engine and drivetrain Head Alignment Dowels (Pins) install

[sirius815]

Is there any guidance on how to install/remove the head alignment dowels (pins) in the blocks? Do I need to heat up the block first to expand it? This may be a stupid question...

[wegweiser]

I'll gently squish / deform them (using a punch / small chisel) - making sure not to scar the block surface, til they come out. I replace with new ones, gently tapped in to place w a brass mallet or punch. They're available from BMW still.

[jgerock]

I learned this tip from another BMW friend while wrenching on an M20...

Insert something like an allen wrench or socket then use a set of Vise Grips to twist the dowel pin out.

[sirius815]

Got it, thanks!