It's the cast hole for..... call it equalizing.... pressures, liquids,
fingers etc. One side is smooth because the face is machined after the
block is cast.
Joe Lansing wrote:
> When I removed the
> timing gear and chain I found a hole that passes
> completely through the block, from the smooth machined
> side behind the chain to the inside. I've taken a picture available at
> Is this normal and functional, or do I have a flawed
> or damaged block?
> Joe Lansing
> 62 Sprite.