[Healeys] Clutch-related noise

[Bob Haskell]

What type of throw-out bearing does the Toyota 5 speed conversion have? 
  In Michael's original post, he said that he has a Toyota gearbox with 
a BJ8 diaphragm clutch.

Cheers,

Bob Haskell
AHCA 3000 MkI registrar
http://www.ciahc.org/registry_3000mk1.php

On 12/12/2016 12:14 AM, Brian Drab wrote:
> Kees, I assume by clutch bearing, you mean the clutch throw-out or
> release bearing. On a BJ8, these have a solid carbon contact surface and
> do not move other than in or out depending on the pedal motion. I
> literally just replaced that bearing on a BJ8. I do realize that there
> is much more expensive throw out bearing that does utilize ball or
> roller bearings but I have never actually seen one of these.
>
> I know of no way to increase the pedal travel on a BJ8. The pedal to
> master cylinder is non adjustable and the slave cylinder to clutch is
> also non adjustable.
>
> When I mentioned, in an earlier post, the input shaft bearing of the
> transmission - this shaft is at engine speed with the clutch released,
> and motionless when the clutch pedal is depressed, which allows one to
> select gears without grinding them. Road speed has no influence on the
> transmission input shaft. I had exactly this problem on a vehicle (not a
> Healey) and that was the problem and was solved by replacing that  bearing.
>
> I certainly don’t know if that is the problem in this case but, to me,
> it is the only logical thing that is moving at engine speed (not road
> speed)  with the clutch released and the only thing that would be
> motionless (relatively speaking) when the clutch pedal is depressed.
>
> Brian Drab
>
> *From:*Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of
> *Oudesluys
> *Sent:* December 11, 2016 1:28 AM
> *To:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Clutch-related noise
>
> The clutch pedal may have to little travel before engaging, leaving the
> clutch bearing spinning around with no or little load which can cause
> this kind of noise.
> Try increasing the pedal travel slightly.
> Kees Oudesluijs
>
>
>
> Op 10-12-2016 om 22:57 schreef Michael Oritt:
>
>     While driving today I noticed a new noise: A faint but constant whining/
>
>     purring sound that is present when the clutch pedal is NOT
>     depressed, whether in neutral or in gear and whether in motion or
>     sitting still.
>
>     When I depress the clutch pedal the sound goes away. Clutch and
>     transmission operation seem normal. BTW I have a Toyota five-speed
>     with a BJ8 diaphragm clutch.
>
>     Thoughts please?
>
>     Best--Michael Oritt
>
>
>
>
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