Took my head off for rebuild, quick q.

[mirek]

And noticed that the cylinder walls are scratched in a crosshatching motion, does that mean the bottom end was rebuilt at one time? or do they come like this from factory?

[nando]

that's from the factory

if you can still see crosshatching, that's a good sign. but typically, BMW engines last a long time - the block in my car now had ~220,000 miles on it with the original cross hatching in place.

[mirek]

Dude thanks for the extremely quick reply! good to know, time to get my head rebuilt. timing belt snapped, 3 exhaust valves bent and 3 intakes bent, 1 broken rocker arm! :)

What do you recommend be done while the head is out, waterpump, timing belt and tensioner, all belts, and all gaskets?

[Sean]

Dude thanks for the extremely quick reply! good to know, time to get my head rebuilt. timing belt snapped, 3 exhaust valves bent and 3 intakes bent, 1 broken rocker arm! :)

What do you recommend be done while the head is out, waterpump, timing belt and tensioner, all belts, and all gaskets?

That's a given. I could say mods - but do all that for general maintenance.

[StereoInstaller1]

Sounds like you have a good grip on it to me.

Don't forget TB gaskets!