General engine overhaul procedures

[shogun]

http://bmw.ctcms.net/BMW/E-Books/Haynes%20Service%20Manual%20-%20E30%20-%20E28%20-%20E34/02B%20-%20Engine%20overhaul%20procedures.pdf

[Jehu]

I saw no mention specifically of the M60. I had been left with the impression the M60 would not be suitable for such refurbishing. Are you aware whether this is true or if I were inclined might it be possible to refresh the M60B40 in my 540 which is now consuiming a quart of 5w30 in under 1k mies? New rings, crank shaft and connecting rod bearings and valve seal/guides just where ever oil may now be passing.

[shogun]

when that repair book was printed, probably the M60 engine was not yet on the market. There is no reason that an M60 engine is not suitable for refursbishing.
Buy a Bentley Repair Manual, that covers it.
oil consumption has many reasons. First of all I would check the typical fault
see under engine OSV replacement = oil separator valve
http://www.e38.org/

[bubba966]

I saw no mention specifically of the M60. I had been left with the impression the M60 would not be suitable for such refurbishing. Are you aware whether this is true or if I were inclined might it be possible to refresh the M60B40 in my 540 which is now consuiming a quart of 5w30 in under 1k mies? New rings, crank shaft and connecting rod bearings and valve seal/guides just where ever oil may now be passing.

You can easily do new rings/seals/bearings/etc in an M60. What you can't easily do is bore out the cylinders. So if you have a nik block that has cylinder wall damage you'd need to install sleeves in the cylinders in order to fix that as you can't just overbore it and re-ring it to match the new bore.

[BigKriss]

Thanks Erich

When rebuilding an engine, I see it says "Use a centre-punch or numberstamping dies to mark the main bearing caps to ensure refitting in their original locations on the block".

Is this true? When I dismantled my old engine (bottom end), I did not mark anything. Will this matter if I ever want to re-assemble it?

[leicesterboy15]

How about this for the M60, page 2 has some good pics:

http://forums.bimmerforums.com/forum/showthread.php?t=1354664

And this one looks pretty good too:

http://forums.bimmerforums.com/forum/showthread.php?p=18483772

Doesn't cover the engine internals but seems like a good place to start.