[Healeys] Clutch-related noise

[Brian Drab]

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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