463S installed.
1-412S is the assembly part number for throttle body with 3-465S installed.
Chris Fourroux

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Post by geoff bull » Thu Jul 27, 2006 4:19 am

Hi Chris,
Thanks for going to the trouble in checking that out.

Geoff
46 CJ2a #54088
42 slat # 115116
42 slat # 113424
41 WC16

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Re: where to get a carb

Post by Chuck Lutz » Tue Jul 04, 2017 9:16 am

I looked at the post war releases from Carter as well....and the difference between the one with a ribbed air horn and a smooth air horn top seemed to indicate the civilian one had the ribs and the military (MA) did not. I also noted that the throttle shafts are different....

Then I looked at the Todd Paisley post about the carb he found....ribbed air horn all right, but his flange had the throttle linkage as shown in the photo of the MA example in the Carter manual. So, the question out there is still unanswered: Was there a transition from the ribbed civilian carb to the smooth style as seen in the Carter sheet? Am I the only one who noted that these are updates from Carter I believe from 1953 and should we put 100% of our faith in reprinted/reissued spec sheets?

As I posted, even the MA TM shows drawings of BOTH styles of the air horn, ribbed and smooth.

So...I am not sure we have nailed down this just yet....we have several bits of information that seem at odds with other bits of information so which do we trust or do we need more info before confirming which air horn to use exclusively on an MA Carter carb?
Chuck Lutz

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Re: where to get a carb

Post by wo2jeeper » Tue Jul 04, 2017 12:16 pm

Chuck Lutz wrote:I looked at the post war releases from Carter as well....and the difference between the one with a ribbed air horn and a smooth air horn top seemed to indicate the civilian one had the ribs and the military (MA) did not. I also noted that the throttle shafts are different....

Then I looked at the Todd Paisley post about the carb he found....ribbed air horn all right, but his flange had the throttle linkage as shown in the photo of the MA example in the Carter manual. So, the question out there is still unanswered: Was there a transition from the ribbed civilian carb to the smooth style as seen in the Carter sheet? Am I the only one who noted that these are updates from Carter I believe from 1953 and should we put 100% of our faith in reprinted/reissued spec sheets?

As I posted, even the MA TM shows drawings of BOTH styles of the air horn, ribbed and smooth.

So...I am not sure we have nailed down this just yet....we have several bits of information that seem at odds with other bits of information so which do we trust or do we need more info before confirming which air horn to use exclusively on an MA Carter carb?
Chuck, can you post the pics from the TM you discuss. Could explain more. But when the tm was made some parts pics could also be taken from civillian parts of course.

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Re: where to get a carb

Post by wo2jeeper » Tue Jul 04, 2017 12:19 pm

Todd Paisley wrote:Hi Chris. You are right as far as this reference is concerned. I posted a few months ago on the early carb and a couple people said it used 450S parts. I haven't done anything with it yet so I haven't run into the real truth.

http://www.g503.com/forums/viewtopic.php?t=37041

I know a guy who son has laser cutting business. If someone can lend me the specific parts, I can have them reproduced.
have the parts


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