Cords wrote:
> I had unfortunate incident at a BMW dealership. Whilst sevicing My 1997
> 740 4.4 litre the technician accidently dropped the screw top of the
> spark plug into one bore. Needless to say on start up destroyed the
> head and scored the cylinder. The dealership now wants to machine the
> bore and put in a metal liner.
> Is this possible on a aluminium alusil engine?
> I would have thought the correct thing to do would be to replace the
> block or the entire engine!
>
> Any advice would be appreciated
> Cords
>

No. You can't resleeve an engine that does not have sleeves. The
Alusil or Nikasil engines are alloy blocks with a very thin coating in
the bores. Not sleeves.

They will find this was a very expensive mistake. New short block, new
head. Big bucks.

--
-Fred W