[Mgs] clutch/trans question

Mike Duvall mike at duvallvideo.com
Wed Jun 21 12:36:05 MDT 2017

On my clutch squealing question…  the clutch slave just pushed out on me.   I assume resistance from the clutch arm held the slave piston into the cylinder and this is further evidence the throwout bearing likely failed…  

On Jun 7, 2017, at 3:49 AM, PaulHunt73 <paulhunt73 at virginmedia.com> wrote:

> Agree, my roller bearing recently collapsed, but it can happen with carbon as well as that failed in a similar way previously.  The problem is that the release arm is rarely concentric with the first-motion shaft on the MGB (at least), so pressure on the bearing and cover-plate is not equal all round, which causes rapid wear one side.  Knackered bearing and offset here http://www.mgbimages.uk.gridhosted.co.uk/images/clutchr305.jpg, with cover-plate damage here http://www.mgbimages.uk.gridhosted.co.uk/images/clutchr304.jpg.  I suspect mine was particularly bad, and I had to machine the pivot bolt hole one side and put a spacer on the other to bring it closer into line.  For that reason roller-bearings aren't the be-all and end-all for the MGB.  You may be lucky and have better alignment, maybe not.  Modern cars, the factory V8 and 1500 Midgets do have them as standard, but there is a guide tube round the shaft which keeps the bearing concentric.
> PaulH.
> ----- Original Message ----- 
>> > My 65B has started squealing when I push the clutch to the floor and
>> it is definitely coming from the rear of the engine.
>> The top of my list of suspects would be the throw out bearing. Especially if it is a roller bearing.

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