Carb Adjust Question

Contenderizer

Contenderizer

Junior Member
I was not happy with the top speed of a recently purchased Tudor, so I started going over the engine hoping to find something obvious. In doing so I discovered that the throttle linkage (between the carb and the firewall) was bent to the point that the carburetor was only opening about 3/4 of the way. In other words, it was bent to the point that it wouldn't push the throttle butterfly fully open even if the gas pedal was pushed to the floor. After straightening the rod, the engine comes up to speed just fine, but of course, it now wants to idle too fast as the linkage is holding the throttle plate open slightly.

What am I missing here? Is there an adjustment somewhere that I don't see?
 
Does this help you....you can see the idle adjustment screw
 

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If the idle screw doesn't correct the problem you will need to bend it again. in other words, if at first you don't suceed, try try again.
 
Do you have a 2 tooth steering, or a 7 tooth steering?
The column for the 2 tooth is clamped to the steering box, so the clamp can be loosened and the steering column can be rotated some, which will also adjust the spark and throttle rods. If you had a good idle before bending the linkage, maybe you overcorrected, and need to bend it back a hair.

On my 29 Tudor the linkage was binding just a little at idle, so it wouldn't come back to a slow idle. One of the two uprights supporting the cross linkage was bent just enough to hold the throttle a bit open.
 
Tom, I have a 2 tooth box. I'll look at what you suggest, but I guess if worse comes to worse, I'll have to sacrifice a fully opening throttle for a proper idle speed.

Thanks
 
You should be able to adjust the linkage for slow idle and full open. Make sure the rod going through the floorboard isn't binding. They sometimes get bent when working on the car.
 
Let's not make this too complicated! Take the carb throttle control rod end that's attached to the accelerator assembly (on top of the bell housing) off, and bend the accelerator assembly arm (that points down) slightly forward or back as needed. No tools required, repaired in less than a minute!
 
Just to add to other comments, The throttle lever on the carburetor sometimes needs to be bent. If you go that route , use two pair of pliers, one pair to brace the lever so as not to pull the lever off the throttle shaft and the other pair to bend the lever. Really NO big deal.
 
Sounds like my daddy worked on that linkage .

He said 35 was fast enough , the way you look at girls while driving .
 
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