Quote:
But to snap two in a very short time.... Something else is wrong.
Points that come to mind:
Has the correct gasket been used between engine and box if they have been apart at any time, FWDs use a thin paper gasket. If you use the Herald / Spitfire cork gasket then that's too thick, it will affect the alignment of the input shaft.
Is there excessive crank end float? Common fault on these engines, again if it's shunting about it will stress the shaft.
Is the pilot bearing ok, in place and not worn?
Is the nylon thrust pad in place at the rear of the shaft?
Are the rubber driveshaft couplings in good condition, if they are worn out you can get excessive vibration through the box.
Could you possibly be being excessively rough with it? They are known to be weak, full throttle driving and rough clutch control could snap it..
Matt.
All of the above has been checked and a professional opinion says it's fine, hence my concern.
Could copaslip and a S/H unit have been the culprit?
No excessively rough driving or riding of the clutch. It was a pretty sedate drive out, as are most of the drives in that one! Save the fast driving for the other cars.