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Old 11-04-2018, 06:39 PM   #1
Digger
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Default Stock ‘34, what length fuel rod?

I think I have a too long fuel rod at the carb. It measures about 10.5” , seems like its hitting the firewall. What is the correct length? Thanks
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Old 11-04-2018, 07:27 PM   #2
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Default Re: Stock ‘34, what length fuel rod?

What's a fuel; rod ?
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Old 11-04-2018, 07:28 PM   #3
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Default Re: Stock ‘34, what length fuel rod?

Overall length 16 1/2 inches. Sorry, I thought you were referring to the dipstick. Unique to '33's and '34's

Last edited by fourfords; 11-05-2018 at 11:03 PM.
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Old 11-04-2018, 07:38 PM   #4
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Default Re: Stock ‘34, what length fuel rod?

Not sure of the official name, circled in red in the photo
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Old 11-04-2018, 07:47 PM   #5
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Default Re: Stock ‘34, what length fuel rod?

I am guessing you mean the carb throttle rod which goes back to the foot throttle linkage near the firewall. Part No.40-9747 which is 9.45 " between the outer edge of each hole of the spring loaded rod ends. Your 10.5"inch rod is one inch too long for a 34 Ford V8. Regards, Kevin.
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Old 11-04-2018, 07:54 PM   #6
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Default Re: Stock ‘34, what length fuel rod?

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Great, thanks so much Kevin, I will order the correct one tomorrow!
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Old 11-04-2018, 09:39 PM   #7
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Default Re: Stock ‘34, what length fuel rod?

Digger you won't find one no one makes them I had to cut mine and weld in back together to get the correct length.
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Old 11-04-2018, 09:48 PM   #8
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Default Re: Stock ‘34, what length fuel rod?

Digger, the throttle rod on my 34’ roadster measures 10.5” length as shown in your picture. Measured from left end of spring cap to the knob of the throttle plate that goes inside the right spring cap.

I’m sure you understand the adjustments to be made on the carb to have a short or long stroke gas pedal for throttle response and the stop screw for idle adjustment.

Good luck!
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Old 11-04-2018, 09:58 PM   #9
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Default Re: Stock ‘34, what length fuel rod?

Ok, will fool around with all of it, just started working on the car this week
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Old 11-04-2018, 10:09 PM   #10
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Default Stock ‘34, what length fuel rod?

Very nice roadster. Let me know how it goes.

I’ve had to troubleshoot the fuel system for the last month.

[EDIT]: the carburetor on my 34’ is a Ford Holley 94 not a Stromberg like in your photo. Kevin may be correct. I would refrain from modifying the rod unless necessary. With the gas pedal completely depressed I have 0.5inches from the cowl and my throttle plate linkage is set in the center hole.

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Old 11-04-2018, 10:45 PM   #11
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Default Re: Stock ‘34, what length fuel rod?

I can assure that the 9.45"length of the throttle rod 40-9747 (not total length, but length measured from outer edge of holes in rod ends) for an all original 34 Ford V8 is from the original ford drawing and is correct. I checked my all original 34 sedan and it is as above. Of course a change in carburetor away from a stromberg 40, 48, or even a 97 will mean a different length rod might be required. Position of engine or body mounting on chassis will also effect this. And yes a NOS rod might be hard to find these days. The 10.5"rod fits an original 1935 or 36 Ford. Regards, Kevin.
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Old 11-04-2018, 10:56 PM   #12
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Default Re: Stock ‘34, what length fuel rod?

Thanks Kevin. Strange that with hundreds of thousands of 34 Fords made, and the need of the part in modern times that it would hard to come by. And with the millions of repop parts made, why not this one?
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Old 11-04-2018, 10:58 PM   #13
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Default Re: Stock ‘34, what length fuel rod?

And BTW the carb is a 48, and engine/trans is original to the car.
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Old 11-04-2018, 11:47 PM   #14
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Default Re: Stock ‘34, what length fuel rod?

Also interesting to observe that most 1932, 33 and 34 fords have been modified or hot rodded in some form and therefore many original little parts are not required any more. Such a pity because the original factory designs are so good an pretty but there is always someone around who recons he can improve on that !!! Try barnfind08 on here for that rod. Your roadster looks very nice. Regards, Kevin.
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Old 11-05-2018, 08:41 AM   #15
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Default Re: Stock ‘34, what length fuel rod?

Kevin,
Maybe you could elaborate on this or discredit it, but some folks I had talked to said it was very common for 34’ owners to replace their Strombergs carburetor with a Holley 94 starting in 38’. It was an overall better design compared to the Stromberg in the area of power enrichment (valve at the bottom of the fuel bowl) giving better efficiency at higher rpms. Holley ended up using this type of carb for 20 years until it was changed out in 58’.

I’m too young to know when my grandfather changed out the carb to a Holley 94 but the throttle linkage knob (as shown on the dash) does not have a knob to connect to on this Holley 94 so no cruise control.
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Old 11-05-2018, 08:57 AM   #16
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Default Re: Stock ‘34, what length fuel rod?

Judging from the photo of Digger's engine compartment, it appears that he is trying to maintain originality. Changing carburetors just to accommodate a reproduction throttle rod and/or achieve a marginal performance increase would seem a bit off target in this instance.
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Old 11-05-2018, 08:32 PM   #17
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Default Re: Stock ‘34, what length fuel rod?

dbtenner, There were a number of different manufacturers of the 94 design carburetor. Some were fitted with the small hand throttle lever on the throttle butterfly shaft and some were not. Some dont even have the throttle shaft protruding through the carb body to be able to fit the hand throttle lever. I have used a Holly 2100 carb at one stage (it had the hand throttle lever) on one of my 34s and it was ok but no better than a properly rebuilt Stromberg 48 type . Your 34 roadster if fitted with its original 21 stud engine which has the water pumps mounted on the front of the alloy cylinder heads should be fitted with a stromberg 40 or 48 carburetor. The 94 type carbs were a common replacement for the 48 type carbs back in the 1950s because they were cheaper to buy new than rebuild the original carbs. Regards, Kevin.
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Old 11-06-2018, 04:37 AM   #18
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Default Re: Stock ‘34, what length fuel rod?

You can shorten the one you have by putting a Z kink in it. (bending it). Shorten it by the above method to the length described and if it seems to work you know what length you need to find, or modify one to suit.
The dimension seems a bit wishy washy to me, how can you dimension something to the outer edge of a hole when the end is spring loaded?

My 33 has one with a Z bend in it, on my 41 pu I made a brass threaded adjuster and used that to fine tune the length.

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Old 11-06-2018, 09:17 AM   #19
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Default Re: Stock ‘34, what length fuel rod?

I have those nos.
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Old 11-06-2018, 08:53 PM   #20
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Default Re: Stock ‘34, what length fuel rod?

Turns out my friend says he can make one for me, any length. So I will report back.
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