RE: [Chrysler300] Modifying 1957 300C WCFB carburetors

["John L. Chesnutt" <chesnutt@xxxxxxxxxxxx>]

Hi Larry Jabin & Ray Melton,

Listed below are the metering rods for 1957 300C WCFB as listed Dec.15, 2008 by me.

Metering rods are three step are for 1957 300C. I have listed the diameter of the rods, as Economy, Mid and Wide open.

1 lean -      #75-1180, .077,  .068,  .052
58 Standard   #75-1160, .076,  .066,  .048
Original - 57 #75-1263, .075,  .065,  .042
2 lean        #75-1181, .078,  .070,  .055

My carbs were modified in 1957 by the original owner. I use the 1 lean rods.
Technical Bulletin #364 dated 7/18/57.  The change involves installing (4)
metering rods #75-1160.

E.P. Carr of Chrysler Car Engineering wrote to the former owner of our 1957 300C on April 8, 1958 "Fuel economy at 4,000 feet could be improved by using our Altitude Package which contains one size leaner metering rods No. 75-1180"

John Chesnutt


-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Ray Melton
Sent: Monday, November 05, 2012 4:25 PM
To: 'Larry Jabin'; 'George McKovich'
Cc: chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] Modifying 1957 WCFB carburetors

Regarding the modifications outlined in the Factory Service Bulletins, you will also note that in addition to drilling some new holes and enlarging some passages,  they specify changing to new metering rods in both carburetors and different secondary jets in the front carburetor, none of which are available any more.  However, since I am planning on having those modifications made to the WCFB’s on my 300C, I have searched for quite a while and finally found a source for the elusive parts.  John Hardgrove at The Carburetor Shop in Eldon, MO  (573-392-7378) will make the new rods for you on the original machines purchased from Carter when they went out of business in the ‘70’s.  These unique, totally manual machines from the 1940’s can hold precision tolerances down to 0.00005”   (five hundred-thousandths of an inch – about one hundredth the diameter of a typical human hair!)    However, that kind of precision machining does not come cheaply:  the rods cost $320/set of four  and you must also purchase their WCFB rebuild kit @  $154 for two carburetors.  The new secondary jets are a paltry $15/pair.  So, I’m looking at $489 + $14 shipping just for the parts for the rebuild, PLUS  the labor for the restoration itself!  This is likely to be a ~$1100 job!

 

The best part about having these new metering rods custom-made is that John has all the original Carter part numbers and specs as well as the Carter-original tiny brass billets, so he can also make the new metering rods in the standard configuration as well as three more stages of “lean” to adjust for high-altitude operation.  John Chesnutt wrote on December 15, 2008 listing the Carter P/N’s for these different metering rods.  I can forward that message to any interested member if you are unable to locate it yourself.

 

Ray Melton

Las Cruces, NM

1957 Chrysler 300C convertible    

White/Gauguin    S/N 3N572517

 

From: Larry Jabin [mailto:larry@xxxxxxxxxx]
Sent: Monday, November 05, 2012 2:34 PM
To: Ray Melton
Subject: RE: [Chrysler300] Carbs ?s for 1958 Chrysler 300D

 

Thanks Ray 

 

Larry Jabin

 

P.W. Bellingall, Inc.

500 Sansome Street

Suite 501

San Francisco CA 94111

 

Tel: 415-781-8640

Fax: 415-781-0155

 

Larry@xxxxxxxxxx 

 

From: Ray Melton [mailto:rfmelton@xxxxxxx]
Sent: Monday, November 05, 2012 1:08 PM
To: 'George McKovich'; Larry Jabin
Cc: chrysler300@xxxxxxxxxxxxxxx
Subject: RE: [Chrysler300] Carbs ?s for 1958 Chrysler 300D

 

There was an additional Chrysler Service Bulletin No. 1034-CH issued October 16, 1957 to correct a misprint  in Service Bulletin No. 1028-CH (August 30, 1957).  That misprint affected the dimensions of the modification to the carburetors; to wit:

 

Quote:  “Please note on Page 2 of Service Bulletin No. 1028-CH in Figure 1, under the drawing of the “Air Horn” the Primary side should be 11/16 inch and the Secondary side should be 13/16.”    (The drawing in #1028 had these dimensions reversed)

 

Ray Melton

 

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of George McKovich
Sent: Monday, November 05, 2012 10:59 AM
To: Larry Jabin
Cc: Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Carbs ?s for 1958 Chrysler 300D

 

  

Larry
There was a fix issued in July 57 but I thought the 58's would have had that already done. I can send you a copy of it this evening.

George

On Nov 5, 2012, at 9:10 AM, Larry Jabin <larry@xxxxxxxxxx <mailto:larry%40pwbsfo.com> > wrote:

> 
> When taking off from a stop light at an intersection where I have to 
> make a left turn
> 
> If I take off quickly the car stumbles so I guess the fuel is moving 
> in the bowl to the right side of the carb
> 
> I thought I read somewhere on the list server for a fix for this, but 
> can't seem to find it
> 
> Has anybody else experienced this & know of a fix?
> 
> Thanks
> 
> Larry Jabin
> 
> [Non-text portions of this message have been removed]
> 
> 

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]



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