[Healeys] High clutch

[Michael Salter]

Hi Michael, I  would say that you are definitely on the right track.
If you are certain that there is no air in the system then my guess is that
you are struggling with " compressability " of the clutch disc.
They are designed that way to "soften " engagement.
A slightly larger diameter master or smaller diameter slave should resolve
the issue but remember that you are dealing with area here so the change in
displaced volume is the square of the diameter change.

M

On Mon., Aug. 14, 2023, 8:48 a.m. Michael Oritt, <michael.oritt at gmail.com>
wrote:

> My problem is just the opposite:  After having just replaced the clutch
> and pressure plate in my 100 the clutch does not *disengage* until almost
> the extreme of clutch travel:  i.e. when my foot is depressed to the
> floorboard.  Though my car's clutch was originally mechanical I long ago
> replaced it with hydraulics after installing a Smitty's Five Speed Toyota
> transmission conversion.  I have checked the linkage for wear and do not
> see the usual egging out of holes and the hydraulics seem okay.  Would
> changing the bore size of either or both cylinders be a fix?
>
> Best--Michael Oritt
>
> On Sun, Aug 13, 2023 at 10:35 PM Roger Grace <roggrace at telus.net> wrote:
>
>> Assuming that there is no significant wear at the linkages and hydraulic
>> issues, my understanding is that "clutches wear upwards"
>> So, maybe the plate is worn after 58 years. To my mind mileage is less
>> important than traffic and start/stop time driving.
>> Find a hill and note if it slips at the top of pedal movement.
>> rg
>>
>>
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>> On Sun, Aug 13, 2023 at 5:05 PM Michael Salter <michaelsalter at gmail.com>
>> wrote:
>>
>>> Thinking more about your clutch issue. Your description of symptoms has
>>> me confused.
>>> Am I correct in assuming that what you are experiencing is that the
>>> clutch starts to release (slip) after depressing the clutch pedal only a
>>> small distance this being 1 - 2 inches from its normal (undepressed)
>>> position?
>>>
>>> M
>>>
>>> On Sun., Aug. 13, 2023, 9:46 a.m. Don via Healeys, <
>>> healeys at autox.team.net> wrote:
>>>
>>>> My 65 BJ8 clutch catches after I depress the pedal about 1 to 2 inches
>>>> from the rest position . I’ve replaced the clutch master cylinder and the
>>>> slave cylinder. And I’ve bled the system . There’s. No slipping of the
>>>> clutch . Car has 60,000 on it with I’m sure the original clutch. Is there
>>>> any way to make it catch more mid way when I depress the pedal?  I know
>>>> there are no threaded rods on either the pedal box or at the transmission
>>>> end . Maybe a different length rod coming out of the slave cylinder?
>>>>        Thanks , Don
>>>>
>>>> Sent from my iPhone
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