I’m new to the HAMB so I figured I’d give this a shot. I have a 1950 Ford F1 pickup with the 4 speed non synchro trans. It shifts just fine, however, there is a high pitched sound when I let off the throttle in 3rd and 4th. It’s very faint but it’s definitely there. When I press the clutch in the noise goes away. When I let the clutch back out, the noise returns. Any thoughts or advice would be greatly appreciated!
How does the sound behave when you leave the clutch engaged, but let off the throttle? The reason I ask is that it's typical of noises in the rear end ring and pinion gear to change pitch when you change the load on it, while the different power paths through the transmission itself in 3rd and 4th make sounds coming from the transmission be different in those two gears.
I’m sorry, I should have been more descriptive. The noise stays when I leave the clutch engaged and let off the throttle. When I disengage the clutch the noise goes away. I love the gear whine that this old truck has but this new noise is different.
I would say the input shaft bearing may be taking a dump, but that noise would be happening all of the time not just in 3-4 gear.
Would a clutch adjustment help anything? It only has about 1/2” travel in the pedal before it will disengage.
I would be concerned that with that little bit of travel, that the clutch is not fully engaging when the pedal is released. Does the clutch slip under full load (3rd and 4th gear predominately)? The noise could be the throw-out bearing squealing while being under under some load since it is still engaged with the clutch fingers.
The truck does feel that it’s slipping in third when accelerating. Not so much 4th gear though. I will adjust it and see if the noise subsides.
Does it make any noise at all idling in neutral? Usually a thowout bearing will squeal idling in neutral, and go away when you put your foot on the clutch.
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