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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Very stiff clutch

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Old Sep 27, 2024 | 09:05 AM
  #1  
Terry Emrick's Avatar
Terry Emrick
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Very stiff clutch

1955F 100 with extremely stiff clutch. FE 390 connected to four-speed Toploader using stock linkage with a Center Force clutch and pressure plate. Can anyone help with a fix for this? Thank you!
 
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Old Sep 27, 2024 | 09:34 AM
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55Pickup390
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From: Warwick, Rhode Island
I'm using a modified stock clutch linkage with a 390 and a Borg Warmer T-10 4-speed and had a similar problem.
I moved the Clutch Adjusting Rod connection point closer to the clutch Pivot Bracket pivot point to gain more leverage on the clutch.
It's a balance between using less force and being sure to have enough movement of the clutch for both engagement and disengagement.
 
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Old Sep 27, 2024 | 06:51 PM
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Terry Emrick's Avatar
Terry Emrick
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Originally Posted by 55Pickup390
I'm using a modified stock clutch linkage with a 390 and a Borg Warmer T-10 4-speed and had a similar problem.
I moved the Clutch Adjusting Rod connection point closer to the clutch Pivot Bracket pivot point to gain more leverage on the clutch.
It's a balance between using less force and being sure to have enough movement of the clutch for both engagement and disengagement.
Thank you very much for the help. This has been a huge problem for me. I have a Center Force clutch and the spec is the throwout bearing needs to move 5/16 inch to Fully activate the clutch. Do you have a Center Force clutch? How much closer to the pivot point did you move the clutch adjustment rod? This is a great help thank you so much!

 
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Old Sep 28, 2024 | 12:48 PM
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lshort
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From: Newton Illinois
I also have a 390 and toploader, one problem with the toploader is that there is no place for the pivot on the transmission like the stock one, I will attach a picture of how I did mine, it has worked well for the last year and 10,000 miles
 
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Old Sep 28, 2024 | 03:31 PM
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55Pickup390
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From: Warwick, Rhode Island
I'm running a "Brute" heavy duty 11" lever style clutch. Measurement between the pivot point of the bracket and the adjusting rod connection is 2-1/4". I tried the connection point at 3" from the pivot point, but still had too much of a force requirement for my liking. Clutch pedal travel seems about right, 1/2 to 1" play at the top at full engagement and disengages fully between shifts.
 
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