R56 Engine replaced; now destroys drive shafts!
My son's R56 Cooper S recently had a rebuilt engine dropped in to replace the original which was "broken".
Within an hour or so after collecting the car from the garage, the outer CV joint on the front left drive shaft fell to bits.
A new drive shaft was installed and all seemed fine. Until he had driven the car for about 5 miles. The brand new drive shaft went bad, just like the original.
It seems the drive shaft may have too much slack, allowing the CV joint to part when cornering, tearing up the rubber boot that covers the joint and allowing the bearings to thrash around.
Looking at the engine mounts from above, there is a mount on the left side of the car that can be easily seen. The mounting bolt on that side comes up through a slot in the mount, allowing for sideways movement of the engine in the mount.
The bolt has been installed and tightened with the engine apparently all the way over to the right side of the car, ie the mounting bolt is hard up against one end of the slot in the mount.
It looks very much as if the engine has been mounted way over to the right side of the car which means the transmission is too far away from the wheel and the drive shaft is effectively too short.
Is there a correct way to align the engine left to right? Does the engine have to come to bits to properly align the engine so the engine is centred properly between drive shafts, or is it correct to slacken that one slotted engine mount and lever the engine into the correct alignment before tightening again?