The Natural Philosopher wrote:

On Tue, 22 Nov 2005 15:32:23 +0000 (GMT), Dave Plowman (News) wrote:

In article ,
Chris Bacon wrote:
And some engines use particular materials or surface processes that
make rebores and regrinds effectively impossible (even if you could
get the appropriately sized bearings and pistons)

What? Nikasil? When was that invented, WWII? The '60s?

Think I first heard of it in the early '70s on a motorbike engine.

Incidentally, I've got a Nikasil block BMW. It's fine. ;-)

Plated bores. Some engines use plated bores.

Series 1 Landrover ones had chromed bores - to start with.
The manuals state that when reboring the first cut must be deep enough to
remove this.

Edgar



I always prefreed drop in steel liners in an al block...

Most Al. engines use those IIRC and I am not sure they are rebore-able
either.