NOW WITH PICS - more than 1" travel on accelerator?

[amc78cj7]

We are putting the '68 back together and there doesn't seem to be a lot of travel for the accelerator. Only 1.5". Is this normal? Throttle linkage is connected to the Edelbrock carb now; and the throttle link rod between the firewall pivot bracket and the carb has been adjusted so it is as short as possible. A local guy said there should be an adjustment on the inside of the cab, but it looks like that linkage rod is 1-piece non-adjustable both in my setup as well as those available from Toms, Wild Horse, etc.

Updated post with pics:

Pic 1: 1.5" travel from coast to full throttle

Pic 2: another shot of the accelerator pedal at coast

Pic 3: Throttle linkage rod connected to carb

 

[thegreatjustino]

The adjustment is in the rods for the linkage. Brake and clutch are a completely different assembly and wouldn't affect the accelerator.

 

[amc78cj7]

The adjustment is in the rods for the linkage. Brake and clutch are a completely different assembly and wouldn't affect the accelerator.

That makes sense, except that I don't have the carb on the motor yet so the linkage isn't connected to anything. ???

 

[thegreatjustino]

Must be hitting something in the engine bay or something on the floor under the pedal.

Without anything holding the linkage in the engine bay, the pedal should be on the floor. You should be able to reach down and lift the pedal off the floor by two to three inches.



Another thought, do you have the original secondary linkage on the intake by any chance?

 

[amc78cj7]

Now updated with pics. Carb is re-installed and we still only have 1.5" of travel from full coast to full throttle. Is this normal? Could someone post a pic of their accelerator pedal so I know what I am shooting for? All I can think to do is fabricate a custom shorter linkage from the pedal to the firewall pivot point.

 

[.94 OR]

How close is the linkage mounted to the butterfly shaft? If too close, this could account for a very quick throttle. If you have a longer lever on your carb, can you mount your linkage farther away from the butterfly shaft?

 

[jckkys]

The end of the linkage rod that snaps on the carb's ball stud is threaded onto the small diameter part. That's where the adjustment is. That rod was used on many Ford cars and trucks in the late '60s-mid '80s. Some were longer some shorter. They have about 1.5" of adjustment in them.

 

[suckerpunched]

Is it getting full throttle at the carb or is the pedal hitting the floor first?

 

[tirewater]

The end of the linkage rod that snaps on the carb's ball stud is threaded onto the small diameter part. That's where the adjustment is. That rod was used on many Ford cars and trucks in the late '60s-mid '80s. Some were longer some shorter. They have about 1.5" of adjustment in them.

This.

From the pictures it looks like the OP's is screwed all the way in.

 

[thegreatjustino]

Take off the linkage to the carb. Manually push the linkage on the firewall toward the firewall. If the linkage rod to the carb won't reach the linkage on the firewall when you're manually holding it toward the firewall, you need a longer linkage rod from the firewall part to the carb.

As was said, Ford used these on millions of cars and they came in varying lengths. Get a longer one if you need it. Should fix you right up.

 

[amc78cj7]

Take off the linkage to the carb. Manually push the linkage on the firewall toward the firewall. If the linkage rod to the carb won't reach the linkage on the firewall when you're manually holding it toward the firewall, you need a longer linkage rod from the firewall part to the carb.

As was said, Ford used these on millions of cars and they came in varying lengths. Get a longer one if you need it. Should fix you right up.

If you shorten the carburetor link rod as I have, it will pull the accelerator bell crank toward the front of the vehicle. This in turn will pull the pedal link rod toward the front of the vehicle. As the pedal link rod is mounted above the pivot point on the pedal, this should cause the pedal to pivot further off the floor. It seems than lengthening the carburetor link rod would have the opposite effect of my goal. Right now there is only ~1cm of thread still showing on the carburetor link rod so it is pretty short.

 

[thegreatjustino]

I might be backwards as I was typing from memory. Regardless, remove the link from the carb, manually push the accelerator to its highest point or close to it. This is where it should be at idle. Get a rod the correct length to connect to the carb.

 

[amc78cj7]

I might be backwards as I was typing from memory. Regardless, remove the link from the carb, manually push the accelerator to its highest point or close to it. This is where it should be at idle. Get a rod the correct length to connect to the carb.

Thanks, this is exactly what I needed. I wasn't sure what the correct height was so I will do as you suggest and just make my own link rod.